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If everyone accepts what you are doing, then you are a follower. If you are on a worthy and interesting new path through life, expect resistance!
Outside of Merzouga, Morocco.
I wanted to spend a night in the desert. Between the fabled red Moroccan dunes.
It was not what I wanted as the location was not far enough from the world (only just about 1 km far from the tarmac).
These images are at the beginning of the dunes and yet they offer something so special when the sun sets.
Really wasn't expecting to see this in Dover today!, and this vehicle had brought School Groups to Dover Castle which is now open again daily except Mondays, however these are not the best shots as their groups were about to board them.
And be sure to check by my other acount: www.flickr.com/photos_user.gne?path=&nsid=77145939%40..., to see what else I saw Very Recently!!
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Mr. Muscle - You probably expected to see this guy (Bandit) again considering that things are kind of slow. I'd have one of his sister also but she won't slow down enough to let me take a picture :-)
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based on authentic facts. BEWARE!
Some background:
In Autumn 1946, the Saab company began internal studies aimed at developing a replacement aircraft for the Saab B 18/S 18 as Sweden's standard attack aircraft. In 1948, Saab was formally approached by the Swedish Government with a request to investigate the development of a turbojet-powered strike aircraft to replace a series of 1940s vintage attack, reconnaissance, and night-fighter aircraft then in the Flygvapnet’s inventory. On 20 December 1948, a phase one contract for the design and mock-up of the proposed aircraft was issued. The requirements laid out by the Swedish Air Force were demanding: the aircraft had to be able to attack anywhere along Sweden's 2,000 km (1,245 miles) of coastline within one hour of launch from a central location, and it had to be capable of being launched in any weather conditions, at day or night.
In response, Saab elected to develop a twin-seat aircraft with a low-mounted swept wing and equipped with advanced electronics. On 3 November 1952, the first prototype, under the handle “Fpl 32” (flygplan = aircraft) conducted its first flight. A small batch of prototypes completed design and evaluation trials with series production of the newly designated Saab 32 Lansen beginning in 1953. The first production A 32A Lansen attack aircraft were delivered to the Swedish Air Force and proceeded through to mid-1958, at which point manufacturing activity switched to the Lansen’s other two major scheduled variants, the J 32B all-weather fighter and the photo reconnaissance S 32C, optimized for maritime operations.
The idea behind the J 32 originated from the late 1940s: Even before the SAAB 29 Tunnan had taken to the air, discussions began between SAAB and the Swedish Aviation Administration regarding a future night fighter aircraft with a jet engine. Since the end of the war, the Swedish Air Force had wanted a night fighter aircraft but was forced to put these on the shelf due to cost reasons. In the end, they managed to obtain sixty de Haviland Mosquito night fighter aircraft (then designated J 30) from Great Britain as a low-budget solution, but the J 30 was far from modern at the end of the 1940s and talks with SAAB regarding a domestic alternative continued.
At the beginning of the 1950s, the Fpl 32 project was in full swing and the aircraft was selected as the basis for an indigenous all-weather jet night fighter with a sighting radar and various heavier weapons to be able to shoot down bombers – at the time of the J 32B’s design, the main bomber threat was expected to enter Swedish airspace at subsonic speed and at high altitude. The original idea was that this aircraft would replace the J 30 Mosquito from 1955 onwards, but this proved to be impossible as the J 30 fleet needed to be replaced long before this and the A 32A as initial/main varia of the Fpl 32 had priority. Because of this operational gap, in January 1951 the Swedish Air Force ordered the British de Haviland Venom (then designated J 33) as an interim all-weather fighter and plans for the J 32B were postponed until later with the idea that the Lansen’s fighter variant would replace the J 33 at the end of the 1950s and benefit from technological progress until then.
On 7 January 1957, the first J 32B conducted its maiden flight, and it was a considerable step forward from the A 32A attack aircraft – in fact, excepts for the hull, it had only little in common with the attack variant! The new fighter version was powered by a Rolls-Royce Avon Mk 47A (locally designated RM6A) which gave as much thrust without an afterburner as the SAAB A 32A's original RM5A2 did with an afterburner, greatly improving the aircraft’s rate of climb and acceleration, even though the J 32B remained only transonic.
The armament consisted of four heavier fixed 30 mm ADEN m/55 automatic cannon in a slightly re-contoured nose, plus Rb 24/AIM-9B Sidewinder IR-guided AAMs and various unguided rockets against air and ground targets. Instead of the A 32A’s Ericsson mapping and navigation radar, which was compatible with the indigenous Rb 04C anti-ship missile, one of the earliest cruise missiles in western service, the J 32B carried a PS-42/A. This was a search/tracking X-band radar with a gyro-stabilized antenna with a swivel range of 60° to each side and +60°/−30° up/down. The radar featured the option of a 3D display for both WSO and pilot and its data could be directly displayed in the pilot’s Sikte 6A HUD, a very modern solution at the time.
A total of 118 aircraft (S/N 32501-32620) were produced between 1958 and 1960, serving in four fighter units. However, the J 32B only served for just under 12 years as a fighter aircraft in the Swedish Air Force: aviation technology progressed very quickly during the 1960s and already in 1966, the J 32B began to be replaced by the J 35F, which itself was already an advanced all-weather interceptor version of the supersonic Draken. In 1969 only the Jämtland's Air Flotilla (F4) still had the J 32B left in service and the type began to be completely retired from frontline service. In 1970 the plane flew in service for the last time and in 1973 the J 32B was officially phased out of the air force, and scrapping began in 1974.
However, the J 32Bs’ career was not over yet: At the beginning of the 1970s, Målflygdivisionen (MFD for short, the “Target Air Division”) was still using old J 29Fs as target tugs and for other training purposes, and they needed to be replaced. The choice fell on the much more capable, robust and readily available J 32B. Twenty-four machines were transferred to the MFD in 1971 to be used for training purposes, losing their radar and cannon armament. Six of these six J 32Bs were in 1972 modified into dedicated target tugs under the designation J 32D, six more J 32Bs were left unmodified and allocated to various second-line tasks such as radio testing and ground training.
The other twelve J 32Bs (s/n 32507, -510, -512, -515, -529, -541, -543, -569, -571, -592, -607 and -612) became jamming aircraft through the implementation of ECR equipment under the designation J 32E. This electronics package included internally:
- An INGEBORG signal reconnaissance receiver with antennae in the radome,
covering S, C and L radar frequency bands
- A G24 jamming transmitter, also with its antenna in the radome, covering alternatively
S, C and L frequency bands. This device co-operated with the external ADRIAN jamming pod
- Apparatus 91B; a broadband jammer, later integrated with INGEBORG
- MORE, a jammer and search station for the VHF and UHF bands
- FB-6 tape player/recorder; used, among other things, to send false messages/interference
Additional, external equipment included:
- PETRUS: jamming pod, X-band, also radar warning, intended for jamming aircraft
and active missile radars
- ADRIAN: jamming pod, active on S- and C-band, intended for jamming land-based and
shipboard radars
- BOZ-1, -3, -9 and -100 chaff dispenser pods
Outwardly, the J 32E differed from its brethren only through some blade antennae around the hull, and they initially retained the fighters’ blue-green paint scheme and their tactical markings so that they were hard to distinguish from the original fighters. Over time, orange day-glow markings were added to improve visibility during training sessions. However, during the mid-Nineties, three machines received during scheduled overhauls a new all-grey low-visibility camouflage with toned-down markings, and they received the “16M” unit identifier – the only MFD aircraft to carry these openly.
When a J 32E crashed in 1975, three of the remaining six training J 32Bs were modified into J 32Es in 1979 to fill the ranks. The MFD kept operating the small J 32Ds and Es fleet well into the Nineties and the special unit survived two flotilla and four defense engagements. At that time, the Målflygdivisionen was part of the Swedish Air Force’s Upplands Flygflottilj (F16), but it was based at Malmen air base near Linköpping (where the Swedish Air Force’s Försökscentralen was located, too) as a detachment unit and therefore the machines received the unit identifier “F16M”, even though the “M” suffix did normally not appear on the aircraft. However, through a defense ministry decision in 1996 the Target Air Division and its associated companies as well as the aircraft workshop at Malmen were to be decommissioned, what meant the end of the whole unit. On June 26, 1997, a ceremony was held over the disbandment of the division, where, among other things, twelve J 32Es made a formation flight over Östergötland.
After the decommissioning of the division, however, the Lansens were still not ‘dead’ yet: the J 32D target tugs were kept operational by a private operator and received civil registrations, and eight flightworthy J 32Es were passed over to FMV:Prov (Provningsavdelningen vid Försvarets materielverk, the material testing department of the Swedish Air Force’s Försökscentralen) to serve on, while other airframes without any more future potential were handed over to museums as exhibition pieces, or eventually scrapped. The surviving J 32Es served on in the electronic aggressor/trainer role until 1999 when they were finally replaced by ten modified Sk 37E Viggen two-seaters, after their development and conversion had taken longer than expected.
However, this was still not the end of the Saab 32, which turned out to be even more long-lived: By 2010, at least two Lansens were still operational, having the sole task of taking high altitude air samples for research purposes in collaboration with the Swedish Radiation Safety Authority, and by 2012 a total of three Lansens reportedly remained in active service in Sweden.
General characteristics:
Crew: 2
Length: 14.94 m (49 ft 0 in)
Wingspan: 13 m (42 ft 8 in)
Height: 4.65 m (15 ft 3 in)
Wing area: 37.4 m² (403 sq ft)
Airfoil: NACA 64A010
Empty weight: 7,500 kg (16,535 lb)
Max takeoff weight: 13,500 kg (29,762 lb)
Powerplant:
1× Svenska Flygmotor RM6A afterburning turbojet
(a Rolls Royce Avon Mk.47A outfitted with an indigenous afterburner),
delivering 4,88 kp dry and 6,500 kp with reheat
Performance:
Maximum speed: 1,200 km/h (750 mph, 650 kn)
Range: 2,000 km (1,200 mi, 1,100 nmi) with internal fuel only
Service ceiling: 15,000 m (49,000 ft)
Rate of climb: 100 m/s (20,000 ft/min)
Armament:
No internal weapons.
13× external hardpoints (five major pylons and eight more for light weapons)
for a wide variety of up to 3.000 kg of ordnance, typically only used
for ECM and chaff/flare dispenser pods and/or a conformal ventral auxiliary tank
The kit and its assembly:
This is a what-if project that I had on my idea list for a long time, but never got the nerve to do it because it is just a mild modification – the model depicts a real aircraft type, just with a fictional livery for it (see below).
The plan to create a J 32E from Heller’s A 32 kit from 1982 predated any OOB option, though. Tarangus has been offering a dedicated J 32B/E kit since 2016, but I stuck to my original plan to convert a Heller fighter bomber which I had in The Stash™, anyway)- also because I find the Tarangus kit prohibitively expensive (for what you get), even though it might have saved some work.
The Heller A 32A kit was basically built OOB, even though changing it into a J 32B (and even further into an “E”) called for some major modifications. These could have been scratched, but out of convenience I invested into a dedicated Maestro Models conversion set that offers resin replacements for a modified gun bay (which has more pronounced “cheek fairings” than the attack aircraft, the lower section is similar to the S 32C camera nose), a new jet exhaust and also the Lansen’s unique conformal belly tank – for the cost of a NIB Heller Saab 32 kit alone, though… :-/
Implanting the Maestro Models parts was straightforward and relatively easy. The J 32B gun bay replaces the OOB parts from the Heller kit, fits well and does not require more PSR than the original part. Since the model depicts a gun-less J 32E, I faired the gun ports over.
The RM6A exhaust was a bit more challenging – it is a bit longer and wider than the A 32A’s RM5. It’s not much, maybe 1mm in each dimension, so that the tail opening had to be widened and slightly re-contoured to accept the new one-piece resin pipe. The belly tank matched the kit’s ventral contours well. As an extra, the Maestro Models set also offers the J 32B’s different tail skid, which is placed further back on the fighter than on the attack and recce aircraft.
The J 32E’s characteristic collection of sizable blade antennae all around the hull was scratched from 0.5 mm styrene sheet. Furthermore, the flaps were lowered, an emergency fuel outlet was added under the tail, the canopy (very clear, but quite thick!) cut into two parts for optional open display, and the air intake walls were extended inside of the fuselage with styrene sheet.
Under the wings, four pylons (the Heller kit unfortunately comes totally devoid of any ordnance or even hardpoints!) from the spares box were added that carry scratched BOZ-1 chaff dispensers and a pair of ADRIAN/PETRUS ECM pod dummies – all made from drop tanks, incidentally from Swedish aircraft (Mistercraft Saab 35 and Matchbox Saab 29). Sure, there are short-run aftermarket sets for this special equipment that might come closer to the real thing(s), but I do not think that the (quite considerable) investments in all these exotic aftermarket items are worthwhile when most of them are pretty easy to scratch.
Painting and markings:
The paint scheme was the actual reason to build a J 32E: the fundamental plan was to build a Lansen in the Swedish air superiority low-viz two-tone paint scheme from the Nineties, and the IMHO only sensible option beyond pure fantasy was the real J 32E as “canvas”. I used JAS 39 Gripens as reference: their upper tone is called Pansargrå 5431-17M (“Tank Grey”, which is, according to trustworthy sources, very close to FS 36173, U.S. Neutral Grey), while the undersides are painted in Duvagrå 5431-14M (“Dove Grey”; approximately FS 36373, a tone called “High Low Visibility Light Grey”). Surprisingly, other Swedish types in low-viz livery used different shades; the JA 37s and late J 35Js were painted in tones called mörkgrå 033M and grå 032M, even though AJSF 37s and AFAIK a single SK 37 were painted with the Gripen colors, too.
After checking a lot of Gripen pictures I selected different tones, though, because the greys appear much lighter in real life, esp. on the lower surfaces. I ended up with FS 36231 (Dark Gull Grey, Humbrol 140, a bit lighter than the Neutral Grey) and RLM 63 (Lichtgrau, Testors 2077, a very pale and cold tone). The aircraft received a low waterline with a blurry edge, and the light grey was raised at the nose up to the radome, as seen on JA 37s and JAS 39s. To make the low-viz Lansen look a little less uniform I painted the lower rear section of the fuselage in Revell 91 and 99, simulating bare metal – a measure that had been done with many Lansens because leaking fuel and oil from the engine bay would wash off any paint in this area, leaving a rather tatty look. Di-electric fairings like the nose radome and the fin tip were painted with a brownish light grey (Revell 75) instead of black, reducing contrast and simulating bare and worn fiber glass. Small details like the white tips of the small wing fences and the underwing pylons were adapted from real-world Lansens.
After a light black ink wash, I emphasized single panels with Humbrol 125 and 165 on the upper surfaces and 147 and 196 underneath. Additionally, grinded graphite was used for weathering and a grimy look – an effective method, thanks to the kit’s fine raised panel lines. The silver wing leading edges were created with decal sheet material and not painted, a clean and convenient solution that avoids masking mess.
The ECM and chaff dispenser pods were painted in a slightly different shade of grey (FS 36440, Humbrol 40). As a subtle contrast the conformal belly tank was painted with Humbrol 247 (RLM 76), a tone that comes close to the Lansens’ standard camouflage from the Sixties’ green/blue livery, with a darker front end (Humbrol 145) and a bare metal tail section.
The cockpit interior was, according to pictures of real aircraft, painted in a greenish grey; I used Revell 67 (RAL 7009, Grüngrau) for most surfaces and slightly darker Humbrol 163 for dashboards and instrument panels. The landing gear wells as well as the flaps’ interior became Aluminum Bronze (Humbrol 56), while the landing gear struts were painted in a bluish dark green (Humbrol 195) with olive drab (Revell 46) wheel hubs - a detail seen on some real-life Saab 32s and a nice contrast to the light grey all around.
All markings/decals came from RBD Studio/Moose Republic aftermarket sheets for Saab 32 and 37. From the latter the low-viz national markings and the day-glo orange tactical codes were taken, while most stencils came from the Lansen sheet. Unfortunately, the Heller kit’s OOB sheet is pretty minimalistic – but the real A/S 32s did not carry many markings, anyway. Finally, the kit was sealed with matt acrylic varnish. As a confusing detail I gave the aircraft an explicit “16M” unit identifier, created with single black 4 mm letters/numbers. As a stark contrast and a modern peace-time element I also gave the Lansen the typical huge day-glo orange tactical codes on the upper wings that were carried by the Swedish interceptors of the time.
A relatively simple build, thanks to the resin conversion set – otherwise, creating a more or less believable J 32E from Heller’s A 32 kit is a tough challenge. Though expensive, the parts fit and work well, and I’d recommend the set, because the shape of the J 32B’s lower nose is quite complex and scratching the bigger jet pipe needs a proper basis. The modern low-viz livery suits the vintage yet elegant Lansen well, even though it reveals the aircraft’s bulk and size; in all-grey, the Lansen has something shark- or even whale-ish to it? The aircraft/livery combo looks pretty exotic, but not uncredible - like a proven war horse.
Expecting and nursing mothers require social protection but workers in the informal economy are often not covered. Maternity protection has been a primary concern of the ILO since its creation in 1919. Workplace support for mothers who are breastfeeding has been a basic provision of maternity protection.
The Philippines expanded maternity leave benefits in 2019 to align with international labour standards. The ILO also promoted exclusive breastfeeding in the workplace to advance women’s rights to maternity protection and to improve nutrition security for Filipino children. Know more: www.ilo.org/manila/projects/WCMS_379090/lang--en/index.htm
Photo ©ILO / E. Tuyay
November 2011
Manila, Philippines
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivs 3.0 IGO License. To view a copy of this license, visit creativecommons.org/licenses/by-nc-nd/3.0/igo/deed.en_US.
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I have had a busy week, three previews and a full session on the blog! This is the last for now. Meet Kelly, Eric, and their baby to be. Oh yeah and that is Marco staring at Kelly. We had a beautiful evening this past week at Tinley Park's Centennial Park. The light was great and I cannot wait to sift through the photos. Check out the full preview below!
Also, probably be shooting around the city this evening and maybe catch a sunrise this weekend if anyone is interested!! Hit me up.
View the full preview here: Preview: Kelly + Eric {Expecting}!
Enjoy and don't forget to check out my website for Prints: Christopher|F Photography
My facebook fanpage: Christopher|F Photography fanpage
exciting! they're alive and - literally - kicking. due in july!
spannend! ze zijn - letterlijk - springlevend. uitgerekend in juli!
view large | atom xml | handcastle | no notes on my pictures please
Bit of an oldie - but I still like it. Thanks for looking!
If you're on facebook come and give me a "like" HERE
Who knows how much snow we can expect this time arond but there is plenty happening in the local bus scene around Stafford. I have heard that Julian Peddle has bought out the remaining shares in D&G and also acquired Arriva's Cannock Garage. One wonders if we will get a kind of Centre-West North West, or Midlands but Select which Peddle also is involved with will see some changes too. Rumours are swirling around about Stagecoach trying to win First Potteries now that they feel it must go. I think Stagecoach have been interested for a while but the price was too high. If all these changes do come to pass of the original big groups all we will see in Stafford is the Arriva service coming in from Telford and West Midlands from Wolverhampton the rest will be the 'Independents'.
View in Lightbox for better resolution.
Lighting Info:
600EX-RT on a shoot thru brolly at camera right @ 1/128
LED at right of couple @ 1/1
Triggered by ST-E3-RT
Fangruida/Enc:Special multi-purpose anti-radiation suit 50 million dollars
Aerospace Medical Emergency cabin 1.5 billion dollars
Multi-purpose intelligent life support system 10 billion dollars
Mars truck 300 million dollars
Aerospace / Water Planet synthesis 1.2 billion dollars
Cutting-edge aerospace technology transfer 50 million dollars of new rocket radiation material 10 billion dollars against drugs microgravity $ 2 billion contact: Fangda337svb125@gmail.com,banxin123 @ gmail.com, mdin.jshmith @ gmail.com technology entry fee / technical margin of 1 million dollars , signed on demand
Table of Contents
Fangruida: human landing on Mars 10 cutting-edge technology
[Fangruida- human landing on Mars 10 innovative and sophisticated technologies]
Aerospace Science and space science and technology major innovation of the most critical of sophisticated technology R & D project
-------------------------------------------------- -------------
Aerospace Science Space Science and Technology on behalf of the world's most cutting-edge leader in high technology, materials, mechatronics, information and communication, energy, biomedical, marine, aviation aerospace, microelectronics, computer, automation, intelligent biochips, use of nuclear energy, light mechanical and electrical integration, astrophysics, celestial chemistry, astrophysics and so a series of geological science and technology. Especially after the moon landing, the further development of mankind to Mars and other planets into the powerful offensive, the world's major powers eager to Daxian hand of God, increase investment, vigorously develop new sophisticated technology projects for space to space. Satellite, space station, the new spacecraft, the new space suits, the new radiation protection materials, intelligent materials, new manufacturing technology, communications technology, computer technology, detector technology, rover, rover technology, biomedical technology, and so one after another, is expected to greater breakthroughs and leaps. For example, rocket technology, spacecraft design, large power spacecraft, spacesuits design improvements, radiation multifunctional composite materials, life health care technology and space medicine, prevention against microgravity microgravity applicable drugs, tracking control technology, landing and return technology. Mars lander and returned safely to Earth as a top priority. Secondly, Mars, the Moon base and the use of transforming Mars, the Moon and other development will follow. Whether the former or the latter, are the modern aerospace science, space science basic research, applied basic research and applied research in the major cutting-edge technology. These major cutting-edge technology research and innovation, not only for human landing on Mars and the safe return of great significance, but for the entire space science, impact immeasurable universe sciences, earth sciences and human life. Here the most critical of the most important research projects of several sophisticated technology research and development as well as its core technology brief. Limit non-scientific techniques include non-technical limits of technology, the key lies in technology research and development of technology maturity, advanced technology, innovative, practical, reliable, practical application, business value and investment costs, and not simply like the idea mature technology achievements, difficult to put into things. This is the high-tech research and development, testing, prototype, test application testing, until the outcome of industrialization. Especially in aerospace technology, advanced, novelty, practicality, reliability, economy, maturity, commercial value and so on. For technical and research purely science fiction and the like may be irrelevant depth, but not as aerospace engineering and technology practice. Otherwise, Mars will become a dream fantasy, and even into settling crashed out of danger.
Regardless of the moon or Mars, many technical difficulties, especially a human landing on Mars and return safely to Earth, technical difficulties mainly in the following aspects. (Transformation of Mars and the Moon and other planets and detect other livable technology more complex and difficult, at this stage it is difficult to achieve and therefore not discussed in detail in this study). In fact, Mars will be the safe return of a full set of technology, space science, aerospace crucial scientific research development, its significance is not confined to Mars simply a return to scientific value, great commercial value, can not be measure.
1. Powered rocket, the spacecraft overall structural design not be too complex large, otherwise, the safety factor to reduce the risk of failure accidents. Fusion rocket engine main problem to be solved is the high-temperature materials and fuel ignition chamber (reaction chamber temperatures of up to tens of millions of supreme billion degrees), fissile class rocket engine whose essence is the miniaturization of nuclear reactors, and placed on the rocket. Nuclear rocket engine fuel as an energy source, with liquid hydrogen, liquid helium, liquid ammonia working fluid. Nuclear rocket engine mounted in the thrust chamber of the reactor, cooling nozzle, the working fluid delivery and control systems and other components. This engine due to nuclear radiation protection, exhaust pollution, reactor control and efficient heat exchanger design and other issues unresolved. Electrothermal rocket engine utilizing heat energy (resistance heating or electric arc heating) working medium (hydrogen, amines, hydrazine ), vaporized; nozzle expansion accelerated after discharged from the spout to generate thrust. Static rocket engine working fluid (mercury, cesium, hydrogen, etc.) from the tank enter the ionization chamber is formed thrust ionized into a plasma jet. Electric rocket engines with a high specific impulse (700-2500 sec), extremely long life (can be repeated thousands of times a starter, a total of up to thousands of hours of work). But the thrust of less than 100N. This engine is only available for spacecraft attitude control, station-keeping and the like. One nuclear - power rocket design is as follows: Firstly, the reactor heats water to make it into steam, and then the high-speed steam ejected, push the rocket. Nuclear rocket using hydrogen as working substance may be a better solution, it is one of the most commonly used liquid hydrogen rocket fuel rocket carrying liquid hydrogen virtually no technical difficulties. Heating hydrogen nuclear reactor, as long as it eventually reaches or exceeds current jet velocity hydrogen rocket engine jet speed, the same weight of the rocket will be able to work longer, it can accelerate the Rockets faster. Here there are only two problems: First, the final weight includes the weight of the rocket in nuclear reactors, so it must be as light as possible. Ultra-small nuclear reactor has been able to achieve. Furthermore, if used in outer space, we can not consider the problem of radioactive residues, simply to just one proton hydrogen nuclei are less likely to produce induced radioactivity, thus shielding layer can be made thinner, injected hydrogen gas can flow directly through the reactor core, it is not easy to solve, and that is how to get back at high speed heated gas is ejected.
Rocket engine with a nuclear fission reactor, based on the heating liquid hydrogen propellant, rather than igniting flammable propellant
High-speed heavy rocket is a major cutting-edge technology. After all, space flight and aircraft carriers, submarines, nuclear reactors differ greatly from the one hand, the use of traditional fuels, on the one hand can be nuclear reactor technology. From the control, for security reasons, the use of nuclear power rocket technology, safe and reliable overriding indicators. Nuclear atomic energy in line with the norms and rules of outer space. For the immature fetal abdominal hatchery technology, and resolutely reject use. This is the most significant development of nuclear-powered rocket principle.
Nuclear-powered spaceship for Use of nuclear power are three kinds:
The first method: no water or air space such media can not be used propeller must use jet approach. Reactor nuclear fission or fusion to produce a lot of heat, we will propellant (such as liquid hydrogen) injection, the rapid expansion of the propellant will be heated and then discharged from the engine speed tail thrust. This method is most readily available.
The second method: nuclear reactor will have a lot of fast-moving ions, these energetic particles moving very fast, so you can use a magnetic field to control their ejection direction. This principle ion rocket similar to the tail of the rocket ejected from the high-speed mobile ions, so that the recoil movement of a rocket. The advantage of this approach is to promote the unusually large ratio, without carrying any medium, continued strong. Ion engine, which is commonly referred to as "electric rocket", the principle is not complicated, the propellant is ionized particles,
Plasma Engine
Electromagnetic acceleration, high-speed spray. From the development trend, the US research scope covers almost all types of electric thrusters, but mainly to the development of ion engines, NASA in which to play the most active intake technology and preparedness plans. "
The third method: the use of nuclear explosions. It is a bold and crazy way, no longer is the use of a controlled nuclear reaction, but to use nuclear explosions to drive the ship, this is not an engine, and it is called a nuclear pulse rocket. This spacecraft will carry a lot of low-yield atomic bombs out one behind, and then detonated, followed by a spacecraft propulsion installation disk, absorbing the blast pushing the spacecraft forward. This was in 1955 to Orion (Project Orion) name of the project, originally planned to bring two thousand atomic bombs, Orion later fetal nuclear thermal rocket. Its principle is mounted on a small rocket reactor, the reactor utilizing thermal energy generated by the propellant is heated to a high temperature, high pressure and high temperature of the propellant from the high-speed spray nozzle, a tremendous impetus.
Common nuclear fission technologies, including nuclear pulse rocket engines, nuclear rockets, nuclear thermal rocket and nuclear stamping rockets to nuclear thermal rocket, for example, the size of its land-based nuclear power plant reactor structure than the much smaller, more uranium-235 purity requirements high, reaching more than 90%, at the request of the high specific impulse engine core temperature will reach about 3000K, require excellent high temperature properties of materials.
Research and test new IT technologies and new products and new technology and new materials, new equipment, things are difficult, design is the most important part, especially in the overall design, technical solutions, technical route, technical process, technical and economic particularly significant. The overall design is defective, technology there are loopholes in the program, will be a major technical route deviation, but also directly related to the success of research trials. so, any time, under any circumstances, a good grasp of the overall control of design, technical design, is essential. otherwise, a done deal, it is difficult save. aerospace technology research and product development is true.
3, high-performance nuclear rocket
Nuclear rocket nuclear fission and fusion energy can rocket rocket two categories. Nuclear fission and fusion produce heat, radiation and shock waves and other large amounts of energy, but here they are contemplated for use as a thermal energy rocket.
Uranium and other heavy elements, under certain conditions, will split their nuclei, called nuclear fission reaction. The atomic bomb is the result of nuclear fission reactions. Nuclear fission reaction to release energy, is a million times more chemical rocket propellant combustion energy. Therefore, nuclear fission energy is a high-performance rocket rockets. Since it requires much less propellant than chemical rockets can, so to its own weight is much lighter than chemical rockets energy. For the same quality of the rocket, the rocket payload of nuclear fission energy is much greater than the chemical energy of the rocket. Just nuclear fission energy rocket is still in the works.
Use of nuclear fission energy as the energy of the rocket, called the atomic rockets. It is to make hydrogen or other inert gas working fluid through the reactor, the hydrogen after the heating temperature quickly rose to 2000 ℃, and then into the nozzle, high-speed spray to produce thrust.
A vision plan is to use liquid hydrogen working fluid, in operation, the liquid hydrogen tank in the liquid hydrogen pump is withdrawn through the catheter and the engine cooling jacket and liquid hydrogen into hydrogen gas, hydrogen gas turbine-driven, locally expansion. Then by nuclear fission reactors, nuclear fission reactions absorb heat released, a sharp rise in temperature, and finally into the nozzle, the rapid expansion of high-speed spray. Calculations show that the amount of atomic payload rockets, rocket high chemical energy than 5-8 times.
Hydrogen and other light elements, under certain conditions, their nuclei convergent synthesis of new heavy nuclei, and release a lot of energy, called nuclear fusion reaction, also called thermonuclear reaction.
Using energy generated by the fusion reaction for energy rocket, called fusion energy rocket or nuclear thermal rockets. But it is also not only take advantage of controlled nuclear fusion reaction to manufacture hydrogen bombs, rockets and controlled nuclear fusion reaction needs still studying it.
Of course there are various research and development of rocket technology and technical solutions to try.
It is envisaged that the rocket deuterium, an isotope of hydrogen with deuterium nuclear fusion reaction of helium nuclei, protons and neutrons, and release huge amounts of energy, just polymerized ionized helium to temperatures up to 100 million degrees the plasma, and then nozzle expansion, high-speed ejection, the exhaust speed of up to 15,000 km / sec, atomic energy is 1800 times the rocket, the rocket is the chemical energy of 3700 times.
Nuclear rocket engine fuel as an energy source, with liquid hydrogen, liquid helium, liquid ammonia working fluid. Nuclear rocket engine mounted in the thrust chamber of the reactor, cooling nozzle, the working fluid delivery and control systems and other components. In a nuclear reactor, nuclear energy into heat to heat the working fluid, the working fluid is heated after expansion nozzle to accelerate to the speed of 6500 ~ 11,000 m / sec from the discharge orifice to produce thrust. Nuclear rocket engine specific impulse (250 to 1000 seconds) long life, but the technology is complex, apply only to long-term spacecraft. This engine due to nuclear radiation protection, exhaust pollution, reactor control and efficient heat exchanger design and other issues not resolved, is still in the midst of trials. Nuclear rocket technology is cutting-edge aerospace science technology, centralized many professional and technical sciences and aerospace, nuclear physics, nuclear chemistry, materials science, the long term future ___-- wide width. The United States, Russia and Europe, China, India, Japan, Britain, Brazil and other countries in this regard have studies, in particular the United States and Russia led the way, impressive. Of course, at this stage of nuclear rocket technology, technology development there are still many difficulties. Fully formed, still to be. But humanity marching to the universe, nuclear reactor applications is essential.
Outer Space Treaty (International Convention on the Peaceful Uses of Outer Space) ****
Use of Nuclear Power Sources in Outer Space Principle 15
General Assembly,
Having considered the report of its thirty-fifth session of the Committee on the Peaceful Uses of Outer Space and the Commission of 16 nuclear
It can be attached in principle on the use of nuclear power sources in outer space of the text of its report, 17
Recognize that nuclear power sources due to small size, long life and other characteristics, especially suitable for use even necessary
For some missions in outer space,
Recognizing also that the use of nuclear power sources in outer space should focus on the possible use of nuclear power sources
Those uses,
Recognizing also that the use of nuclear power sources should include or probabilistic risk analysis is complete security in outer space
Full evaluation is based, in particular, the public should focus on reducing accidental exposure to harmful radiation or radioactive material risk
risk,
Recognizing the need to a set of principles containing goals and guidelines in this regard to ensure the safety of outer space makes
With nuclear power sources,
Affirming that this set principles apply exclusively on space objects for non-power generation, which is generally characteristic
Mission systems and implementation of nuclear power sources in outer space on similar principles and used by,
Recognizing this need to refer to a new set of principles for future nuclear power applications and internationally for radiological protection
The new proposal will be revised
By the following principles on the use of nuclear power sources in outer space.
Principle 1. Applicability of international law
Involving the use of nuclear power sources in outer space activities should be carried out in accordance with international law, especially the "UN
Principles of the Charter "and" States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies Activities
Treaty "3
.
2. The principle terms
1. For the purpose of these principles, "launching State" and "launching State ......" two words mean, in related
Principles related to a time of nuclear power sources in space objects exercises jurisdiction and control of the country.
2. For the purpose of principle 9, wherein the definition of the term "launching State" as contained in that principle.
3. For the purposes of principle 3, the terms "foreseeable" and "all possible" two words are used to describe the actual hair
The overall likelihood of students that it is considered for safety analysis is credible possibilities for a class of things
Member or circumstances. "General concept of defense in depth" when the term applies to nuclear power sources in outer space refers to various settings
Count form and space operations replace or supplement the operation of the system in order to prevent system failures or mitigate thereafter
"Official Records of the General Assembly, Forty-seventh Session, Supplement No. 20" 16 (A / 47/20).
17 Ibid., Annex.
38
fruit. To achieve this purpose is not necessarily required for each individual member has redundant safety systems. Given space
Use and special requirements of various space missions, impossible to any particular set of systems or features can be specified as
Necessary to achieve this purpose. For the purpose of Principle 3 (d) of paragraph 2, "made critical" does not include
Including such as zero-power testing which are fundamental to ensuring system safety required.
Principle 3. Guidelines and criteria for safe use
To minimize the risk of radioactive material in space and the number involved, nuclear power sources in outer space
Use should be limited to non-nuclear power sources in space missions can not reasonably be performed
1. General goals for radiation protection and nuclear safety
(A) States launching space objects with nuclear power sources on board shall endeavor to protect individuals, populations and the biosphere
From radiation hazards. The design and use of space objects with nuclear power sources on board shall ensure that risk with confidence
Harm in the foreseeable operational or accidental circumstances, paragraph 1 (b) and (c) to define acceptable water
level.
Such design and use shall also ensure that radioactive material does not reliably significant contamination of outer space.
(B) the normal operation of nuclear power sources in space objects, including from paragraph 2 (b) as defined in foot
High enough to return to the track, shall be subject to appropriate anti-radiation recommended by the International Commission on Radiological Protection of the public
Protection goals. During such normal operation there shall be no significant radiation exposure;
(C) To limit exposure in accidents, the design and construction of nuclear power source systems shall take into account the international
Relevant and generally accepted radiological protection guidelines.
In addition to the probability of accidents with potentially serious radiological consequences is extremely low, the nuclear power source
Design systems shall be safely irradiated limited limited geographical area, for the individual radiation dose should be
Limited to no more than a year 1mSv primary dose limits. Allows the use of irradiation year for some years 5mSv deputy agent
Quantity limit, but the average over a lifetime effective dose equivalent annual dose not exceed the principal limit 1mSv
degree.
Should make these conditions occur with potentially serious radiological consequences of the probability of the system design is very
small.
Criteria mentioned in this paragraph Future modifications should be applied as soon as possible;
(D) general concept of defense in depth should be based on the design, construction and operation of systems important for safety. root
According to this concept, foreseeable safety-related failures or malfunctions must be capable of automatic action may be
Or procedures to correct or offset.
It should ensure that essential safety system reliability, inter alia, to make way for these systems
Component redundancy, physical separation, functional isolation and adequate independence.
It should also take other measures to increase the level of safety.
2. The nuclear reactor
(A) nuclear reactor can be used to:
39
(I) On interplanetary missions;
(Ii) the second high enough orbit paragraph (b) as defined;
(Iii) low-Earth orbit, with the proviso that after their mission is complete enough to be kept in a nuclear reactor
High on the track;
(B) sufficiently high orbit the orbital lifetime is long enough to make the decay of fission products to approximately actinides
Element active track. The sufficiently high orbit must be such that existing and future outer space missions of crisis
Risk and danger of collision with other space objects to a minimum. In determining the height of the sufficiently high orbit when
It should also take into account the destroyed reactor components before re-entering the Earth's atmosphere have to go through the required decay time
between.
(C) only 235 nuclear reactors with highly enriched uranium fuel. The design shall take into account the fission and
Activation of radioactive decay products.
(D) nuclear reactors have reached their operating orbit or interplanetary trajectory can not be made critical state
state.
(E) nuclear reactor design and construction shall ensure that, before reaching the operating orbit during all possible events
Can not become critical state, including rocket explosion, re-entry, impact on ground or water, submersion
In water or water intruding into the core.
(F) a significant reduction in satellites with nuclear reactors to operate on a lifetime less than in the sufficiently high orbit orbit
For the period (including during operation into the sufficiently high orbit) the possibility of failure, there should be a very
Reliable operating system, in order to ensure an effective and controlled disposal of the reactor.
3. Radioisotope generators
(A) interplanetary missions and other spacecraft out of Earth's gravitational field tasks using radioactive isotopes
Su generator. As they are stored after completion of their mission in high orbit, the Earth can also be used
track. We are required to make the final treatment under any circumstances.
(B) Radioisotope generators shall be protected closed systems, design and construction of the system should
Ensure that in the foreseeable conditions of the track to withstand the heat and aerodynamic forces of re-entry in the upper atmosphere, orbit
Conditions including highly elliptical or hyperbolic orbits when relevant. Upon impact, the containment system and the occurrence of parity
Physical morpheme shall ensure that no radioactive material is scattered into the environment so you can complete a recovery operation
Clear all radioactive impact area.
Principle 4. Safety Assessment
1. When launching State emission consistent with the principles defined in paragraphs 1, prior to the launch in applicable under the
Designed, constructed or manufactured the nuclear power sources, or will operate the space object person, or from whose territory or facility
Transmits the object will be to ensure a thorough and comprehensive safety assessment. This assessment shall cover
All relevant stages of space mission and shall deal with all systems involved, including the means of launching, the space level
Taiwan, nuclear power source and its equipment and the means of control and communication between ground and space.
2. This assessment shall respect the principle of 3 contained in the guidelines and criteria for safe use.
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3. The principle of States in the Exploration and Use, including the Moon and Other Celestial Bodies Outer Space Activities Article
Results of about 11, this safety assessment should be published prior to each transmit simultaneously to the extent feasible
Note by the approximate intended time of launch, and shall notify the Secretary-General of the United Nations, how to be issued
This safety assessment before the shot to get the results as soon as possible.
Principle 5. Notification of re-entry
1. Any State launching a space object with nuclear power sources in space objects that failed to produce discharge
When radioactive substances dangerous to return to the earth, it shall promptly notify the country concerned. Notice shall be in the following format:
(A) System parameters:
(I) Name of launching State, including which may be contacted in the event of an accident to Request
Information or assistance to obtain the relevant authorities address;
(Ii) International title;
(Iii) Date and territory or location of launch;
(Iv) the information needed to make the best prediction of orbit lifetime, trajectory and impact region;
(V) General function of spacecraft;
(B) information on the radiological risk of nuclear power source:
(I) the type of power source: radioisotopes / reactor;
(Ii) the fuel could fall into the ground and may be affected by the physical state of contaminated and / or activated components, the number of
The amount and general radiological characteristics. The term "fuel" refers to as a source of heat or power of nuclear material.
This information shall also be sent to the Secretary-General of the United Nations.
2. Once you know the failure, the launching State shall provide information on the compliance with the above format. Information should as far as possible
To be updated frequently, and in the dense layers of the Earth's atmosphere is expected to return to a time when close to the best increase
Frequency of new data, so that the international community understand the situation and will have sufficient time to plan for any deemed necessary
National contingency measures.
3. It should also be at the same frequency of the latest information available to the Secretary-General of the United Nations.
Principle 6. consultation
5 According to the national principles provide information shall, as far as reasonably practicable, other countries
Requirements to obtain further information or consultations promptly reply.
Principle 7. Assistance to States
1. Upon receipt of expected with nuclear power sources on space objects and their components will return through the Earth's atmosphere
After know that all countries possessing space monitoring and tracking facilities, in the spirit of international cooperation, as soon as possible to
The Secretary-General of the United Nations and the countries they may have made space objects carrying nuclear power sources
A fault related information, so that the States may be affected to assess the situation and take any
It is considered to be the necessary precautions.
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2. In carrying space objects with nuclear power sources back to the Earth's atmosphere after its components:
(A) launching State shall be requested by the affected countries to quickly provide the necessary assistance to eliminate actual
And possible effects, including nuclear power sources to assist in identifying locations hit the Earth's surface, to detect the re substance
Quality and recovery or cleanup activities.
(B) All countries with relevant technical capabilities other than the launching State, and with such technical capabilities
International organizations shall, where possible, in accordance with the requirements of the affected countries to provide the necessary co
help.
When according to the above (a) and subparagraph (b) to provide assistance, should take into account the special needs of developing countries.
Principle 8. Responsibility
In accordance with the States in the Exploration and Use of Outer Space, including the Moon and Other Celestial Bodies activities, including the principles of Article
About Article, States shall bear international responsibility for their use of nuclear power sources in outer space relates to the activities
Whether such activities are carried on by governmental agencies or non-governmental entities, and shall bear international responsibility to ensure that this
Such activities undertaken by the country in line with the principles of the Treaty and the recommendations contained therein. If it involves the use of nuclear power sources
Activities in outer space by an international organization, should be done by the international organizations and States to participate in the organization
Undertakes to comply with the principles of the Treaty and the recommendations contained in these responsibilities.
Principle 9. Liability and Compensation
1. In accordance with the principle of States in the Exploration and Use, including the Moon and Other Celestial Bodies Outer Space Activities Article
And the Convention on International Liability for Damage Caused by Space Objects covenant of Article 7
Provisions, which launches or on behalf of the State
Each State launching a space object and each State from which territory or facility a space object is launched
Kinds of space object or damage caused by components shall bear international liability. This fully applies to this
Kind of space object carrying a nuclear power source case. Two or more States jointly launch a space object,
Each launching State shall in accordance with the above Article of the Convention for any damages jointly and severally liable.
2. Such countries under the aforesaid Convention shall bear the damages shall be in accordance with international law and fair and reasonable
The principles set out in order to provide for damages to make a claim on behalf of its natural or juridical persons, national or
International organizations to restore to the state before the occurrence of the damage.
3. For the purposes of this principle, compensation should be made to include reimbursement of the duly substantiated expenses for search, recovery and clean
Cost management work, including the cost of providing assistance to third parties.
10. The principle of dispute settlement
Since the implementation of these principles will lead to any dispute in accordance with the provisions of the UN Charter, by negotiation or
Other established procedures to resolve the peaceful settlement of disputes.
Here quoted the important provisions of the United Nations concerning the use of outer space for peaceful nuclear research and international conventions, the main emphasis on the Peaceful Uses of provisions related constraints .2 the use of nuclear rockets in outer space nuclear studies, etc., can cause greater attention in nuclear power nuclear rocket ship nuclear research, manufacture, use and other aspects of the mandatory hard indicators. this scientists, engineering and technical experts are also important constraints and requirements. as IAEA supervision and management as very important.
2. radiation. Space radiation is one of the greatest threats to the safety of the astronauts, including X-rays, γ-rays, cosmic rays and high-speed solar particles. Better than aluminum protective effect of high polymer composite materials.
3. Air. Perhaps the oxygen needed to rely on oxidation-reduction reaction of hydrogen and ilmenite production of water, followed by water electrolysis to generate oxygen. Mars oxygen necessary for survival but also from the decomposition of water, electrolytically separating water molecules of oxygen and hydrogen, this oxygen equipment has been successfully used in the International Space Station. Oxygen is released into the air to sustain life, the hydrogen system into the water system.
4. The issue of food waste recycling. At present, the International Space Station on the use of dehumidifiers, sucked moisture in the air to be purified, and then changed back to drinkable water. The astronauts' urine and sweat recycling. 5. water. The spacecraft and the space station on purification system also makes urine and other liquids can be purified utilization. 6. microgravity. In microgravity or weightlessness long-term space travel, if protective measures shall not be treated, the astronauts will be muscle atrophy, bone softening health. 7. contact. 8. Insulation, 9 energy. Any space exploration are inseparable from the energy battery is a new super hybrid energy storage device, the asymmetric lead-acid batteries and supercapacitors in the same compound within the system - and the so-called inside, no additional separate electronic control unit, this is an optimal combination. The traditional lead-acid battery PbO2 monomer is a positive electrode plate and a negative electrode plate spongy Pb composition, not a super cell. : Silicon solar cells, multi-compound thin film solar cells, multi-layer polymer-modified electrode solar cells, nano-crystalline solar cells, batteries and super class. For example, the solar aircraft .10. To protect the health and life safety and security systems. Lysophosphatidic acid LPA is a growth factor-like lipid mediators, the researchers found that this substance can on apoptosis after radiation injury and animal cells was inhibited. Stable lysophosphatidic acid analogs having the hematopoietic system and gastrointestinal tract caused by acute radiation sickness protection, knockout experiments show that lysophosphatidic acid receptors is an important foundation for the protection of radiation injury. In addition to work under high pressure, the astronauts face a number of health threats, including motion sickness, bacterial infections, blindness space, as well as psychological problems, including toxic dust. In the weightless environment of space, the astronaut's body will be like in preadolescents, as the emergence of various changes.
Plantar molt
After the environment to adapt to zero gravity, the astronaut's body will be some strange changes. Weightlessness cause fluid flow around the main flow torso and head, causing the astronauts facial swelling and inflammation, such as nasal congestion. During long-term stay in space
Bone and muscle loss
Most people weightlessness caused by the impact may be known bone and muscle degeneration. In addition, the calcium bones become very fragile and prone to fracture, which is why some of the astronauts after landing need on a stretcher.
Space Blindness
Space Blindness refers astronaut decreased vision.
Solar storms and radiation is one of the biggest challenges facing the long-term space flight. Since losing the protection of Earth's magnetic field, astronauts suffer far more than normal levels of radiation. The cumulative amount of radiation exposure in low earth orbit them exceeded by workers close to nuclear reactors, thereby increasing the risk of cancer.
Prolonged space flight can cause a series of psychological problems, including depression or mood swings, vulnerability, anxiety and fear, as well as other sequelae. We are familiar with the biology of the Earth, the Earth biochemistry, biophysics, after all, the Earth is very different astrophysics, celestial chemistry, biophysics and astrophysics, biochemistry and other celestial bodies. Therefore, you must be familiar with and adapt to these differences and changes.
Osteoporosis and its complications ranked first in the space of disease risk.
Long-term health risks associated with flying Topics
The degree of influence long-term biological effects of radiation in human flight can withstand the radiation and the maximum limit of accumulated radiation on physiology, pathology and genetics.
Physiological effects of weightlessness including: long-term bone loss and a return flight after the maximum extent and severity of the continued deterioration of other pathological problems induced by the; maximum flexibility and severity of possible long-term Flight Center in vascular function.
Long-term risk of disease due to the high risk of flight stress, microbial variation, decreased immune function, leading to infections
Radiation hazards and protection
1) radiation medicine, biology and pathway effects Features
Radiation protection for interplanetary flight, since the lack of protective effect of Earth's magnetic field, and by the irradiation time is longer, the possibility of increased radiation hazard.
Analysis of space flight medical problems that may occur, loss of appetite topped the list, sleep disorders, fatigue and insomnia, in addition, space sickness, musculoskeletal system problems, eye problems, infections problems, skin problems and cardiovascular problems
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Development of diagnostic techniques in orbit, the development of the volume of power consumption, features a wide range of diagnostic techniques, such as applied research of ultrasound diagnostic techniques in the abdominal thoracic trauma, bone, ligament damage, dental / sinus infections and other complications and integrated;
Actively explore in orbit disposal of medical technology, weightlessness surgical methods, development of special surgical instruments, the role of narcotic drugs and the like.
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However, space technology itself is integrated with the use of the most advanced technology, its challenging technical reserves and periodic demanding
With the continuous development of science and technology, space agencies plan a manned landing on the moon and Mars, space exploration emergency medicine current concern.
Space sickness
In the weightless environment of space, in the weightless environment of space, surgery may be extremely difficult and risky.
Robot surgeons
Space disease in three days after entering the space started to ease, although individual astronauts might subsequently relapse. January 2015 NASA declared working on a fast, anti-nausea and nasal sprays. In addition, due to the zero-gravity environment, and anti-nausea drugs can only be administered by injection or transdermal patches manner.
Manned spaceflight in the 21st century is the era of interplanetary flight, aerospace medicine is closely watched era is the era of China's manned space flourish. Only the central issue, and grasp the opportunity to open up a new world of human survival and development.
Various emergency contingency measures in special circumstances. Invisible accident risk prevention. Enhancing drugs and other screening methods immunity aerospace medicine and tissue engineering a microgravity environment. Drug mixture of APS, ginseng polysaccharides, Ganoderma lucidum polysaccharides, polysaccharides and Lentinan, from other compounds. Drug development space syndrome drug, chemical structure modification will be an important part.
These issues are very sensitive, cutting-edge technology is a major difficulty landing on Mars. Countries in the world, especially the world's major space powers in the country strategies and technical research, the results of all kinds continue to emerge. United States, Russia, China, Europe, India, Japan and other countries is different. United States, Russia extraordinary strength. Many patented technology and health, and most belong to the top-secret technology. Especially in aerospace engineering and technological achievements is different from the general scientific literature, practical, commercial, industrial great, especially the performance of patents, know-how, technical drawings, engineering design and other aspects. Present Mars and return safely to Earth, the first manned, significance, everything is hard in the beginning, especially the first person to land on Mars This Mars for Human Sciences Research Mars, the moon, the earth, the solar system and the universe, life and other significant. Its far greater than the value of direct investments and business interests.
In addition, it is the development of new materials, suitable for deep space operations universe, life, and other detection, wider field.
Many aerospace materials, continuous research and development of materials are key areas of aerospace development, including material rocket, the spacecraft materials, the suit materials, radiation materials, materials and equipment, instruments, materials and so on biochemistry.
Temperature metal-based compound with a metal matrix composite body with a more primordial higher temperature strength, creep resistance, impact resistance, thermal fatigue and other excellent high temperature performance.
In B, C, SiC fiber reinforced Ti3Al, TiAl, Ni3Al intermetallic matrix composites, etc.
W Fiber Reinforced with nickel-based, iron-based alloys as well as SiC, TiB2, Si3N4 and BN particle reinforced metal matrix composites
High temperature service conditions require the development of ceramic and carbon-based composite materials, etc., not in this eleven Cheung said.
Fuel storage
In order to survive in space, people need many things: food, oxygen, shelter, and, perhaps most importantly, fuel. The initial quality Mars mission somewhere around 80 percent of the space launch humans will be propellant. The fuel amount of storage space is very difficult.
This difference in low Earth orbit cause liquid hydrogen and liquid oxygen - rocket fuel - vaporization.
Hydrogen is particularly likely to leak out, resulting in a loss of about 4% per month.
When you want to get people to Mars speed to minimize exposure to weightlessness and space radiation hazards
Mars
Landings on the Martian surface, they realized that they reached the limit. The rapid expansion of the thin Martian atmosphere can not be very large parachute, such as those that will need to be large enough to slow down, carry human spacecraft.
Therefore, the parachute strong mass ratio, high temperature resistance, Bing shot performance and other aspects of textile materials used have special requirements, in order to make a parachute can be used in rockets, missiles, Yu arrows spacecraft and other spacecraft recovery, it is necessary to improve the canopy heat resistance, a high melting point polymeric fiber fabric used, the metal fabric, ceramic fiber fabrics, and other devices.
Super rigid parachute to help slow the landing vehicle.
Spacecraft entered the Martian atmosphere at 24,000 km / h. Even after slowing parachute or inflatable, it will be very
Once we have the protection of the Earth magnetic field, the solar radiation will accumulate in the body, a huge explosion threw the spacecraft may potentially lethal doses of radiation astronauts.
In addition to radiation, the biggest challenge is manned trip to Mars microgravity, as previously described.
The moon is sterile. Mars is another case entirely.
With dust treatment measures.
Arid Martian environment to create a super-tiny dust particles flying around the Earth for billions of years.
Apollo moon dust encountered. Ultra-sharp and abrasive lunar dust was named something that can clog the basic functions of mechanical damage. High chloride salt, which can cause thyroid problems in people.
Mars geological structure and geological structure of the moon, water on Mars geology, geology of the Moon is very important, because he, like the Earth's geology is related to many important issues. Water, the first element of life, air, temperature, and complex geological formations are geological structure. Cosmic geology research methods, mainly through a variety of detection equipment equipped with a space probe, celestial observations of atmospheric composition, composition and distribution of temperature, pressure, wind speed, vertical structure, composition of the solar wind, the water, the surface topography and Zoning, topsoil the composition and characteristics of the component surface of the rock, type and distribution, stratigraphic sequence, structural system and the internal shell structure.
Mars internal situation only rely on its surface condition of large amounts of data and related information inferred. It is generally believed that the core radius of 1700 km of high-density material composition; outsourcing a layer of lava, it is denser than the Earth's mantle some; outermost layer is a thin crust. Compared to other terrestrial planets, the lower the density of Mars, which indicates that the Martian core of iron (magnesium and iron sulfide) with may contain more sulfur. Like Mercury and the Moon, Mars and lack active plate movement; there is no indication that the crust of Mars occurred can cause translational events like the Earth like so many of folded mountains. Since there is no lateral movement in the earth's crust under the giant hot zone relative to the ground in a stationary state. Slight stress coupled with the ground, resulting in Tharis bumps and huge volcano. For the geological structure of Mars is very important, which is why repeated explorations and studies of Martian geological reasons.
Earth's surface
Each detector component landing site soil analysis:
Element weight percent
Viking 1
Oxygen 40-45
Si 18-25
Iron 12-15
K 8
Calcium 3-5
Magnesium 3-6
S 2-5
Aluminum 2-5
Cesium 0.1-0.5
Core
Mars is about half the radius of the core radius, in addition to the primary iron further comprises 15 to 17% of the sulfur content of lighter elements is also twice the Earth, so the low melting point, so that the core portion of a liquid, such as outside the Earth nuclear.
Mantle
Nuclear outer coating silicate mantle.
Crust
The outermost layer of the crust.
Crustal thickness obtained, the original thickness of the low north 40 km south plateau 70 kilometers thick, an average of 50 kilometers, at least 80 km Tharsis plateau and the Antarctic Plateau, and in the impact basin is thin, as only about 10 kilometers Greece plains.
Canyon of Mars there are two categories: outflow channels (outflow channel) and tree valley (valley network). The former is very large, it can be 100 km wide, over 2000 km long, streamlined, mainly in the younger Northern Hemisphere, such as the plain around Tyre Chris Canyon and Canyon jam.
In addition, the volcanic activity sometimes lava formation lava channels (lava channel); crustal stress generated by fissures, faults, forming numerous parallel extending grooves (fossa), such as around the huge Tharsis volcanic plateau radially distributed numerous grooves, which can again lead to volcanic activity.
Presumably, Mars has an iron as the main component of the nucleus, and contains sulfur, magnesium and other light elements, the nuclear share of Mars, the Earth should be relatively small. The outer core is covered with a thick layer of magnesium-rich silicate mantle, the surface of rocky crust. The density of Earth-like planets Mars is the lowest, only 3.93g / cc.
Hierarchy
The crust
Lunar core
The average density of the Moon is 3.3464 g / cc, the solar system satellites second highest (after Aiou). However, there are few clues mean lunar core is small, only about 350 km radius or less [2]. The core of the moon is only about 20% the size of the moon, the moon's interior has a solid, iron-rich core diameter of about 240 kilometers (150 miles); in addition there is a liquid core, mainly composed of iron outer core, about 330 km in diameter (205 miles), and for the first time compared with the core of the Earth, considered as the earth's outer core, like sulfur and oxygen may have lighter elements [4].
Chemical elements on the lunar surface constituted in accordance with its abundance as follows: oxygen (O), silicon (Si), iron (Fe), magnesium (Mg), calcium (Ca), aluminum (Al), manganese (Mn), titanium ( Ti). The most abundant is oxygen, silicon and iron. The oxygen content is estimated to be 42% (by weight). Carbon (C) and nitrogen (N) only traces seem to exist only in trace amounts deposited in the solar wind brings.
Lunar Prospector from the measured neutron spectra, the hydrogen (H) mainly in the lunar poles [2].
Element content (%)
Oxygen 42%
Silicon 21%
Iron 13%
Calcium 8%
Aluminum 7%
Magnesium 6%
Other 3%
Lunar surface relative content of each element (% by weight)
Moon geological history is an important event in recent global magma ocean crystallization. The specific depth is not clear, but some studies have shown that at least a depth of about 500 kilometers or more.
Lunar landscape
Lunar landscape can be described as impact craters and ejecta, some volcanoes, hills, lava-filled depressions.
Regolith
TABLE bear the asteroid and comets billions of years of bombardment. Over time, the impact of these processes have already broken into fine-grained surface rock debris, called regolith. Young mare area, regolith thickness of about 2 meters, while the oldest dated land, regolith thickness of up to 20 meters. Through the analysis of lunar soil components, in particular the isotopic composition changes can determine the period of solar activity. Solar wind gases possible future lunar base is useful because oxygen, hydrogen (water), carbon and nitrogen is not only essential to life, but also may be useful for fuel production. Lunar soil constituents may also be as a future source of energy.
Here, repeatedly stressed that the geological structure and geological structure of celestial bodies, the Earth, Moon, Mars, or that this human existence and development of biological life forms is very important, especially in a series of data Martian geological structure geological structure is directly related to human landing Mars and the successful transformation of Mars or not. for example, water, liquid water, water, oxygen, synthesis, must not be taken lightly.
____________________________________________________________----
Mars landing 10 Technology
Aerospace Science and space science and technology major innovation of the most critical of sophisticated technology R & D project
[
"1" rocket propulsion technology ion fusion nuclear pulse propulsion rocket powered high-speed heavy rocket technology, space nuclear reactors spacecraft] brought big problems reflected in the nuclear reaction, nuclear radiation on spacecraft launch, control, brakes and other impact.
In particular, for the future of nuclear power spacecraft, the need to solve the nuclear reactor design, manufacture, control, cooling, radiation shielding, exhaust pollution, high thermoelectric conversion efficiency and a series of technical problems.
In particular, nuclear reactors produce radiation on astronauts' health will pose a great threat, which requires the spacecraft to be nuclear radiation shielding to ensure astronaut and ship the goods from radiation and heat from the reactor influence, but this will greatly increase the weight of the detector.
Space nuclear process applications, nuclear reaction decay is not a problem, but in a vacuum, ultra-low temperature environment, the nuclear reaction materials, energy transport materials have very high demands.
Space facing the reality of a nuclear reactor cooling cooling problems. To prevent problems with the reactor, "Washington" aircraft carrier to take four heavy protective measures for the radiation enclosed in the warship. These four measures are: the fuel itself, fuel storage pressure vessel, reactor shell and the hull. US Navy fuel all metal fuel, designed to take the impact resistance of the war, does not release fission product can withstand more than 50 times the gravity of the impact load; product of nuclear fission reactor fuel will never enter loop cooling water. The third layer of protection is specially designed and manufactured the reactor shell. The fourth layer is a very strong anti-impact combat ship, the reactor is arranged in the center of the ship, very safe. Engage in a reactor can only be loaded up to the aircraft, so as to drive the motor, and then drive the propeller. That is the core advantage of the heat generated by the heated gas flow, high temperature high pressure gas discharge backward, thereby generating thrust.
.
After installation AMPS1000 type nuclear power plant, a nuclear fuel assembly: He is a core member of the nuclear fuel chain reaction. Usually made into uranium dioxide, of which only a few percent uranium-235, and most of it is not directly involved in the nuclear fission of uranium 238. The uranium dioxide sintered into cylindrical pieces, into a stainless steel or a zirconium alloy do metal tubes called fuel rods or the original, then the number of fuel rods loaded metal cylinder in an orderly composition of the fuel assembly, and finally put a lot of vertical distribution of fuel assemblies in the reactor.
Nuclear reactor pressure vessel is a housing for containing nuclear fuel and reactor internals, for producing high-quality high-strength steel is made to withstand the pressure of dozens MPa. Import and export of the coolant in the pressure vessel.
The top of the pressure vessel closure, and can be used to accommodate the fixed control rod drive mechanism, pressure vessel head has a semi-circular, flat-topped.
Roof bolt: used to connect the locking pressure vessel head, so that the cylinder to form a completely sealed container.
Neutron Source: Plug in nuclear reactors can provide sufficient neutron, nuclear fuel ignition, to start to enhance the role of nuclear reactors and nuclear power. Neutron source generally composed of radium, polonium, beryllium, antimony production. Neutron source and neutron fission reactors are fast neutron, can not cause fission of uranium 235, in order to slow down, we need to moderator ---- full of pure water in a nuclear reactor. Aircraft carriers, submarines use nuclear reactor control has proven more successful.
Rod: has a strong ability to absorb neutrons, driven by the control rod drive mechanism, can move up and down in a nuclear reactor control rods within the nuclear fuel used to start, shut down the nuclear reactor, and maintain, regulate reactor power. Hafnium control rods in general, silver, indium, cadmium and other metals production.
Control rod drive mechanism: He is the executive body of nuclear reactors operating system and security protection systems, in strict accordance with requirements of the system or its operator control rod drives do move up and down in a nuclear reactor, nuclear reactor for power control. In a crisis situation, you also can quickly control rods fully inserted into the reactor in order to achieve the purpose of the emergency shutdown
Upper and lower support plate: used to secure the fuel assembly. High temperature and pressure inside the reactor is filled with pure water (so called pressurized water reactors), on the one hand he was passing through a nuclear reactor core, cooling the nuclear fuel, to act as a coolant, on the other hand it accumulates in the pressure vessel in play moderated neutrons role, acting as moderator.
Water quality monitoring sampling system:
Adding chemical system: under normal circumstances, for adding hydrazine, hydrogen, pH control agents to the primary coolant system, the main purpose is to remove and reduce coolant oxygen, high oxygen water suppression equipment wall corrosion (usually at a high temperature oxygen with hydrogen, especially at low temperatures during startup of a nuclear reactor with added hydrazine oxygen); when the nuclear reactor control rods stuck for some reason can not shutdown time by the the system can inject the nuclear reactor neutron absorber (such as boric acid solution), emergency shutdown, in order to ensure the safety of nuclear submarines.
Water system: a loop inside the water will be reduced at work, such as water sampling and analysis, equipment leaks, because the shutdown process cooling water and reduction of thermal expansion and contraction.
Equipment cooling water system:
Pressure safety systems: pressure reactor primary coolant system may change rapidly for some reason, the need for effective control. And in severe burn nuclear fuel rods, resulting in a core melt accident, it is necessary to promptly increase the pressure. Turn the regulator measures the electric, heating and cooling water. If necessary, also temporary startup booster pump.
Residual Heat Removal System: reactor scram may be due to an accident, such as when the primary coolant system of the steam generator heat exchanger tube is damaged, it must be urgently closed reactors.
Safety Injection System: The main components of this system is the high-pressure injection pump.
Radioactive waste treatment systems:
Decontamination Systems: for the removal of radioactive deposits equipment, valves, pipes and accessories, and other surfaces.
Europe, the United States and Russia and other countries related to aircraft carriers, submarines, icebreakers, nuclear-powered research aircraft, there are lots of achievements use of nuclear energy, it is worth analysis. However, nuclear reactor technology, rocket ships and the former are very different, therefore, requires special attention and innovative research. Must adopt a new new design techniques, otherwise, fall into the stereotype, it will avail, nothing even cause harm Aerospace.
[ "2" spacecraft structure]
[ "3"] radiation technology is the use of deep-sea sedimentation fabric fabrics deepwater technology development precipitated silver metal fibers or fiber lint and other materials and micronaire value between 4.1 to 4.3 fibers made from blends. For radiation protection field, it greatly enhances the effects of radiation and service life of clothing. Radiation resistant fiber) radiation resistant fiber - fiber polyimide polyimide fibers
60 years the United States has successfully developed polyimide fibers, it has highlighted the high temperature, radiation-resistant, fire-retardant properties.
[ "4" cosmic radiation resistant clothing design multifunctional anti-aging, wear underwear] ① comfort layer: astronauts can not wash clothes in a long flight, a lot of sebum, perspiration, etc. will contaminate underwear, so use soft, absorbent and breathable cotton knitwear making.
② warm layer: at ambient temperature range is not the case, warm layer to maintain a comfortable temperature environment. Choose warm and good thermal resistance large, soft, lightweight material, such as synthetic fibers, flakes, wool and silk and so on.
③ ventilation and cooling clothes clothes
Spacesuit
In astronaut body heat is too high, water-cooled ventilation clothing and clothing to a different way of heat. If the body heat production more than 350 kcal / h (ventilated clothes can not meet the cooling requirements, then that is cooled by a water-cooled suit. Ventilating clothing and water-cooled multi-use compression clothing, durable, flexible plastic tubing, such as polyvinyl chloride pipe or nylon film.
④ airtight limiting layer:
⑤ insulation: astronaut during extravehicular activities, from hot or cold insulation protection. It multilayer aluminized polyester film or a polyimide film and sandwiched between layers of nonwoven fabric to be made.
⑥ protective cover layer: the outermost layer of the suit is to require fire, heat and anti-space radiation on various factors (micrometeorites, cosmic rays, etc.) on the human body. Most of this layer with aluminized fabric.
New space suits using a special radiation shielding material, double design.
And also supporting spacesuit helmet, gloves, boots and so on.
[ "5" space - Aerospace biomedical technology, space, special use of rescue medication Space mental health care systems in space without damage restful sleep positions - drugs, simple space emergency medical system
]
[ "6" landing control technology, alternate control technology, high-performance multi-purpose landing deceleration device (parachute)]
[ "7" Mars truck, unitary Mars spacecraft solar energy battery super multi-legged (rounds) intelligent robot] multifunction remote sensing instruments on Mars, Mars and more intelligent giant telescope
[8 <> Mars warehouse activities, automatic Mars lander - Automatic start off cabin
]
[ "9" Mars - spacecraft docking control system, return to the system design]
Space flight secondary emergency life - support system
Spacecraft automatic, manual, semi-automatic operation control, remote control switch system
Automatic return spacecraft systems, backup design, the spacecraft automatic control operating system modular blocks of]
[10 lunar tracking control system
Martian dust storms, pollution prevention, anti-corrosion and other special conditions thereof
Electric light aircraft, Mars lander, Mars, living spaces, living spaces Mars, Mars entry capsule, compatible utilization technology, plant cultivation techniques, nutrition space - space soil]
Aerospace technology, space technology a lot, a lot of cutting-edge technology. Human landing on Mars technology bear the brunt. The main merge the human landing on Mars 10 cutting-edge technology, in fact, these 10 cutting-edge technology, covering a wide range, focused, and is the key to key technologies. They actually shows overall trends and technology Aerospace Science and Technology space technology. Human triumph Mars and safe return of 10 cutting-edge technology is bound to innovation. Moreover, in order to explore the human Venus, Jupiter satellites and the solar system, the Milky Way and other future development of science and laid the foundation guarantee. But also for the transformation of human to Mars, the Moon and other planets livable provides strong technical support. Aerospace Science and Technology which is a major support system.
Preparation of oxygen, water, synthesis, temperature, radiation, critical force confrontation. Regardless of the moon or Mars, survive three elements bear the brunt.
Chemical formula: H₂O
Formula: H-O-H (OH bond between two angle 104.5 °).
Molecular Weight: 18.016
Chemical Experiment: water electrolysis. Formula: 2H₂O = energized = 2H₂ ↑ + O₂ ↑ (decomposition)
Molecules: a hydrogen atom, an oxygen atom.
Ionization of water: the presence of pure water ionization equilibrium following: H₂O == == H⁺ + OH⁻ reversible or irreversible H₂O + H₂O = = H₃O⁺ + OH⁻.
NOTE: "H₃O⁺" hydronium ions, for simplicity, often abbreviated as H⁺, more accurate to say the H9O4⁺, the amount of hydrogen ion concentration in pure water material is 10⁻⁷mol / L.
Electrolysis of water:
Water at DC, decomposition to produce hydrogen and oxygen, this method is industrially prepared pure hydrogen and oxygen 2H₂O = 2H₂ ↑ + O₂ ↑.
. Hydration Reaction:
Water with an alkaline active metal oxides, as well as some of the most acidic oxide hydration reaction of unsaturated hydrocarbons.
Na₂O + H₂O = 2NaOH
CaO + H₂O = Ca (OH) ₂
SO₃ + H₂O = H₂SO₄
P₂O₅ + 3H₂O = 2H₃PO₄ molecular structure
CH₂ = CH₂ + H₂O ← → C₂H₅OH
6. The diameter of the order of magnitude of 10 water molecules negative power of ten, the water is generally believed that a diameter of 2 to 3 this organization. water
7. Water ionization:
In the water, almost no water molecules ionized to generate ions.
H₂O ← → H⁺ + OH⁻
Heating potassium chlorate or potassium permanganate preparation of oxygen
Pressurized at low temperatures, the air into a liquid, and then evaporated, since the boiling point of liquid nitrogen is -196 deg.] C, lower than the boiling point of liquid oxygen (-183 ℃), so the liquid nitrogen evaporated from the first air, remaining the main liquid oxygen.
Of course, the development of research in space there is a great difference, even more special preparation harsh environments on Earth and sy
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I recently met Amanda and upon learning that she was expecting her first child, I immediately offered to do some maternity photos for her. After a couple of emails and phone calls, we set up a date and time for a photo session. This morning, I had the great pleasure of photographing her and her husband at their home. To say they were great models would be a serious understatement. These two were awesome and certainly deserve the joy and thrill of having a child.
A very special thanks to my great friend Richard (aka KmountMan) for coming along with me to this shoot and making it an even more fun day. Thanks buddy!!! Richard has posted some of his outstanding shots from the day, here...
Both looking down at the babybelly. Baby is due in 4 days. They are very excited :-).
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With the expected arrival of a fleet of new Wrightbus electric buses for Oxford Bus Company in 2023/4, here are some photos of the fleet before the electric invasion begins!
All photos were taken in Oxford during 2023.
Made Black Canary's Jacket out of an old cape. Came out better than I thought it would! This 'fig is gonna be epic.
I expect that I have carried this subtlety business as far as I am likely with this capture. And no, I have no idea about the tile and am pretty sure that it is not even right. Believe it or not, this is yet another pass of pond #2 for exercise but I am still looking for anything that can be found. My camera carrying arm is going to end up longer than the other because I hate the neck strap. It is nearly December and I am hoping for fat snow flakes to fall, but then Greenland could use some snow before it melts entirely. It is not strange that it consists of sky reflections on rippling water. The rabbit wire wrapped around several younger trees about the shores leads me to believe that beavers are at work here. I have not seen a beaver house but the area is abutting wetlands.
On this day of nice skies and water, I came back to this spot I've used before with the intention of expanding my catalog. My previous take was one of my favorites. I am still fighting to slow this autumn's slipping away and I made another loop of the path but there was little breeze and there were only a few ripples on the water that ushered in the fine sky and foliage colors. I got a couple of shots of the foliage in the distance but it has deteriorated. I guess this reflection scene just grabbed me emotionally for some reason. Later, I decided to recapture earlier shots. There was slight but productive rippled water scenes and skies with some mixed clouds, water but the foliage is gone.
I am out here at Golden Ponds, the Longmont, Boulder County, Colorado greenbelt and rec area and fortunately, the turn-off is only a half-dozen blocks down Hover St. I met Dan the Longmont Man puzzling about how to maintain the habitat here. I wanted to look for possible locations even though the sky has been the pits lately. I wandered the green space and took some detail shots that were available, Drying cattails surrounded the ponds and most cattails are seeding the next year's supply. I shot a few pictures and kept the sky and bare trees out of the frame but the presence shows in the water. I am again fascinated by the subtle tonalities. The colorful autumn foliage fell around the ponds and under the water. I love shooting stark scenes with this camera and lens. I have not used any of my old Nikkors even though I programmed them into the camera's computer.
Long Range Heavy Bomber which first flew in 1952 and is expected to remain in service until 2030.
The first specifications for what became the B-52 Stratofortress Strategic Bomber was announced in 1946. The requirement was for a Bomber with a 10,000 mile range and a speed of over 500mph. Boeing originally proposed Piston Engines for the B-52 to achieve this range, but under pressure from the Air Force which wanted the Aircraft to fly as high and fast as possible to deliver Atomic Bombs, the design was eventually modified to incorporate eight Turbojets and swept wings.
Production was finally authorised during the Korean War (1950) and the prototype flew in 1952. The total off 744 finally delivered, cost $4,500 million (1961 prises) not including development and operation costs. Since its introduction to service in 1955, the B-52 has been in Front Line Service for over four decades (equivalent to the B-17 still being in service in 1977) the USAF expect to retain 66 Aircraft in service until 2030.
Weapons carried by B-52's in the Strategic Role have included early High-Altitude Thermonuclear (hydrogen) Bombs in the 3 to 10 Megaton Range, Parachute-Retarded Bombs for Low-Altitude Attack, Hound Dog and AGM-86 Air-Launched Cruise Missiles for 'Stand-Off Attack'. These different forms of delivery reflected responses to improved Air Defence Systems.
The Boeing B-52 Stratofortress is a Long-Range, Subsonic, Jet-Powered Strategic Bomber, designed and built by Boeing, which has continued to provide support and upgrades. it has been operated by the United States Air Force (USAF) since the 1950's. The Bomber is capable of carrying up to 70,000lb of Weapons, and has a typical Combat Range of more than 8,800 miles without Aerial Refueling.
Beginning with the successful contract bid in June 1946, the B-52 design evolved from a Straight Wing Aircraft powered by six Turboprop Engines to the final prototype 'YB-52' with eight Turbojet Engines and Swept Wings. The B-52 took its maiden flight in April 1952. Built to carry Nuclear Weapons for Cold War-Era Deterrence Missions, the B-52 Stratofortress replaced the Convair B-36 Peacemaker. A veteran of several wars, and has dropped only Conventional Munitions in Combat. The B-52's official name 'Stratofortress' is rarely used, informally, the Aircraft has become commonly referred to as the ''BUFF'' (Big Ugly Fat Fucker/Fella).
The B-52 has been in service with the USAF since 1955, as of June 2019, there are 76 Aircraft in inventory, 58 operated by Active Forces (2nd Bomb Wing and 5th Bomb Wing) 18 by Reserve Forces (307th Bomb Wing) and about 12 in long-term storage at the Davis-Monthan AFB Boneyard. The Bombers flew under the Strategic Air Command (SAC) until it was disestablished in 1992 and its Aircraft absorbed into the Air Combat Command (ACC) in 2010, all B-52 Stratofortresse's were transferred from the ACC to the new Air Force Global Strike Command (AFGSC). Superior performance at high subsonic speeds and relatively low operating costs have kept them in service despite the advent of later, more advanced Strategic Bombers, including the Mach 2+ B-58 Hustler, the canceled Mach 3 B-70 Valkyrie, the variable-geometry B-1 Lancer, and the stealth B-2 Spirit. The B-52 completed 60 years of continuous service with its original operator in 2015. After being upgraded between 2013 and 2015, the last Aircraft are expected to serve into the 2030's or possibly beyond.
▪︎Role: Strategic Bomber
▪︎National Origin: United States
▪︎Manufacturer: Boeing
▪︎First Flight: 15th April 1952
▪︎Introduction: February 1955
▪︎Status: In Service
▪︎Primary Users: United States Air Force / NASA
▪︎Produced: 1952 to 1962
▪︎Number Built: 744
▪︎Crew: Pilot / Copilot / Weapon Systems Officer / Navigator / Electronic Warfare Officer
▪︎Length: 159ft 4in
▪︎Wingspan: 185ft
▪︎Height: 40ft 8in
▪︎Wing Area: 4,000 sq ft
▪︎Empty Weight: 185,000lb
▪︎Gross Weight: 265,000lb
▪︎Maximum Takeoff Weight: 488,000lb
▪︎Fuel capacity: 39,948 Imperial gallons
▪︎Powerplant: 8 x Pratt & Whitney TF33-P-3/103 Turbofans 17,000 lbf thrust each
▪︎Maximum Speed: 650mph
▪︎Cruise Speed: 509mph
▪︎Combat Range: 8,800 miles
▪︎Service Ceiling: 50,000ft
▪︎Rate of Climb: 6,270 ft/min
▪︎Weapons: 1 x 0.787in M61 Vulcan Cannon originally mounted in a Remote Controlled Tail ▪︎Turret on the H-model, removed in 1991 from all Operational Aircraft
▪︎Bombs: Approximately 70,000lb mixed Ordnance Bombs / Mines / Missiles in various configurations
▪︎Avionics: Electro-Optical Viewing System that uses Platinum Silicide Forward Looking Infrared and High Resolution Low-Light-Level Television Sensors
ADR-8 Chaff Rocket (1965 to 1970)
LITENING Advanced Targeting System
Sniper Advanced Targeting Pod
IBM AP-101 Computer.
Lucian Freud (1922-2011)
oil on canvas
This tiny painting was made in 2005, and is one of the latest in Freud's series of 'naked portraits'. The model was Annabel Mullion, who was expecting her fourth child. Freud also made an etching of the composition, on a much larger scale.
Ashmolean Museum, Oxford.
2017 Mid-Season Invitational Finals at Jeunesse Arena in Rio de Janeiro, Rio de Janeiro, Brazil, on 21 May 2017.
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
The Sondergerät SG104 "Münchhausen" was a German airborne recoillless 355.6 mm (14-inch) caliber gun, intended to engage even the roughest enemy battleships, primarily those of the Royal Navy. The design of this unusual and massive weapon began in 1939. The rationale behind it was that a battleship’s most vulnerable part was the deck – a flat surface, with relatively thin armor (as typical hits were expected on the flanks) and ideally with vital targets underneath, so that a single, good hit would cripple of even destroy a ship. The purpose of such a high angle of attack was likely to allow the projectile to penetrate the target ship's deck, where the ship's armor, if there was any, would have been much thinner than the armor on its sidesHowever, hitting the deck properly with another ship’s main gun was not easy, since it could only be affected through indirect hits and the typical angle of the attack from aballistic shot would not necessarily be ideal for deep penetration, esp. at long range.
The solution to this problem: ensure that the heavy projectile would hit its target directly from above, ideally at a very steep angle. To achieve this, the gun with battleship caliber was “relocated” from a carrier ship or a coastal battery onto an aircraft – specifically to a type that was capable of dive-bombing, a feature that almost any German bomber model of the time offered.
Firing such a heavy weapon caused a lot fo problems, which were severe even if the gun was mounted on a ship or on land. To compensate for such a large-caliber gun’s recoil and to make firing a 14 in shell (which alone weighed around almost 700 kg/1.550 lb, plus the charge) from a relatively light airframe feasible, the respective gun had to be as light as possible and avoid any recoil, which would easily tear an aircraft – even a bomber – apart upon firing. Therefore, the Gerät 104 was designed as a recoilless cannon. Its firing system involved venting the same amount of the weapon's propellant gas for its round to the rear of the launch tube (which was open at both ends), in the same fashion as a rocket launcher. This created a forward directed momentum which was nearly equal to the rearward momentum (recoil) imparted to the system by accelerating the projectile itself. The balance thus created did not leave much net momentum to be imparted to the weapon's mounting or the carrying airframe in the form of felt recoil. A further share of the recoil induced by the moving round itself could be compensated by a muzzle brake which re-directed a part of the firing gases backwards. Since recoil had been mostly negated, a heavy and complex recoil damping mechanism was not necessary – even though the weapon itself was huge and heavy.
Work on the "Münchhausen" device (a secret project handle after a fictional German nobleman created by the German writer Rudolf Erich Raspe in the late 18th century who reputedly had ridden on a cannonball between enemy frontlines), was done by Rheinmetall-Borsig and lasted until 1941. The first test of a prototype weapon was conducted on 9th of September 1940 in Unterlüss with a satisfactory result, even though the weapon was only mounted onto an open rack and not integrated into an airframe yet. At that time, potential carriers were the Ju 88, the Dornier Do 217 and the new Junkers Ju 288. Even though the system’s efficacy was doubted, the prospect of delivering a single, fatal blow to an important , armored arget superseded any doubts at the RLM, and the project was greenlit in early 1942 for the next stage: the integration of the Sondergerät 104 into an existing airframe. The Ju 88 and its successor, the Ju 188, turned out to be too light and lacked carrying capacity for the complete, loaded weapon, and the favored Ju 288 was never produced, so that only the Dornier Do 217 or the bigger He 177 remained as a suitable carriers. The Do 217 was eventually chosen because it had the biggest payload and the airframe was proven and readily available.
After calculations had verified that the designed 14 in rifle would have effectively no recoil, preliminary tests with dumm airframes were carried out. After ground trials with a Do 217 E day bomber to check recoil and blast effects on the airframe, the development and production of a limited Nullserie (pre-production series) of the dedicated Do 217 F variant for field tests and eventual operational use against British sea and land targets was ordered in April 1942.
The resulting Do 217 F-0 was based on the late “E” bomber variant and powered by a pair of BMW 801 radial engines. It was, however, heavily modified for its unique weapon and the highly specialized mission profile: upon arriving at the zone of operation at high altitude, the aircraft would initiate a dive with an angle of attack between 50° and 80° from the horizontal, firing the SG 104 at an altitude between 6,000 and 2,000 meters. The flight time of the projectile could range from 16.0 seconds for a shot from an altitude of 6,000 meters at a 50° angle to just 4.4 seconds for a shot from 2.000 meters at an almost vertical 80° angle. Muzzle velocity of the SG 104 was only 300 m/s, but, prior to impact, the effective velocity of the projectile was projected to range between 449 and 468 m/s (1,616 to 1,674 km/h). Together with the round's weight of roughly 700 kg (1.550 lb) and a hardened tip, this would still ensure a high penetration potential.
The operational Sondergerät 104 had an empty mass of 2.780 kg (6,123 lb) and its complete 14 inch double cartridge weighed around 1.600 kg (3,525 lb). The loaded mass of the weapon was 4,237 kg, stretching the limits of the Do 217’s load capacity to the maximum, so that some armor and less vital pieces of equipment were deleted. Crew and defensive armament were reduced to a minimum.
Even though there had been plans to integrate the wepaon into the airframe (on the Ju 288), the Gerät 104 was on the Do 217 F-0 mounted externally and occupied the whole space under the aircraft, precluding any use of the bomb bay. The latter was occupied by the Gerät 104’s complex mount, which extended to the outside under a streamlined fairing and held the weapon at a distance from the airframe. Between the mount’s struts inside of the fuselage, an additional fuel tank for balance reasons was added, too.
The gun’s center, where the heavy round was carried, was positioned under the aircraft’s center of gravity, so that the gun barrel markedly protruded from under the aircraft’s nose. To make enough space, the Do 217 Es bomb aimer’s ventral gondola and his rearward-facing defensive position under the cockpit were omitted and faired over. The nose section was also totally different: the original extensive glazing (the so-called “Kampfkopf”) was replaced by a smaller, conventional canopy, similar to the later Do 217 J and N night fighter versions, together with a solid nose - the original glass panels would have easily shattered upon firing the gun, esp. in a steep high-speed dive. A "Lotfernrohr" bomb aiming device was still installed in a streamlined and protected fairing, though, so that the navigator could guide the pilot during the approach to the target and during the attack run.
To stabilize the heavy aircraft during its attack and to time- and safely pull out of the dive, a massive mechanical dive brake was mounted at the extended tail tip, which unfolded with four "petals". A charecteristic stabilizing dorsal strake was added between the twin fins, too.
The ventral area behind the gun’s rear-facing muzzle received additional metal plating and blast guiding vanes, after trials in late 1940 had revealed that firing the SG 104 could easily damage the Do 217’s tail structure, esp. all of the tail surfaces’ rudders and the fins’ lower ends in particular. Due to all this extra weight, the Do 217 F-0’s defensive armament consisted only of a single 13 mm MG 131 machine gun in a manually operated dorsal position behind the cockpit cabin, which offered space for a crew of three. A fixed 15 mm MG 151 autocannon was mounted in the nose, too, a weapon with a long barrel for extended range and accuracy. It was not an offensive weapon, though, rather intended as an aiming aid for the SG 104 because it was loaded with tracer bullets: during the final phase of the attack dive, the pilot kept firing the MG 151, and the bullet trail showed if he was on target to fire the SG 104 when the right altitude/range had been reached.
The first Do 217 F-0 was flown and tested in late 1943, and after some detail changes the type was cleared for a limited production run of ten aircraft in January 1944. The first operational machine was delivered to a dedicated testing commando, the Erprobungskommando 104 “Münchhausen”, also known as “Sonderkommando Münchhausen” or simply “E-Staffel 104”. The unit was based at Bordeaux/Merignac and directly attached to the KG 40's as a staff flight. At that time, KG 40 operated Do 217 and He 177 bombers and frequently flew reconnaissance and anti-shipping missions over the Atlantic west of France, up to the British west and southern coast, equipped with experimental Henschel Hs 293 glide bombs.
Initial flights confirmed that the Do 217 airframe was burdened with the SG 104 to its limits, the already rather sluggish aircraft (the Do 217 had generally a high wing loading and was not easy to fly) lost anything that was left of what could be called agility. It needed an experienced pilot to handle it safely, esp. during start and landing. It is no wonder that two Do 217 F-0s suffered ground accidents during the first two weeks of operations, but the machines could be repaired, resume the test program and carry out attack missions.
However, during one of the first test shots with the weapon, one Do 217 F-0 lost its complete tail section though the gun blast, and the aircraft crashed into the Bay of Biscay, killing the complete crew.
On 4th or April 1944 the first "hot" attack against an enemy ship was executed in the Celtic Sea off of Brest, against a convoy of 20 ships homeward bound from Gibraltar. The attack was not successful, though, the shot missing its target, and the German bomber was attacked and heavily damaged by British Bristol Beaufighters that had been deployed to protect the ships. The Do 217F-0 eventually crashed and sank into the Atlantic before it could reach land again.
A couple of days later, on 10th of April, the first attempt to attack and destroy a land target was undertaken: two Do 217 F-0s took off to attack Bouldnor Battery, an armored British artillery position located on the Isle of Wight. One machine had to abort the attack due to oil leakages, the second Do 217 F-0 eventually reached its target and made a shallow attack run, but heavy fog obscured the location and the otherwise successful shot missed the fortification. Upon return to its home base the aircraft was intercepted by RAF fighters over the Channel and heavily damaged, even though German fighters deployed from France came to the rescue, fought the British attackers off and escorted the limping Do 217 F-0 back to its home base.
These events revealed that the overall SG 104 concept was generally feasible, but also showed that the Do 217 F-0 was very vulnerable without air superiority or a suitable escort, so that new tactics had to be developed. One consequence was that further Do 217 F-0 deployments were now supported by V/KG 40, the Luftwaffe's only long range maritime fighter unit. These escorts consisted of Junkers Ju 88C-6s, which were capable of keeping up with the Do 217 F-0 and fend of intercepting RAF Coastal Command’s Beaufighters and later also Mosquitos.
In the meantime, tests with the SG 104 progressed and several modifications were tested on different EKdo 104's Do 217 F-0s. One major upgrade was a further strengthening of the tail section, which added another 200 kg (440 lb) to the aircraft's dry weight. Furthermore, at least three aircraft were outfitted with additional dive brakes under the outer wings, so that the dive could be better controlled and intercepted. these aircraft, however, lost their plumbed underwing hardpoints, but these were only ever used for drop tanks during transfer flights - a loaded SG 104 precluded any other ordnance. On two other aircraft the SG 104 was modified to test different muzzle brakes and deflectors for the rear-facing opening, so that the gun blast was more effectively guided away from the airframe to prevent instability and structural damage. For instance, one machine was equipped with a bifurcated blast deflector that directed the rearward gasses partly sideways, away from the fuselage.
These tests did not last long, though. During the Allied Normandy landings in June 1944 E-Staffel 104 was hastily thrown into action and made several poorly-prepared attack runs against Allied support ships. The biggest success was a full hit and the resulting sinking of the Norwegian destroyer HNoMS Svenner (G03) by "1A+BA" at dawn on 6th of June, off Sword, one of the Allied landing zones. Other targets were engaged, too, but only with little effect. This involvement, however, led to the loss of three Do 217 F-0s within just two days and four more heavily damaged aircraft – leaving only two of EKdo 104's Do 217 F-0s operational.
With the Allied invasion of France and a worsening war condition, the SG 104 program was stopped in August 1944 and the idea of an airborne anti-ship gun axed in favor of more flexible guided weapons like the Hs 293 missile and the Fritz-X glide bomb. Plans for a further developed weapon with a three-round drum magazine were immediately stopped, also because there was no carrier aircraft in sight that could carry and deploy this complex 6.5 tons weapon. However, work on the SG 104 and the experience gained from EKdo 104's field tests were not in vain. The knowledge gathered from the Münchhausen program was directly used for the design of a wide range of other, smaller recoilless aircraft weapons, including the magnetically-triggered SG 113 "Förstersonde" anti-tank weapon or the lightweight SG 118 "Rohrblock" unguided air-to-air missile battery for the Heinkel He 162 "Volksjäger".
General characteristics:
Crew: 3 (pilot, navigator, radio operator/gunner)
Length: 20,73 m (67 ft 11 in) overall
18,93 m (62 ft 3/4 in) hull only
Wingspan: 19 m (62 ft 4 in)
Height: 4.97 m (16 ft 4 in)
Wing area: 57 m² (610 sq ft)
Empty weight: 9,065 kg (19,985 lb)
Empty equipped weight:10,950 kg (24,140 lb)
Max takeoff weight: 16,700 kg (36,817 lb)
Fuel capacity: 2,960 l (780 US gal; 650 imp gal) in fuselage tank and four wing tanks
Powerplant:
2× BMW 801D-2 14-cylinder air-cooled radial piston engines, delivering
1,300 kW (1,700 hp) each for take-off and 1,070 kW (1,440 hp) at 5,700 m (18,700 ft),
driving 3-bladed VDM constant-speed propellers
Performance:
Maximum speed: 475 km/h (295 mph, 256 kn) at sea level
560 km/h (350 mph; 300 kn) at 5,700 m (18,700 ft)
Cruise speed: 400 km/h (250 mph, 220 kn) with loaded Gerät 104 at optimum altitude
Range: 2,180 km (1,350 mi, 1,180 nmi) with maximum internal fuel
Ferry range: 2,500 km (1,600 mi, 1,300 nmi); unarmed, with auxiliary fuel tanks
Service ceiling: 7,370 m (24,180 ft) with loaded Gerät 104,
9,500 m (31,200 ft) after firing
Rate of climb: 3.5 m/s (690 ft/min)
Time to altitude: 1,000 m (3,300 ft) in 4 minutes 10 seconds
2,000 m (6,600 ft) in 8 minutes 20 seconds
6,100 m (20,000 ft) in 24 minutes 40 seconds
Armament:
1x 355.6 mm (14-inch) Sondergerät 104 recoilless gun with a single round in ventral position
1x 15 mm (0.787 in) MG 151 machine cannon with 200 rounds, fixed in the nose
1x 13 mm (0.512 in) MG 131 machine gun with 500 rounds, movable in dorsal position
Two underwing hardpoints for a 900 l drop tank each, but only used during unarmed ferry flights
The kit and its assembly:
This was another submission to the "Gunships" group build at whatifmodellers.com in late 2021, and inspiration struck when I realized that I had two Italeri Do 217 in The Stash - a bomber and a night fighter - that could be combined into a suitable (fictional) carrier for a Sondergerät 104. This mighty weapon actually existed and even reached the hardware/test stage - but it was never integrated into an airframe and tested in flight. But that's what this model is supposed to depict.
On the Do 217, the Sg 104 would have been carried externally under the fuselage, even though there had been plans to integrate this recoilless rifle into airframes, esp. into the Ju 288. Since the latter never made it into production, the Do 217 would have been the most logical alternative, also because it had the highest payload of all German bombers during WWII and probably the only aircraft capable of carrying and deploying the Münchhausen device, as the SG 104 was also known.
The fictional Do 217 F-0 is a kitbashing, using a Do 217 N fuselage, combined with the wings from a Do 217 K bomber, plus some modifications. What initially sounded like a simple plan soon turned into a improvisation mess: it took some time to realize that I had already donated the Do 217 K's BMW 801 engines to another project, an upgraded He 115... I did not want to use the nightfighter's more powerful DB 603s, and I was lucky to have an Italeri Ju 188 kit at hand which comes with optional BMW 801s and Jumo 211s. Transplanting these engines onto the Do 217's wings took some tailoring of the adapter plates, but was feasible. However, the BMW 801s from the Ju 188 kit have a flaw: they lack the engine's characteristic cooling fans... Another lucky find: I found two such parts in the scrap box, even though from different kits - one left over from another Italeri Do 217 K, the other one from what I assume is/was an Italeri 1:72 Fw 190 A/F. To make matters worse, one propeller from the Ju 188 kit was missing, so that I had to find a(nother) replacement. :-/
I eventually used something that looked like an 1:72 F6F Hellcat propeller, but I an not certain about this because I have never built this model...? With some trimming on the blades' trailing edges and other mods, the donor's overall look could be adapted to the Ju 188 benchmark. Both propellers were mounted on metal axis' so that they could also carry the cooling fans. Lots of work, but the result looks quite good.
The Do 217 N's hull lost the lower rear gunner position and its ventral gondola, which was faired over with a piece of styrene sheet. The pilot was taken OOB, the gunner in the rear position was replaced by a more blob-like crew member from the scrap box. The plan to add a navigator in the seat to the lower right of the pilot did not work out due to space shortage, but this figure would probably have been invisble, anyway.
All gun openings in the nose were filled and PSRed away, and a fairing for a bomb aiming device and a single gun (the barrel is a hollow steel needle) were added.
The SG 104 was scratched. Starting point was a white metal replacement barrel for an 1:35 ISU-152 SPG with a brass muzzle brake. However, after dry-fitting the barrel under the hull the barrel turned out to be much too wide, so that only the muzzal brake survived and the rest of the weapon was created from a buddy refueling pod (from an Italeri 1:72 Luftwaffe Tornado, because of its two conical ends) and protective plastic caps from medical canulas. To attach this creation to the hull I abused a conformal belly tank from a Matchbox Gloster Meteor night fighter and tailored it into a streamlined fairing. While this quite a Frankenstein creation, the overall dimensions match the real SG 104 prototype and its look well.
Other cosmetic modifications include a pair of underwing dive brakes, translanted from an Italeri 1:72 Ju 88 A-4 kit, an extended (scratched) tail "stinger" which resembles the real dive brake arrangement that was installed on some Do 217 E bombers, and I added blast deflector vanes and a dorsal stabilizer fin.
In order to provide the aircraft with enough ground clearance, the tail wheel was slightly extended. Thanks to the long tail stinger, this is not blatantly obvious.
Painting and markings:
This was not an easy choice, but as a kind of prototype I decided that the paint scheme should be rather conservative. However, German aircraft operating over the Atlantic tended to carry rather pale schemes, so that the standard pattern of RLM 70/71/65 (Dunkelgrün, Schwarzgrün and Hellblau) with a low waterline - typical for experimental types - would hardly be appropriate.
I eventually found a compromise on a He 177 bomber (coded 6N+BN) from 1944 that was operated by KG 100: this particular aircraft had a lightened upper camouflage - still a standard splinter scheme but consisting of RLM 71 and 02 (Dunkelgrün and Grau; I used Modelmaster 2081 and Humbrol 240), a combination that had been used on German fighters during the Battle of Britain when the standard colors turned out to be too dark for operations over the Channel. The aircraft also carried standard RLM 65 (or maybe the new RLM76) underneath (Humbrol 65) and on the fin, but with a very high and slightly wavy waterline. As a rather unusual feature, no typical camouflage mottles were carried on the flanks or the fin, giving the aircraft a very bleak and simple look.
Despite my fears that this might look rather boring I adapted this scheme for the Do 217 F-0, and once basic painting was completed I was rather pleased by the aircraft's look! As an aircraft operated at the Western front, no additional markings like fuselage bands were carried.
To set the SG 104 apart from the airframe, I painted the weapon's visible parts in RLM 66 (Schwarzgrau, Humbrol 67), because this tone was frequently used for machinery (including the interior surfaces of aircraft towards 1945).
RLM 02 was also used for the interior surfaces and the landing gear, even though I used a slightly different, lighter shade in form of Revell 45 (Helloliv).
A light black ink washing was applied and post-shading to emphasize panel lines. Most markings/decals came from a Begemot 1:72 He 11 sheet, including the unusual green tactical code - it belongs to a staff unit, a suitable marking for such an experimental aircraft. The green (Humbrol 2) was carried over to the tips of the propeller spinners. The unit's code "1A" is fictional, AFAIK this combination had never been used by the Luftwaffe.
The small unit badge was alucky find: it actually depicts the fictional Baron von Münchhausen riding on a cannonball, and it comes from an Academy 1:72 Me 163 kit and its respective sheet. The mission markings underneath, depicting two anti-ship missions plus a successful sinking, came from a TL Modellbau 1:72 scale sheet with generic German WWII victory markings.
After some soot stains around the engine exhaust and weapon muzzles had been added with graphite, the model was sealed with matt acrylic varnish and final details like position lights and wire antennae (from heated black plastic sprue material) were added.
Well, what started as a combination of two kits of the same kind with a simple huge pipe underneath turned out to be more demanding than expected. The (incomplete) replacement engines were quite a challenge, and body work on the hull (tail stinger, fairing for the SG 104 as well as the weapon itself) turned out to be more complex and extensive than initially thought of. The result looks quite convincing, also supported by the rather simple paint scheme which IMHO just "looks right" and very convincing. And the whole thing is probably the most direct representation of the inspiring "Gunship" theme!
If you were expecting a handsome wheel of rich mahogany and gleaming brass, you'd be disappointed. This tiny wheel is how you steer the 900-foot-long, 69,000-ton container ship MV Monte Rosa.
In our boating days, I took a course on navigation at a Coast Guard facility. At one point, for the heck of it, they let us try a simulator that let us experience driving a ship the size of the MV Monte Rosa. To make it interesting, we were bringing the vessel up a winding river channel.
Let's just say that with glacially slow response times, a freighter doesn't handle like your grandma's VW Beetle. In no time I had under- and over-steered the poor ship under my command onto the riverbank.
At sea.
en.wikipedia.org/wiki/Rhesus_macaque
The rhesus macaque (Macaca mulatta), is one of the best-known species of Old World monkeys. It is listed as Least Concern in the IUCN Red List of Threatened Species in view of its wide distribution, presumed large population, and its tolerance of a broad range of habitats. Native to South, Central and Southeast Asia, troops of Macaca mulatta inhabit a great variety of habitats from grasslands to arid and forested areas, but also close to human settlements
Characteristics
The rhesus macaque is brown or grey in color and has a pink face, which is bereft of fur. Its tail is of medium length and averages between 20.7 and 22.9 cm (8.1 and 9.0 in). Adult males measure approximately 53 cm (21 in) on average and weigh about 7.7 kg (17 lb). Females are smaller, averaging 47 cm (19 in) in length and 5.3 kg (12 lb) in weight. Rhesus macaques have on average 50 vertebrae. Their intermembral index (ratio of arm length to leg length) is 89%. They have dorsal scapulae and a wide rib cage.
The rhesus macaque has 32 teeth with a dental formula of 2.1.2.3/2.1.2.3 and bilophodont molars. The upper molars have four cusps: paracone, metacone, protocone and hypocone. The lower molars also have four cusps: metaconid, protoconid, hypoconid and entoconid.
Distribution and habitat
Rhesus macaques are native to northern India, Bangladesh, Pakistan, Nepal, Burma, Thailand, Afghanistan, Vietnam, southern China, and some neighboring areas. They have the widest geographic ranges of any nonhuman primate, occupying a great diversity of altitudes throughout Central, South and Southeast Asia. Inhabiting arid, open areas, rhesus macaques may be found in grasslands, woodlands and in mountainous regions up to 2,500 m (8,200 ft) in elevation. They are regular swimmers. Babies as young as a few days old can swim, and adults are known to swim over a half mile between islands, but are often found drowned in small groups where their drinking waters lie. Rhesus macaques are noted for their tendency to move from rural to urban areas, coming to rely on handouts or refuse from humans.[3]
The southern and the northern distributional limits for rhesus and bonnet macaques, respectively, currently run parallel to each other in the western part of India, are separated by a large gap in the center, and converge on the eastern coast of the peninsula to form a distribution overlap zone. This overlap region is characterized by the presence of mixed-species troops, with pure troops of both species sometimes occurring even in close proximity to one another. The range extension of rhesus macaque – a natural process in some areas and a direct consequence of introduction by humans in other regions – poses grave implications for the endemic and declining populations of bonnet macaques in southern India.[4]
Distribution of subspecies and populations
The name "rhesus" is reminiscent of the Greek mythological king Rhesus. However, the French naturalist Jean-Baptiste Audebert, who applied the name to the species, stated: "it has no meaning".[5]
According to Zimmermann’s first description of 1780, the rhesus macaque is distributed in eastern Afghanistan, Bangladesh, Bhutan, as far east as the Brahmaputra Valley in peninsular India, Nepal and northern Pakistan. Today, this is known as the Indian rhesus macaque M. m. mulatta, which includes the morphologically similar M. rhesus villosus described by True in 1894 from Kashmir and M. m. mcmahoni described by Pocock in 1932 from Kootai, Pakistan. Several Chinese subspecies of rhesus macaques have been described between 1867 and 1917. The molecular differences identified among populations, however, are alone not consistent enough to conclusively define any subspecies.[6]
The Chinese subspecies can be divided in:
M. m. mulatta is found in western and central China, in the south of Yunnan and southwest of Guangxi;[7]
M. m. lasiota (Gray, 1868), the west Chinese rhesus macaque, is distributed in the west of Sichuan, northwest of Yunnan, and southeast of Qinghai;[7] it is possibly synonymous with M. m. sanctijohannis (Swinhoe, 1867), if not with M. m. mulatta.[6]
M. m. tcheliensis (Milne-Edwards, 1870), the north Chinese rhesus macaque, lives in the north of Henan, south of Shanxi and near Beijing. Some consider it as the most endangered subspecies.[8] Others consider it possibly synonymous with M. m. sanctijohannis, if not with M. m. mulatta.[6]
M. m. vestita (Milne-Edwards, 1892), the Tibetan rhesus macaque, lives in the southeast of Tibet, northwest of Yunnan (Deqing), and perhaps including Yushu;[7] it is possibly synonymous with M. m. sanctijohannis, if not with M. m. mulatta.[6]
M. m. littoralis (Elliot, 1909), the south Chinese rhesus macaque, lives in Fujian, Zhejiang, Anhui, Jiangxi, Hunan, Hubei, Guizhou, northwest of Guangdong, north of Guangxi, northeast of Yunnan, east of Sichuan and south of Shaanxi;[7] it is possibly synonymous with M. m. sanctijohannis, if not with M. m. mulatta.[6]
M. m. brevicaudus, also referred to as Pithecus brevicaudus (Elliot, 1913), lives on the Hainan Island and Wanshan Islands in Guangdong, and the islands near Hong Kong;[7] it may be synonymous with M. m. mulatta.[6]
M. m. siamica (Kloss, 1917), the Indochinese rhesus macaque, is distributed in Myanmar, in the north of Thailand and Vietnam, in Laos and in the Chinese provinces of Anhui, northwest Guangxi, Guizhou, Hubei, Hunan, central and eastern Sichuan, and western and south-central Yunnan; possibly synonymous with M. m. sanctijohannis, if not with M. m. mulatta.[6]
Feral colonies in the United States[edit]
Main article: feral rhesus macaque
Around the spring of 1938, a colony of rhesus macaques called "the Nazuri's" was released in around Silver Springs in Florida by a tour boat operator known locally as "Colonel Tooey" to enhance his "Jungle Cruise". A traditional story that the monkeys were released for scenery enhancement in the Tarzan movies that were filmed at that location is false, as the only Tarzan movie filmed in the area, 1939's Tarzan Finds a Son! does not contain rhesus macaques.[9] In addition, various colonies of rhesus and other monkey species are speculated to be the result of zoos and wildlife parks destroyed in hurricanes, most notably Hurricane Andrew.[10]
A notable colony of rhesus macaques on Morgan Island, one of the Sea Islands in the South Carolina Lowcountry, was imported in the 1970s for use in local labs and are by all accounts thriving.[11]
Ecology and behavior
Although they are infamous as urban pests, which are quick to steal not only food, but also household items, it is not certain if the pair of jeans draped over the wall on the right is their handiwork.
Rhesus macaques are diurnal animals, and both arboreal and terrestrial. They are quadrupedal and, when on the ground, they walk digitigrade and plantigrade. They are mostly herbivorous, feeding on mainly fruit, but also eating seeds, roots, buds, bark, and cereals. They are estimated to consume around 99 different plant species in 46 families. During the monsoon season, they get much of their water from ripe and succulent fruit. Macaques living far from water sources lick dewdrops from leaves and drink rainwater accumulated in tree hollows.[12] They have also been observed eating termites, grasshoppers, ants and beetles.[13] When food is abundant, they are distributed in patches and forage throughout the day in their home ranges. They drink water when foraging and gather around streams and rivers.[14] Rhesus macaques have specialized pouch-like cheeks, allowing them to temporarily hoard their food.
In psychological research, rhesus macaques have demonstrated a variety of complex cognitive abilities, including the ability to make same-different judgments, understand simple rules, and monitor their own mental states.[15] [16] They have even been shown to demonstrate self-agency,[17] an important type of self-awareness.
Group structure
Like other macaques, rhesus troops comprise a mixture of 20–200 males and females.[18] Females may outnumber the males by a ratio of 4:1. Males and females both have separate hierarchies. Females have highly stable matrilineal hierarchies in which a female’s rank is dependent on the rank of her mother. In addition, a single group may have multiple matrilineal lines existing in a hierarchy, and a female outranks any unrelated females that rank lower than her mother.[19] Rhesus macaques are unusual in that the youngest females tend to outrank their older sisters.[20] This is likely because young females are more fit and fertile. Mothers seem to prevent the older daughters from forming coalitions against her. The youngest daughter is the most dependent on the mother, and would have nothing to gain from helping her siblings in overthrowing their mother. Since each daughter had a high rank in her early years, rebelling against her mother is discouraged.[21] Juvenile male macaques also exist in matrilineal lines, but once they reach four to five years of age, they are driven out of their natal groups by the dominant male. Thus, adult males gain dominance by age and experience.[14]
In the group, macaques position themselves based on rank. The "central male subgroup" contains the two or three oldest and most dominant males which are codominant, along with females, their infants and juveniles. This subgroup occupies the center of the group and determines the movements, foraging and other routines.[14] The females of this subgroup are also the most dominant of the entire group. The farther to the periphery a subgroup is, the less dominant it is. Subgroups on the periphery of the central group are run by one dominant male which ranks lower than the central males, and maintains order in the group and communicates messages between the central and peripheral males. A subgroup of subordinate, often subadult males occupy the very edge of the groups and have the responsibility of communicating with other macaque groups and making alarm calls.[22]
Communication
Rhesus macaques interact using a variety of facial expressive, vocalizations and body postures, and gestures. Perhaps the most common facial expression the macaque makes is the "silent bared teeth" face.[23] This is made between individuals of different social ranks with the lower ranking one giving the expression to its superior. A less dominant individual will also make a "fear grimace" accompanied by a scream to appease or redirect aggression.[24] Another submissive behavior is the "present rump", where an individual raises its tail and exposes its genitals to the dominant one.[23] A dominant individual will threaten another individual standing quadrupedally making a silent "open mouth stare" accompanied by the tail sticking straight.[25] During movements, macaques will make "coos" and "grunts". These are also made during affiliative interactions and approaches before grooming.[26] When they find rare food of high quality, macaques will emit "warbles," "harmonic arches", or "chirps." When in threatening situations, macaques will emit a single loud, high-pitched sound called a "shrill bark".[27] "Screeches," "screams", "squeaks", "pant-threats", "growls", and "barks" are used during aggressive interactions.[27] Infants "gecker" to attract their mother's attention.[28]
Reproduction
Adult male macaques try to maximize their reproductive success by entering into consort pairs with females, both in and outside the breeding period. Females prefer to mate with males that will increase the survival of their young. Thus, a consort male provides resources for his female and protects her from predators. Larger, more dominant males are more likely to provide for the females. The breeding period can last up to 11 days, and a female usually mates with four males during that time. Male rhesus macaques have not been observed to fight for access to sexually receptive females, although they suffer more wounds during the mating season.[29] Female macaques first breed when they are four years old, and reach menopause at around 25 years of age.[30] When mating, a male rhesus monkey usually ejaculates less than 15 seconds after sexual penetration.[31] Male macaques generally play no role in raising the young, but do have peaceful relationships with the offspring of their consort pairs.[14]
Mothers with one or more immature daughters in addition to their infants are in contact with their infants less than those with no older immature daughters, because the mothers may pass the parenting responsibilities to her daughters. High-ranking mothers with older immature daughters also reject their infants significantly more than those without older daughters, and tend to begin mating earlier in the mating season than expected based on their dates of parturition the preceding birth season.[32] Infants farther from the center of the groups are more vulnerable to infanticide from outside groups.[14] Some mothers abuse their infants, which is believed to be the result of controlling parenting styles.[33]
In science
The rhesus macaque is well known to science. Due to its relatively easy upkeep in captivity, wide availability and closeness to humans anatomically and physiologically, it has been used extensively in medical and biological research on human and animal health-related topics. It has given its name to the rhesus factor, one of the elements of a person's blood group, by the discoverers of the factor, Karl Landsteiner and Alexander Wiener. The rhesus macaque was also used in the well-known experiments on maternal deprivation carried out in the 1950s by controversial comparative psychologist Harry Harlow. Other medical breakthroughs facilitated by the use of the rhesus macaque include:
development of the rabies, smallpox, and polio vaccines
creation of drugs to manage HIV/AIDS
understanding of the female reproductive cycle and development of the embryo and the propagation of embryonic stem cells.[34]
The U.S. Army, the U.S. Air Force, and NASA launched rhesus macaques into outer space during the 1950s and 1960s, and the Soviet/Russian space program launched them into space as recently as 1997 on the Bion missions. One of these primates ("Able"), which was launched on a suborbital spaceflight in 1959, was one of the two first living beings (along with "Miss Baker" on the same mission) to travel in space and return alive.[citation needed]
On October 25, 1994, the rhesus macaque became the first cloned primate with the birth of Tetra. January 2001 saw the birth of ANDi, the first transgenic primate; ANDi carries foreign genes originally from a jellyfish.[citation needed]
Though most studies of the rhesus macaque are from various locations in northern India, some knowledge of the natural behavior of the species comes from studies carried out on a colony established by the Caribbean Primate Research Center of the University of Puerto Rico on the island of Cayo Santiago, off Puerto Rico.[citation needed] There are no predators on the island, and humans are not permitted to land except as part of the research programmes. The colony is provisioned to some extent, but about half of its food comes from natural foraging.
Rhesus macaques, like many macaques, carry the Herpes B virus. This virus does not typically harm the monkey but is very dangerous to humans in the rare event that it jumps species, for example in the 1997 death of Yerkes National Primate Research Center researcher Elizabeth Griffin.[35][36][37]
Sequencing the genome
Genomic information
NCBI genome ID 215
Ploidy diploid
Genome size 3,097.37 Mb
Number of chromosomes 21 pairs
Year of completion 2007
Work on the genome of the rhesus macaque was completed in 2007, making the species the second nonhuman primate to have its genome sequenced.[38] Humans and macaques apparently share about 93% of their DNA sequence and shared a common ancestor roughly 25 million years ago.[39] The rhesus macaque has 21 pairs of chromosomes.[40]
Comparison of rhesus macaques, chimpanzees and humans revealed the structure of ancestral primate genomes, positive selection pressure and lineage-specific expansions and contractions of gene families.
"The goal is to reconstruct the history of every gene in the human genome," said Evan Eichler, University of Washington, Seattle. DNA from different branches of the primate tree will allow us "to trace back the evolutionary changes that occurred at various time points, leading from the common ancestors of the primate clade to Homo sapiens," said Bruce Lahn, University of Chicago.[41]
After the human and chimpanzee genomes were sequenced and compared, it was usually impossible to tell whether differences were the result of the human or chimpanzee gene changing from the common ancestor. After the rhesus macaque genome was sequenced, three genes could be compared. If two genes were the same, they are presumed to be the original gene.[42]
The chimpanzee and human genome diverged 6 million years ago. They have 98% identity and many conserved regulatory regions. Comparing the macaque and human genomes, which diverged 25 million years ago and had 93% identity, further identified evolutionary pressure and gene function.
Like the chimpanzee, changes were on the level of gene rearrangements rather than single mutations. There were frequent insertions, deletions, changes in the order and number of genes, and segmental duplications near gaps, centromeres and telomeres. So macaque, chimpanzee, and human chromosomes are mosaics of each other.
Surprisingly, some normal gene sequences in healthy macaques and chimpanzees cause profound disease in humans. For example, the normal sequence of phenylalanine hydroxylase in macaques and chimpanzees is the mutated sequence responsible for phenylketonuria in humans. So humans must have been under evolutionary pressure to adopt a different mechanism.
Some gene families are conserved or under evolutionary pressure and expansion in all three primate species, while some are under expansion uniquely in human, chimpanzee or macaque.
For example, cholesterol pathways are conserved in all three species (and other primate species). In all three species, immune response genes are under positive selection, and genes of T cell-mediated immunity, signal transduction, cell adhesion, and membrane proteins generally. Genes for keratin, which produce hair shafts, were rapidly evolving in all three species, possibly because of climate change or mate selection. The X chromosome has three times more rearrangements than other chromosomes. The macaque gained 1,358 genes by duplication.
Triangulation of human, chimpanzee and macaque sequences showed expansion of gene families in each species.
The PKFP gene, important in sugar (fructose) metabolism, is expanded in macaques, possibly because of their high-fruit diet. So are genes for the olfactory receptor, cytochrome P450 (which degrades toxins), and CCL3L1-CCL4 (associated in humans with HIV susceptibility).
Immune genes are expanded in macaques, relative to all four great ape species. The macaque genome has 33 major histocompatibility genes, three times that of human. This has clinical significance because the macaque is used as an experimental model of the human immune system.
In humans, the preferentially expressed antigen of melanoma (PRAME) gene family is expanded. It is actively expressed in cancers, but normally is testis-specific, possibly involved in spermatogenesis. The PRAME family has 26 members on human chromosome 1. In the macaque, it has eight, and has been very simple and stable for millions of years. The PRAME family arose in translocations in the common mouse-primate ancestor 85 million years ago, and is expanded on mouse chromosome 4.
DNA microarrays are used in macaque research. For example, Michael Katze of University of Washington, Seattle, infected macaques with 1918 and modern influenzas. The DNA microarray showed the macaque genomic response to human influenza on a cellular level in each tissue. Both viruses stimulated innate immune system inflammation, but the 1918 flu stimulated stronger and more persistent inflammation, causing extensive tissue damage, and it did not stimulate the interferon-1 pathway. The DNA response showed a transition from innate to adaptive immune response over seven days.[43][44]
The full sequence and annotation of the Macaque genome is available on the Ensembl genome browser.