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For too many people, this is one of only a few memories they have of their babies. Sands is a fantastic charity that supports families through the loss of their children, before and soon after birth. In memory of all the hitched babies, gone too soon.
Some cold, hard facts:
•17 babies die every day in the UK (10 are stillbirths, 7 are neonatal deaths) totalling almost 6,500 baby deaths a year - the equivalent of 16 jumbo jets crashing every year with no survivors
•This is four times the number of people who die every year of MRSA
•This is double the number of adults who lose their lives on Britain’s roads every year
•Ten times more babies are stillborn than die of cot death every year in the UK.
•The stillbirth rate has remained almost unchanged for the past 10 years. (CEMACH)
•1 in every 200 babies are stillborn in the UK
•1 in every 300 babies born in the UK die in the first four weeks of life
•In half of all stillbirths the cause remains unexplained, although in more than half of these pregnancies the baby is smaller than it should be
•Many of these babies are born perfectly formed, with no clear reason why they died. We need to understand what is causing these deaths and take action to prevent avoidable losses
•The majority of unexplained stillbirths are in pregnancies that were previously considered low risk
Sands is the UK’s Stillbirth and Neonatal Death charity, an organisation which offers support to everyone affected by the death of a baby during pregnancy or after birth.
Sands’ core aims are to:
•Support anyone affected by the death of a baby;
•To work in partnership with health professionals to improve the quality of care and services offered to bereaved families; and
•To promote research and changes in practice that could help to reduce the loss of babies' lives
The death of a baby is a devastating experience. The effects of grief can be overwhelming and parents, their families and friends can be left feeling dazed, disorientated, isolated and exhausted.
The death of a baby can happen to any one of us. It has happened to too many of us.
What brings people together through Sands is the common experience of this painful loss.
June is the national awareness month; with this photograph I hope to do something to raise awareness of the work of this charity. What can you do?
This hydroelectric station was built in the beginning of the 19th century. It was one of the biggest of its time.
During the 2th World War all cabins and outbuildings were severely damaged by the explosions caused by the soldiers of the German army that was preparing to retreat to northern Italy.
After the italian rebuild the station it was serious reduced in capacity.
In the early seventies the station was taken out of production. And has been abandoned ever since.
Although this station played a importend role in the history of the city. No plans are made yet to renovate the place.
Visited this location in April 2014 during our Italy 2014 tour
In its last years, Broad Street was reduced to a single-platform stub. On 12 July 1985, about a year before closure, we see 501176 on the 1827 to Watford Junction.
More Info: www.axialracing.com/t/vehicles/rr10
The RR10 Bomber build-it-yourself kit is loaded with features allowing you to customize it and add your own electronics for the ultimate rock racer! Building on the current, successful ready-to-run model, this kit version includes a wide variety of desirable option parts that deliver next level performance and durability. Hard anodized aluminum suspension links, hard anodized aluminum steering links, long travel rear sway bar, hardened steel universal axles allowing up to 50 degrees of steering, aluminum lower link plates, and King adjustable machined aluminum shocks, all riding on sticky BFGoodrich® Baja T/A® KR2 tires wrapped around 2.2 Walker Evans Racing beadlock wheels.
FEATURES:
HARD ANODIZED MACHINED ALUMINUM THREADED LINKS:
The upper and lower suspension links as well as the steering tie rod and drag link are machined from aluminum to reduce flex and provide precise control over the roughest terrain. The tubes are threaded at both ends for easy assembly and they use larger and stronger M4 hardware.
HARD ANODIZED MACHINED ALUMINUM STEERING LINKS:
Our machined aluminum steering links give you more precise steering feel and response to help keep your rig pointed in the right direction. They’re hard anodized and use larger and stronger M4 hardware for durability.
LONG TRAVEL REAR SWAY BAR:
The pursuit of horsepower and the ability to put the power to the ground is one of the main aspects of offroad racing. This unique torsion bar design with long pivot arms used in conjunction with the long travel suspension is designed to help control the torque twist associated with massive power. This system also helps reduce body roll and adds stability at high speeds.
UNIVERSAL AXLES:
Our universal joint axles increase steering angle to 50 degrees, that's 60% over the stock dogbone/drive cup setup. Our universals provide smoother action for a higher performing, efficient drivetrain. The universal is oversized; a design you'd see on 1/8 scale vehicles and it's made of hardened steel so it's capable of handling extreme power.
• AR60 OCP universal axle set
• Up to 50 degrees of steering
• Smooth action for an efficient drivetrain
• Oversized design for durability
• Hardened steel construction
KING ADJUSTABLE MACHINED ALUMINUM SHOCKS:
The included aluminum King Shocks feature precision machined pistons which offer smooth performance throughout the range of travel. Made to tight tolerances, these aluminum shocks feature clear coated polished aluminum bodies, machined aluminum caps and aluminum preload spacers for precision shock adjustments. The rear shocks are mounted on the links rather than at the axle, allowing for more suspension travel which is better for high speed handling.
ALUMINUM LOWER LINK PLATES:
Includes hard anodized 2mm aluminum lower link plates for added durability and stiffness of the rear 4 link suspension.
2.2 WALKER EVANS RACING BEADLOCK WHEELS:
Officially licensed Walker Evans Racing beadlock wheels dressed in an aggressive all black style and they work with most 2.2 tires. Our IFD™ (Interchangeable Face Design) wheel system makes it easy to dress it up with a new look. The wheel design allows you to vary the amount of air passing through the breather holes. You can select between having one, two or three open holes (two, four or six total) by rotating the inner (beadlock) ring. The position is locked with reassembly.
• Three piece beadlock design
• Utilizes new 2x11mm pins for added strength
• Updated plastic hub adapter to eliminate slop and capture the new 2x11mm pin
• Adjustable breather holes for fine tuning tire performance
• Compatible with most 2.2 tires
• Easy six screw disassembly
BFGOODRICH® BAJA T/A® KR2 TIRES - R35 COMPOUND:
In the full-size world of off-road racing, BFGoodrich® tires have proven to be the ‘go-to’ tire for numerous racing victories, including Randy Slawson piloting them to victory at the 2013 and 2015 King of the Hammers. Axial’s version of this tire captures the same aggressive look and provides remarkable performance on a wide variety of surfaces. This is the perfect tire for this style of vehicle due to its high level of performance and diversity.
AR60 OCP-AXLE™:
The AR60 OCP-Axle™ is constructed from high strength composite material which has a low flex rate but is not as brittle as standard glass filled nylon. The combination of our axles and a true 4-link suspension gives you optimal performance for any terrain with the look of a real 1:1 vehicle.
• Off-center pumpkin design
• Axle tubes are reinforced with a boxed-in axle truss
• High strength composite material
• Updated steering knuckles for dual shear, also eliminates secondary bolt on plate
• Updated differential cover and servo mount for a new look
WB8 HD WILDBOAR™ DRIVESHAFTS, FRONT AND REAR:
The WB8 HD driveshafts feature an updated design with a larger diameter cross pin (2x11mm) along with an M4 Screw Shaft (2mm hex drive) for added strength. A center splined slider floats between each end and features added material which reduces flex and fatigue.
• 3-piece driveshaft with strengthened slider-floater tube.
• Increased surface at the connection between the ball joints and output shaft tubes.
• 2x11mm cross pin adds 25% more surface area providing more strength for the ball joint.
• Captured cross pin design eliminates older set screw design for more durability and easy maintenance.
MULTIPLE SHOCK/LINK POINTS AND DUAL SHEAR SHOCK MOUNTS:
We've included a variety of shock mounting points for running dual shock setups and for additional suspension tuning options. On the skid plate you'll find two front upper link mount positions and three rear upper link mount positions. All shock-mounting locations are dual shear with optional secondary shock mounts allowing for dual shock setups.
REALISTIC SCALE DETAILS:
Realistic scale details include molded driver figures, three pairs of helmets, molded shock reservoirs, a fuel cell, Bomber Fabrication body panels, two full color decal sheets with enough graphics for two completely unique looks, and a fully licensed scale tube chassis.
BFGoodrich® Tires and Baja T/A® KR2 Trademarks are used under License from Michelin
Odyssey Battery trademark(s) is/are the property of EnerSys and affiliates
NOTE: Prototype shown. Some imagery may differ from the actual product. Electronics shown are not included.
After my little break to Florida, it's back to the regularly scheduled program. Strong winds, blowing snow, and running long hood forward mean reduced visibility for the crew of the RRVW 2053 as they roll west of Olivia with covered hoppers of fertilizer for the co-op in Danube.
In order to populate New France and reduce the imbalance between men and women (19 men for 1 woman), King Louis XIV sent the Filles du Roy (literally daughters of the King) to the colony. Often orphans in France, they will have few time to flirt in America ! Upon arrival, they must get married and become pregnant as soon as possible.
Afin de peupler la Nouvelle-France et de réduire le déséquilibre entre les hommes et les femmes (19 hommes pour 1 femme), le roi Louis XIV envoie dans la colonie les Filles du Roy. Souvent orphelines en France, elles auront peu de temps pour le flirt en Amérique ! À leur arrivée, elles doivent se marier et devenir enceinte dès que possible.
When it comes to unique, iconic examples of midcentury modern homes, it’s hard to find one quirkier than John Lautner’s “Rawlins House” on Balboa Island in Newport Beach, CA.
Built in 1979 as a retirement home for physicist Bob Rawlins and his wife Marjorie, a musician, who both loved the midcentury style, but were looking for something a bit more interesting when they moved out West, the one-of-a-kind Rawlins House is now referred to fondly as the “treasure of Balboa Island”.
Due to its whimsical design, often described as looking like an open-mouthed shark or whale, it’s also called “Jaws” by neighbors.
John Lautner was their architect of choice for many reasons. He had studied with the renowned world-famous midcentury modern visionary architect Frank Lloyd Wright in the 1930s, but more importantly, the Rawlins liked his specific architectural style, especially his Googie designs.
Googie style is kind of a mash-up of classical midcentury modern style and futurism inspired by the Atomic Age and the Space Age. The Rawlins house meshes both design styles with its bold use of glass and wood, its curvaceous exterior aesthetic, the spare, sleek minimalistic lines, the open concept, and its celebration of indoor/outdoor living.
The Rawlins House is considered one of Lautner’s most memorable urban designs by architectural critics. Located on South Bay Front in Newport Beach Harbor, the modernistic domed residence, sporting notable architectural features like a stunning copper balcony and roof, is the perfect retreat for entertaining friends and celebrating the sunset beach-side over dinner and drinks or welcoming overnight guests.
John Lautner’s House was privately owned by the original owners until 2010. Since 2014 it has been listed for sale by real estate agents in the Beverly Hills and Orange County areas. Originally listed at $5,395 million, the water’s edge residence has been reduced multiple times over the years.
It was eventually purchased in 2017 for $3.772. New homeowner, Michael LaFetra, had been eyeing the property for years. LaFetra is a preservationist and architecture restorer as well as a movie producer of horror films such as Stag Night and Night train.
Due to reduced platform capacity at Birmingham SnowHill, Chiltern services arriving from Marylebone, were sent ECS upto Langley Green on the Stourbridge line, and after reversing, held in Rood End Sidings before returning to Snow Hill.
This Special working, the 0804 ex Marylebone via Aylesbury, is seen approaching Langley Green.
1 Aug 2005
"Reduce dai cessi di Messina, dalle casbah di Catania,
così, trascino con me la morte nella vita".
P.P.Pasolini
Road Traffic Motorcycle Officer dealing with an accident. The motorcycle is a BMW R80RT.
During the mid-80’s significant amounts of new legislation were introduced which resulted in an extensive in-force training programme. Part of this legislation was Part III of the Transport Act 1982. This legislation provided for the extension of the fixed penalty ticket system which had previously been used to enforce parking restrictions. From 1st October 1986, the numbers of offences falling within the bounds of the scheme was increased from 14 to 200, with the intention of reducing the number of minor traffic offences dealt with by the Magistrates Courts. All uniformed officers up to the rank of Inspector underwent training and were expected to be fully conversant with the new methods.
A vehicle rectification scheme was also introduced. The scheme which was rolled out nationally, enabled a driver to have a defect on his vehicle put right by a recognised repairer within 14 days of the offence, and so avoid the need for prosecution. Within Bedfordshire 467 notices were issued in the first three months, with 75% of the drivers complying with the requirements of the scheme.
At Bedfordshire Police our aim is "fighting crime, protecting the public."
We cover 477 square miles, serve a population of around 550,000 and employ in the region of 1,260 Police Officers, 950 police staff and 120 Police Community Support Officers (PCSOs). For more details about the force, visit our website www.bedfordshire.police.uk
This is why I wanted to go on this tour, a trip down the freight only branch to the old refinery and container sites on the peninsular.
I have been down on at least two occasions to snap tours on this line, and now it was my turn.
Sadly, due to a bridge being inspected at Numhead and now no loco-hauled trains can go over it, this meant that the morning visit to Grain was now late in the afternoon, just as the sun was setting.
Not much to see there now, and the proposed trip beyond this point was apparently cancelled as the track beyond was found to be in too bad condition. So, this is as far as we went, before reversing and going back towards London as darkness fell.
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The Hundred of Hoo Railway is a railway line in Kent, England, following the North Kent Line from Gravesend before diverging at Hoo Junction near Shorne Marshes and continuing in an easterly direction across the Hoo Peninsula, passing near the villages of Cooling, High Halstow, Cliffe and Stoke before reaching the Isle of Grain and the container port on its eastern tip, Thamesport. There used to be a short branch line leading from Stoke Junction to the coastal town of Allhallows but this closed from 4 December 1961, the same date on which the Hundred of Hoo line was closed to passenger services.
The first authorisation to construct a railway on the Hoo Peninsula was obtained by a group of local businessmen who sponsored the passing of the North Kent Railway Extension Railway Act in 1865 which provided for the construction of a branch line leaving the South Eastern Railway's Gravesend - Strood line near Shorne Marshes. The line would head eastwards across land north of Cliffe to reach Allhallows, continuing to the Isle of Grain. However, the major railway companies operating in the area, South Eastern Railway (SER) and the London, Chatham and Dover Railway (LCDR) were not interested in the project and as a result it failed to secure the necessary funding.
The opening of Queenborough railway station on 15 May 1876 by the LCDR which offered a sea link to the Dutch town of Flushing prompted the SER to investigate possibilities for a rival link to the continent. On 16 April 1878 the SER's engineer, Francis Brady, reported back to his employer on the feasibility of constructing a railway from a point near Gravesend and the North Kent Line to the village of Stoke, a distance of 9 miles. The estimated cost was £72,000. A 5% return was projected, the belief being that Gravesend's proximity to London would make it a more desirable outlet for the distribution of goods intended for the Kent area, rather than the LCDR's Chatham station.
The Hundred of Hoo Railway Company was therefore formed and a second authorisation for the line obtained in the form of the Hundred of Hoo Railway Act which received royal assent on 21 July 1879.
Seizing the opportunity to provide a sea outlet for goods to Europe, the SER announced its intention to open a new port on the Isle of Grain with a service to Belgium. This new service would compete with the LCDR's own Queenborough and Sheerness outlets. The SER was hopeful that its service would be preferred over that of the LCDR, the proposed route from Charing Cross to the new port was 40 miles, some 12 miles less than the LCDR's Victoria to Queenborough or Sheerness service.
The Hundred of Hoo Railway (Extension) Act was passed by the House of Lords on 14 July 1880 authorising an extension of 3 miles from Stoke to the new Victoria Port where a pier would be constructed. Following a call for tenders, the quotation of a certain Thomas A. Walker was accepted, he having proposed £14,421 for the railway extension (including a bridge over Higham Canal) and £18,953 for the pier. The Railway Company was absorbed into SER in August 1880.
By 1906 it had become clear that Port Victoria would not develop into a major continental sea port and the South Eastern and Chatham Railway (SECR) began to look for new opportunities to bring in revenue. In July of that year seven wooden halts were constructed: Milton Road, Milton Range, Denton, Uralite, Beluncle, Middle Stoke and Grain Crossing. Uralite halt was named after the nearby British Uralite plc complex which had opened in 1899 and manufactured drainage pipes from wet asbestos paste. On 1 May 1915, the little-used Milton Road Halt was closed. The branch line to Allhallows-on-sea was opened on 16 May 1932 followed on 17 July 1932 by opening of another halt at Stoke Junction. A new station opened at Grain on 3 September 1951, replacing Grain Crossing Halt, which closed to rail traffic on 11 July 1951 and passengers on 3 September 1951 - a bus service being provided between those dates.
Port Victoria station was located at the head of the 400 ft (122 m) long pier. Ships of up to 18 ft (5.49 m) draught were able to draw-up alongside to take passengers and goods, irrespective of the tides, thanks to the pier's deep water front. A 'temporary' hotel was constructed near the pier at a cost of £1,900.
The station became popular with the Royal Family because it was secluded with no roads leading to the port. Both the Royal Train and the Royal Yacht were regular visitors to the line.
Following the merger of the SER and LCDR in 1899, Port Victoria found itself firmly in second place behind Queenborough for traffic to the continent. It was only when Queenborough was unavailable that Port Victoria saw regular sustained use. This was the case when a fire caused serious damage to Queenborough on 19 July 1900 and services were diverted via Port Victoria for the best part of the next three years - the busiest period in its history.
Following the outbreak of the First World War, the Admiralty took over Port Victoria on 11 August 1914 at a rent of £200 per annum for a lease of 14 years. A siding to Yantlet Creek was laid and artillery testing was carried out there. The Royal Naval Air Service took over the Royal Corinthian Yacht Club's headquarters which were located near the pier.
As the popularity of the new extension to Allhallows, opened in 1932, began to grow, the further decline of Port Victoria became ever more pronounced. During the 1930s, it saw only two trains per day, mainly for the workmen at the refineries on the Isle of Grain - the Medway Oil and Storage Company had been based at Elphinstone Point at the entrance to Colemouth Creek since 1923. Nevertheless, the Flushing Night Mail continued to dock at the port.
In 1932 further concerns about the stability of the pier led to the buffer being brought further forward so that only 93 ft (28 m) of railway covered the 400 ft (120 m) pier. The station was replaced the same year by a modest structure at a cost of £395. The following year the old station buildings on the pier were demolished and new fencing was erected to create a gangway on the pier in order to provide access to the navigation lights. The 1930s also saw the demolition of the old Royal Corinthian Yacht Club.
The end finally came in 1941 when its seaward end (measuring some 516 ft or 157 m) was demolished and sold for scrap to the Admiralty for £841 5s. Only a short length at the shore end now remained. Both Port Victoria Station and the previous station, Grain Crossing Halt, closed to rail traffic (but not passengers) on 11 June 1951. A new station, called "Grain", which became the line's terminus, was constructed in their place. The Port Victoria Hotel was one of the last pier buildings to be swept away in 1951.
With the failure of Port Victoria to become the valuable European seaport that had been expected, alternative means of increasing the revenue from the line were sought. Such an opportunity seemed to present itself in the early 1920s with the popularity of seaside resorts as holiday destinations for middle and working-class families with the financial means to take an annual holiday or weekend breaks. Resorts such as Brighton, Torquay and Blackpool had long been popular with seasiders since the mid-19th century, but it was only with the arrival of the railway that factory workers in London could enjoy the privileges previously reserved for the richer classes and use their free weekends to escape from their urban environment.
The Southern Railway (SR), which had taken over the SECR's activities in 1923 following the grouping ordered by the Railways Act 1921, sought to profit from this new market by offering a seaside destination within easy reach of London which would rival the London, Midland and Scottish Railway's line to Southend-on-Sea. The small village of Allhallows, population 261 in the 1880s, was identified as the only feasible location for a new seaside resort in North Kent - Herne Bay being judged too far from London and Leysdown-on-Sea on the Isle of Sheppey not having a direct rail service.
The ceremonial opening of the extension took place on Whit Saturday 14 May 1932 when 700 day-trippers made the journey to Allhallows on SECR R1 Class 0-4-4T No. 380, a special train laid on from London. The first passenger trains ran on the following bank holiday Monday, 16 May, with local trains starting from and returning to Gravesend Central. Cheap day return tickets from Charing Cross were offered at 5s 3d - the cheapest ticket to a Kentish seaside resort. To coincide with the opening of the new connection, other parts of the line were upgraded. At Stoke Junction, where the line to Allhallows branched off, a new halt was opened on 17 July 1932. At Cliffe and Sharnal Street, platforms were constructed, whilst at Uralite, High Halstow, Beluncle and Middle Stoke halts, concrete platforms replaced the timber ones.
Two daily express services from Allhallows to Charing Cross were laid on at 7.36am and 8.28am, returning in the early evenings on weekdays and at midday on Saturdays, as if to demonstrate the village's potential as a commuter hub. The services were hardly used, the envisaged commuter town not having yet been constructed, and the SR ran them until September, planning to re-introduce them permanently when the town was ready.
The line became increasingly popular for daytrips: on Sundays during July, August and September 1934 alone, 72,557 passengers used the line, compared with 62,120 for the same period in 1933. On Bank Holiday Sunday 5 August 1934, over 9,500 passengers made the journey to and from Allhallows. It became necessary to double the line between Allhallows and Stoke Junction, the single platform at Allhallows becoming an island with an extended platform canopy. The platform at Allhallows could accommodate ten-coach trains, and goods facilities were provided in the shape of goods sidings, a large goods shed and a turntable - none of which saw much use.
By 1939 between ten and twelve trains were laid on each way on weekdays from Gravesend, and there was an excursion from Maze Hill in August. On Sundays, seven trains were provided, with six extra during the peak holiday season.
Allhallows' popularity continued up until the outbreak of the Second World War, with 12 trains making the journey to and from Gravesend during weekdays while extra services were laid on for Sundays - 14 down and 11 up. At this time the SR considered electrification of the entire Hundred of Hoo line but ultimately decided against it. Looking back now, there is now little doubt that, had this been done, Allhallows would finally have developed into the resort and/or commuter town that had been expected.
In the frugal years that followed the end of the war, Allhallows, like Leysdown-on-Sea, began to experience lean times as passenger numbers fell. Allhallows with its single Charringtons pub, concrete road, two small refreshment stands (closed in winter) and block of four small shops (which never saw any real use and were eventually bricked up) was no match for Brighton, the attractions of which could be enjoyed by rail for an extra 1s 9d when compared to the price of an Allhallows ticket (then 5s 9d). In an attempt to stem losses, the new operator, British Railways (Southern Region) (BR), misguidedly tried out an ACV lightweight diesel railcar in late 1953, its noise and general lack of comfort probably serving however to drive away more passengers.
In the February 1954 edition of Trains Illustrated, T.J. Norris noted that many of the trains from Allhallows carried a score or so of passengers, most of whom went only as far as Cliffe. Whilst Summer and bank holidays saw some patronage of the line - an excursion train from London ran three days each week, with extra trains on Sundays and bank holidays, Winter presented a different picture with trains continuing beyond Sharnal Street being almost completely empty.
Nevertheless, BR still tried to promote the area for holiday-makers and potential residents as its Holiday Haunts guide for 1955 demonstrates: "[t]he open fields, the views, the sands and the safe bathing attract may day and weekend visitors. Undoubtedly, Allhallows has a future; roads have been laid out and it is certain that the place will develop as a pleasant, rural type of resort."
By 1955 eleven trains ran each way on weekdays, with twelve down and thirteen up on Saturdays and thirteen up and down on Sundays. In 1957, the line between Stoke Junction and Allhallows was reduced to a single track and in 1959, the Hundred of Hoo line was excluded from the Kent Coast electrification programme which saw the North Kent Line electrified.
In Winter 1959/60, against a background of a continuing drop in passenger numbers, a study was undertaken to determine the actual numbers using the line and the savings to be made by closing it to passenger traffic. The results showed that 321 passengers per day were using the Allhallows line to travel to and from Gravesend, and that a saving of £25,500 per year would be made, were the line closed.
In March 1960 the proposed withdrawal of passenger services was announced, the main line from Gravesend to Grain remaining unaffected by the changes. The closure proposal was rejected by the South Eastern Area Transport Users Consultative Committee, whose consent was required in accordance with the Transport Act 1947, on the basis that replacement bus services would be inadequate. A new proposal was made by BR a few months later, which it backed up with new figures showing that passenger numbers had further declined since Winter 1959/60 and that savings would even higher - £43,324 per annum.
The Mall is slowly reopening locally. While some stores opened with the mall in late May, others have yet to turn the lights on and open the gates. Regulations encourage masks in stores, six foot social distancing, and reduced business hours. The mall currently closes at 7.
dec·i·mate
Verb:
1.Kill, destroy, or remove a large percentage of.
2.Drastically reduce the strength or effectiveness of (something): "plant viruses that can decimate yields".
...the non-durable goods stock around here.
Still plenty to go, despite the size of the pie.
Pleasant problem though...
camera > DeliuxTO72cp (homemade pinhole, 6x12 curved plane, PVC)
film > Kodak Ektar 100
exposure > 7sec.
development > Tetenal Colortec C41 (30 °C)
film scanned > Epson V600 (1200dpi, reduced and framed)
Hecha con la X-A1 + Sigma Mini-Wide II 28mm 2.8
-----------------------------------------
En la foto:
-Super-Takumar 55mm 1.8 + adaptador M42 to EOS
-Zuiko OM 24mm 2.8 + adaptador OM to EOS
-Sigma Super-Wide II 24mm 2.8 + adaptador PK to EOS
-Focal reducer EOS to FX
-Fuji X-E1
Images derived from photos of dollar store items using Photoshop's Generative Fill at reduced opacity
This sign tickled my funny bone as it warns pedestrians to slow down as they approach the men at work.
I asked the traffic ontroller on duty how many steps I was allowed to take each minute. He smiled and gave me the thumbs up.
Weatherspoons in Bishops Stortford , had their "mixed grill" on special offer today .
Seemed churlish not to partake !
The Port Jackson , Bishops Stortford , Hertfordshire
Bank Holiday Monday 28th-August-2017 .
Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 114 families have been recorded by taxonomists. However, there has been dissension within the scientific community as to how all these families should be classified, as evidenced by the over 20 different classifications that have been proposed since 1900.
Anatomically, spiders differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax and abdomen, and joined by a small, cylindrical pedicel. Unlike insects, spiders do not have antennae. In all except the most primitive group, the Mesothelae, spiders have the most centralized nervous systems of all arthropods, as all their ganglia are fused into one mass in the cephalothorax. Unlike most arthropods, spiders have no extensor muscles in their limbs and instead extend them by hydraulic pressure.
Their abdomens bear appendages that have been modified into spinnerets that extrude silk from up to six types of glands. Spider webs vary widely in size, shape and the amount of sticky thread used. It now appears that the spiral orb web may be one of the earliest forms, and spiders that produce tangled cobwebs are more abundant and diverse than orb-web spiders. Spider-like arachnids with silk-producing spigots appeared in the Devonian period about 386 million years ago, but these animals apparently lacked spinnerets. True spiders have been found in Carboniferous rocks from 318 to 299 million years ago, and are very similar to the most primitive surviving suborder, the Mesothelae. The main groups of modern spiders, Mygalomorphae and Araneomorphae, first appeared in the Triassic period, before 200 million years ago.
A herbivorous species, Bagheera kiplingi, was described in 2008,[5] but all other known species are predators, mostly preying on insects and on other spiders, although a few large species also take birds and lizards. Spiders use a wide range of strategies to capture prey: trapping it in sticky webs, lassoing it with sticky bolas, mimicking the prey to avoid detection, or running it down. Most detect prey mainly by sensing vibrations, but the active hunters have acute vision, and hunters of the genus Portia show signs of intelligence in their choice of tactics and ability to develop new ones. Spiders' guts are too narrow to take solids, and they liquefy their food by flooding it with digestive enzymes and grinding it with the bases of their pedipalps, as they do not have true jaws.
Male spiders identify themselves by a variety of complex courtship rituals to avoid being eaten by the females. Males of most species survive a few matings, limited mainly by their short life spans. Females weave silk egg-cases, each of which may contain hundreds of eggs. Females of many species care for their young, for example by carrying them around or by sharing food with them. A minority of species are social, building communal webs that may house anywhere from a few to 50,000 individuals. Social behavior ranges from precarious toleration, as in the widow spiders, to co-operative hunting and food-sharing. Although most spiders live for at most two years, tarantulas and other mygalomorph spiders can live up to 25 years in captivity.
While the venom of a few species is dangerous to humans, scientists are now researching the use of spider venom in medicine and as non-polluting pesticides. Spider silk provides a combination of lightness, strength and elasticity that is superior to that of synthetic materials, and spider silk genes have been inserted into mammals and plants to see if these can be used as silk factories. As a result of their wide range of behaviors, spiders have become common symbols in art and mythology symbolizing various combinations of patience, cruelty and creative powers. An abnormal fear of spiders is called arachnophobia.
BODY PLAN
Spiders are chelicerates and therefore arthropods.[6] As arthropods they have: segmented bodies with jointed limbs, all covered in a cuticle made of chitin and proteins; heads that are composed of several segments that fuse during the development of the embryo. Being chelicerates, their bodies consist of two tagmata, sets of segments that serve similar functions: the foremost one, called the cephalothorax or prosoma, is a complete fusion of the segments that in an insect would form two separate tagmata, the head and thorax; the rear tagma is called the abdomen or opisthosoma. In spiders, the cephalothorax and abdomen are connected by a small cylindrical section, the pedicel. The pattern of segment fusion that forms chelicerates' heads is unique among arthropods, and what would normally be the first head segment disappears at an early stage of development, so that chelicerates lack the antennae typical of most arthropods. In fact, chelicerates' only appendages ahead of the mouth are a pair of chelicerae, and they lack anything that would function directly as "jaws". The first appendages behind the mouth are called pedipalps, and serve different functions within different groups of chelicerates.
Spiders and scorpions are members of one chelicerate group, the arachnids. Scorpions' chelicerae have three sections and are used in feeding. Spiders' chelicerae have two sections and terminate in fangs that are generally venomous, and fold away behind the upper sections while not in use. The upper sections generally have thick "beards" that filter solid lumps out of their food, as spiders can take only liquid food.[8] Scorpions' pedipalps generally form large claws for capturing prey, while those of spiders are fairly small appendages whose bases also act as an extension of the mouth; in addition, those of male spiders have enlarged last sections used for sperm transfer.
In spiders, the cephalothorax and abdomen are joined by a small, cylindrical pedicel, which enables the abdomen to move independently when producing silk. The upper surface of the cephalothorax is covered by a single, convex carapace, while the underside is covered by two rather flat plates. The abdomen is soft and egg-shaped. It shows no sign of segmentation, except that the primitive Mesothelae, whose living members are the Liphistiidae, have segmented plates on the upper surface.
CIRCULATION AND RESPIRATION
Like other arthropods, spiders are coelomates in which the coelom is reduced to small areas round the reproductive and excretory systems. Its place is largely taken by a hemocoel, a cavity that runs most of the length of the body and through which blood flows. The heart is a tube in the upper part of the body, with a few ostia that act as non-return valves allowing blood to enter the heart from the hemocoel but prevent it from leaving before it reaches the front end. However, in spiders, it occupies only the upper part of the abdomen, and blood is discharged into the hemocoel by one artery that opens at the rear end of the abdomen and by branching arteries that pass through the pedicle and open into several parts of the cephalothorax. Hence spiders have open circulatory systems. The blood of many spiders that have book lungs contains the respiratory pigment hemocyanin to make oxygen transport more efficient.
Spiders have developed several different respiratory anatomies, based on book lungs, a tracheal system, or both. Mygalomorph and Mesothelae spiders have two pairs of book lungs filled with haemolymph, where openings on the ventral surface of the abdomen allow air to enter and diffuse oxygen. This is also the case for some basal araneomorph spiders, like the family Hypochilidae, but the remaining members of this group have just the anterior pair of book lungs intact while the posterior pair of breathing organs are partly or fully modified into tracheae, through which oxygen is diffused into the haemolymph or directly to the tissue and organs. The trachea system has most likely evolved in small ancestors to help resist desiccation. The trachea were originally connected to the surroundings through a pair of openings called spiracles, but in the majority of spiders this pair of spiracles has fused into a single one in the middle, and moved backwards close to the spinnerets. Spiders that have tracheae generally have higher metabolic rates and better water conservation. Spiders are ectotherms, so environmental temperatures affect their activity.
FEEDING, DIGESTION AND EXCRETION
Uniquely among chelicerates, the final sections of spiders' chelicerae are fangs, and the great majority of spiders can use them to inject venom into prey from venom glands in the roots of the chelicerae. The family Uloboridae has lost its venom glands, and kills its prey with silk instead. Like most arachnids, including scorpions, spiders have a narrow gut that can only cope with liquid food and spiders have two sets of filters to keep solids out. They use one of two different systems of external digestion. Some pump digestive enzymes from the midgut into the prey and then suck the liquified tissues of the prey into the gut, eventually leaving behind the empty husk of the prey. Others grind the prey to pulp using the chelicerae and the bases of the pedipalps, while flooding it with enzymes; in these species, the chelicerae and the bases of the pedipalps form a preoral cavity that holds the food they are processing.
The stomach in the cephalothorax acts as a pump that sends the food deeper into the digestive system. The mid gut bears many digestive ceca, compartments with no other exit, that extract nutrients from the food; most are in the abdomen, which is dominated by the digestive system, but a few are found in the cephalothorax.
Most spiders convert nitrogenous waste products into uric acid, which can be excreted as a dry material. Malphigian tubules ("little tubes") extract these wastes from the blood in the hemocoel and dump them into the cloacal chamber, from which they are expelled through the anus. Production of uric acid and its removal via Malphigian tubules are a water-conserving feature that has evolved independently in several arthropod lineages that can live far away from water, for example the tubules of insects and arachnids develop from completely different parts of the embryo. However, a few primitive spiders, the sub-order Mesothelae and infra-order Mygalomorphae, retain the ancestral arthropod nephridia ("little kidneys"), which use large amounts of water to excrete nitrogenous waste products as ammonia.
CENTRAL NERVOUS SYSTEM
The basic arthropod central nervous system consists of a pair of nerve cords running below the gut, with paired ganglia as local control centers in all segments; a brain formed by fusion of the ganglia for the head segments ahead of and behind the mouth, so that the esophagus is encircled by this conglomeration of ganglia. Except for the primitive Mesothelae, of which the Liphistiidae are the sole surviving family, spiders have the much more centralized nervous system that is typical of arachnids: all the ganglia of all segments behind the esophagus are fused, so that the cephalothorax is largely filled with nervous tissue and there are no ganglia in the abdomen; in the Mesothelae, the ganglia of the abdomen and the rear part of the cephalothorax remain unfused.
Despite the relatively small central nervous system, some spiders (like Portia) exhibit complex behaviour, including the ability to use a trial-and-error approach.
Sense organs
EYES
Most spiders have four pairs of eyes on the top-front area of the cephalothorax, arranged in patterns that vary from one family to another. The pair at the front are of the type called pigment-cup ocelli ("little eyes"), which in most arthropods are only capable of detecting the direction from which light is coming, using the shadow cast by the walls of the cup. However, the main eyes at the front of spiders' heads are pigment-cup ocelli that are capable of forming images. The other eyes are thought to be derived from the compound eyes of the ancestral chelicerates, but no longer have the separate facets typical of compound eyes. Unlike the main eyes, in many spiders these secondary eyes detect light reflected from a reflective tapetum lucidum, and wolf spiders can be spotted by torch light reflected from the tapeta. On the other hand, jumping spiders' secondary eyes have no tapeta. Some jumping spiders' visual acuity exceeds by a factor of ten that of dragonflies, which have by far the best vision among insects; in fact the human eye is only about five times sharper than a jumping spider's. They achieve this by a telephoto-like series of lenses, a four-layer retina and the ability to swivel their eyes and integrate images from different stages in the scan. The downside is that the scanning and integrating processes are relatively slow.
There are spiders with a reduced number of eyes, of these those with six-eyes are the most numerous and are missing a pair of eyes on the anterior median line, others species have four-eyes and some just two. Cave dwelling species have no eyes, or possess vestigial eyes incapable of sight.
OTHER SENSES
As with other arthropods, spiders' cuticles would block out information about the outside world, except that they are penetrated by many sensors or connections from sensors to the nervous system. In fact, spiders and other arthropods have modified their cuticles into elaborate arrays of sensors. Various touch sensors, mostly bristles called setae, respond to different levels of force, from strong contact to very weak air currents. Chemical sensors provide equivalents of taste and smell, often by means of setae. Pedipalps carry a large number of such setae sensitive to contact chemicals and air-borne smells, such as female pheromones. Spiders also have in the joints of their limbs slit sensillae that detect forces and vibrations. In web-building spiders, all these mechanical and chemical sensors are more important than the eyes, while the eyes are most important to spiders that hunt actively.
Like most arthropods, spiders lack balance and acceleration sensors and rely on their eyes to tell them which way is up. Arthropods' proprioceptors, sensors that report the force exerted by muscles and the degree of bending in the body and joints, are well understood. On the other hand, little is known about what other internal sensors spiders or other arthropods may have.
LOCMOTION
Each of the eight legs of a spider consists of seven distinct parts. The part closest to and attaching the leg to the cephalothorax is the coxa; the next segment is the short trochanter that works as a hinge for the following long segment, the femur; next is the spider's knee, the patella, which acts as the hinge for the tibia; the metatarsus is next, and it connects the tibia to the tarsus (which may be thought of as a foot of sorts); the tarsus ends in a claw made up of either two or three points, depending on the family to which the spider belongs. Although all arthropods use muscles attached to the inside of the exoskeleton to flex their limbs, spiders and a few other groups still use hydraulic pressure to extend them, a system inherited from their pre-arthropod ancestors. The only extensor muscles in spider legs are located in the three hip joints (bordering the coxa and the trochanter). As a result, a spider with a punctured cephalothorax cannot extend its legs, and the legs of dead spiders curl up. Spiders can generate pressures up to eight times their resting level to extend their legs, and jumping spiders can jump up to 50 times their own length by suddenly increasing the blood pressure in the third or fourth pair of legs. Although larger spiders use hydraulics to straighten their legs, unlike smaller jumping spiders they depend on their flexor muscles to generate the propulsive force for their jumps.
Most spiders that hunt actively, rather than relying on webs, have dense tufts of fine hairs between the paired claws at the tips of their legs. These tufts, known as scopulae, consist of bristles whose ends are split into as many as 1,000 branches, and enable spiders with scopulae to walk up vertical glass and upside down on ceilings. It appears that scopulae get their grip from contact with extremely thin layers of water on surfaces.[8] Spiders, like most other arachnids, keep at least four legs on the surface while walking or running.
SILK PRODUCTION
The abdomen has no appendages except those that have been modified to form one to four (usually three) pairs of short, movable spinnerets, which emit silk. Each spinneret has many spigots, each of which is connected to one silk gland. There are at least six types of silk gland, each producing a different type of silk.
Silk is mainly composed of a protein very similar to that used in insect silk. It is initially a liquid, and hardens not by exposure to air but as a result of being drawn out, which changes the internal structure of the protein. It is similar in tensile strength to nylon and biological materials such as chitin, collagen and cellulose, but is much more elastic. In other words, it can stretch much further before breaking or losing shape.
Some spiders have a cribellum, a modified spinneret with up to 40,000 spigots, each of which produces a single very fine fiber. The fibers are pulled out by the calamistrum, a comb-like set of bristles on the jointed tip of the cribellum, and combined into a composite woolly thread that is very effective in snagging the bristles of insects. The earliest spiders had cribella, which produced the first silk capable of capturing insects, before spiders developed silk coated with sticky droplets. However, most modern groups of spiders have lost the cribellum.
Tarantulas also have silk glands in their feet.
Even species that do not build webs to catch prey use silk in several ways: as wrappers for sperm and for fertilized eggs; as a "safety rope"; for nest-building; and as "parachutes" by the young of some species.
REPRODUCTION AND LIFE CYCLE
Spiders reproduce sexually and fertilization is internal but indirect, in other words the sperm is not inserted into the female's body by the male's genitals but by an intermediate stage. Unlike many land-living arthropods, male spiders do not produce ready-made spermatophores (packages of sperm), but spin small sperm webs on to which they ejaculate and then transfer the sperm to special syringe-like structures, palpal bulbs or palpal organs, borne on the tips of the pedipalps of mature males. When a male detects signs of a female nearby he checks whether she is of the same species and whether she is ready to mate; for example in species that produce webs or "safety ropes", the male can identify the species and sex of these objects by "smell".
Spiders generally use elaborate courtship rituals to prevent the large females from eating the small males before fertilization, except where the male is so much smaller that he is not worth eating. In web-weaving species, precise patterns of vibrations in the web are a major part of the rituals, while patterns of touches on the female's body are important in many spiders that hunt actively, and may "hypnotize" the female. Gestures and dances by the male are important for jumping spiders, which have excellent eyesight. If courtship is successful, the male injects his sperm from the palpal bulbs into the female's genital opening, known as the epigyne, on the underside of her abdomen. Female's reproductive tracts vary from simple tubes to systems that include seminal receptacles in which females store sperm and release it when they are ready.
Males of the genus Tidarren amputate one of their palps before maturation and enter adult life with one palp only. The palps are 20% of male's body mass in this species, and detaching one of the two improves mobility. In the Yemeni species Tidarren argo, the remaining palp is then torn off by the female. The separated palp remains attached to the female's epigynum for about four hours and apparently continues to function independently. In the meantime, the female feeds on the palpless male. In over 60% of cases, the female of the Australian redback spider kills and eats the male after it inserts its second palp into the female's genital opening; in fact, the males co-operate by trying to impale themselves on the females' fangs. Observation shows that most male redbacks never get an opportunity to mate, and the "lucky" ones increase the likely number of offspring by ensuring that the females are well-fed. However, males of most species survive a few matings, limited mainly by their short life spans. Some even live for a while in their mates' webs.
Females lay up to 3,000 eggs in one or more silk egg sacs, which maintain a fairly constant humidity level. In some species, the females die afterwards, but females of other species protect the sacs by attaching them to their webs, hiding them in nests, carrying them in the chelicerae or attaching them to the spinnerets and dragging them along.
Baby spiders pass all their larval stages inside the egg and hatch as spiderlings, very small and sexually immature but similar in shape to adults. Some spiders care for their young, for example a wolf spider's brood cling to rough bristles on the mother's back, and females of some species respond to the "begging" behaviour of their young by giving them their prey, provided it is no longer struggling, or even regurgitate food.
Like other arthropods, spiders have to molt to grow as their cuticle ("skin") cannot stretch. In some species males mate with newly molted females, which are too weak to be dangerous to the males. Most spiders live for only one to two years, although some tarantulas can live in captivity for over 20 years.
SIZE
Spiders occur in a large range of sizes. The smallest, Patu digua from Colombia, are less than 0.37 mm in body length. The largest and heaviest spiders occur among tarantulas, which can have body lengths up to 90 mm and leg spans up to 250 mm.
COLORATION
Only three classes of pigment (ommochromes, bilins and guanine) have been identified in spiders, although other pigments have been detected but not yet characterized. Melanins, carotenoids and pterins, very common in other animals, are apparently absent. In some species, the exocuticle of the legs and prosoma is modified by a tanning process, resulting in brown coloration. Bilins are found, for example, in Micrommata virescens, resulting in its green color. Guanine is responsible for the white markings of the European garden spider Araneus diadematus. It is in many species accumulated in specialized cells called guanocytes. In genera such as Tetragnatha, Leucauge, Argyrodes or Theridiosoma, guanine creates their silvery appearance. While guanine is originally an end-product of protein metabolism, its excretion can be blocked in spiders, leading to an increase in its storage. Structural colors occur in some species, which are the result of the diffraction, scattering or interference of light, for example by modified setae or scales. The white prosoma of Argiope results from hairs reflecting the light, Lycosa and Josa both have areas of modified cuticle that act as light reflectors.
ECOGOGY AND BEHAVIOR
NON-PREDATORY FEEDING
Although spiders are generally regarded as predatory, the jumping spider Bagheera kiplingi gets over 90% of its food from fairly solid plant material produced by acacias as part of a mutually beneficial relationship with a species of ant.
Juveniles of some spiders in the families Anyphaenidae, Corinnidae, Clubionidae, Thomisidae and Salticidae feed on plant nectar. Laboratory studies show that they do so deliberately and over extended periods, and periodically clean themselves while feeding. These spiders also prefer sugar solutions to plain water, which indicates that they are seeking nutrients. Since many spiders are nocturnal, the extent of nectar consumption by spiders may have been underestimated. Nectar contains amino acids, lipids, vitamins and minerals in addition to sugars, and studies have shown that other spider species live longer when nectar is available. Feeding on nectar avoids the risks of struggles with prey, and the costs of producing venom and digestive enzymes.
Various species are known to feed on dead arthropods (scavenging), web silk, and their own shed exoskeletons. Pollen caught in webs may also be eaten, and studies have shown that young spiders have a better chance of survival if they have the opportunity to eat pollen. In captivity, several spider species are also known to feed on bananas, marmalade, milk, egg yolk and sausages.
METHODS OF CAPTURING PREY
The best-known method of prey capture is by means of sticky webs. Varying placement of webs allows different species of spider to trap different insects in the same area, for example flat horizontal webs trap insects that fly up from vegetation underneath while flat vertical webs trap insects in horizontal flight. Web-building spiders have poor vision, but are extremely sensitive to vibrations.
Females of the water spider Argyroneta aquatica build underwater "diving bell" webs that they fill with air and use for digesting prey, molting, mating and raising offspring. They live almost entirely within the bells, darting out to catch prey animals that touch the bell or the threads that anchor it. A few spiders use the surfaces of lakes and ponds as "webs", detecting trapped insects by the vibrations that these cause while struggling.
Net-casting spiders weave only small webs, but then manipulate them to trap prey. Those of the genus Hyptiotes and the family Theridiosomatidae stretch their webs and then release them when prey strike them, but do not actively move their webs. Those of the family Deinopidae weave even smaller webs, hold them outstretched between their first two pairs of legs, and lunge and push the webs as much as twice their own body length to trap prey, and this move may increase the webs' area by a factor of up to ten. Experiments have shown that Deinopis spinosus has two different techniques for trapping prey: backwards strikes to catch flying insects, whose vibrations it detects; and forward strikes to catch ground-walking prey that it sees. These two techniques have also been observed in other deinopids. Walking insects form most of the prey of most deinopids, but one population of Deinopis subrufa appears to live mainly on tipulid flies that they catch with the backwards strike.
Mature female bolas spiders of the genus Mastophora build "webs" that consist of only a single "trapeze line", which they patrol. They also construct a bolas made of a single thread, tipped with a large ball of very wet sticky silk. They emit chemicals that resemble the pheromones of moths, and then swing the bolas at the moths. Although they miss on about 50% of strikes, they catch about the same weight of insects per night as web-weaving spiders of similar size. The spiders eat the bolas if they have not made a kill in about 30 minutes, rest for a while, and then make new bolas. Juveniles and adult males are much smaller and do not make bolas. Instead they release different pheromones that attract moth flies, and catch them with their front pairs of legs.
The primitive Liphistiidae, the "trapdoor spiders" of the family Ctenizidae and many tarantulas are ambush predators that lurk in burrows, often closed by trapdoors and often surrounded by networks of silk threads that alert these spiders to the presence of prey. Other ambush predators do without such aids, including many crab spiders, and a few species that prey on bees, which see ultraviolet, can adjust their ultraviolet reflectance to match the flowers in which they are lurking. Wolf spiders, jumping spiders, fishing spiders and some crab spiders capture prey by chasing it, and rely mainly on vision to locate prey.Some jumping spiders of the genus Portia hunt other spiders in ways that seem intelligent, outflanking their victims or luring them from their webs. Laboratory studies show that Portia's instinctive tactics are only starting points for a trial-and-error approach from which these spiders learn very quickly how to overcome new prey species. However, they seem to be relatively slow "thinkers", which is not surprising, as their brains are vastly smaller than those of mammalian predators.Ant-mimicking spiders face several challenges: they generally develop slimmer abdomens and false "waists" in the cephalothorax to mimic the three distinct regions (tagmata) of an ant's body; they wave the first pair of legs in front of their heads to mimic antennae, which spiders lack, and to conceal the fact that they have eight legs rather than six; they develop large color patches round one pair of eyes to disguise the fact that they generally have eight simple eyes, while ants have two compound eyes; they cover their bodies with reflective hairs to resemble the shiny bodies of ants. In some spider species, males and females mimic different ant species, as female spiders are usually much larger than males. Ant-mimicking spiders also modify their behavior to resemble that of the target species of ant; for example, many adopt a zig-zag pattern of movement, ant-mimicking jumping spiders avoid jumping, and spiders of the genus Synemosyna walk on the outer edges of leaves in the same way as Pseudomyrmex. Ant-mimicry in many spiders and other arthropods may be for protection from predators that hunt by sight, including birds, lizards and spiders. However, several ant-mimicking spiders prey either on ants or on the ants' "livestock", such as aphids. When at rest, the ant-mimicking crab spider Amyciaea does not closely resemble Oecophylla, but while hunting it imitates the behavior of a dying ant to attract worker ants. After a kill, some ant-mimicking spiders hold their victims between themselves and large groups of ants to avoid being attacked.
DEFENSE
There is strong evidence that spiders' coloration is camouflage that helps them to evade their major predators, birds and parasitic wasps, both of which have good color vision. Many spider species are colored so as to merge with their most common backgrounds, and some have disruptive coloration, stripes and blotches that break up their outlines. In a few species, such as the Hawaiian happy-face spider, Theridion grallator, several coloration schemes are present in a ratio that appears to remain constant, and this may make it more difficult for predators to recognize the species. Most spiders are insufficiently dangerous or unpleasant-tasting for warning coloration to offer much benefit. However, a few species with powerful venoms, large jaws or irritant hairs have patches of warning colors, and some actively display these colors when threatened.
Many of the family Theraphosidae, which includes tarantulas and baboon spiders, have urticating hairs on their abdomens and use their legs to flick them at attackers. These hairs are fine setae (bristles) with fragile bases and a row of barbs on the tip. The barbs cause intense irritation but there is no evidence that they carry any kind of venom. A few defend themselves against wasps by including networks of very robust threads in their webs, giving the spider time to flee while the wasps are struggling with the obstacles. The golden wheeling spider, Carparachne aureoflava, of the Namibian desert escapes parasitic wasps by flipping onto its side and cartwheeling down sand dunes.
SOCIAL SPIDERS
A few spider species that build webs live together in large colonies and show social behavior, although not as complex as in social insects. Anelosimus eximius (in the family Theridiidae) can form colonies of up to 50,000 individuals. The genus Anelosimus has a strong tendency towards sociality: all known American species are social, and species in Madagascar are at least somewhat social. Members of other species in the same family but several different genera have independently developed social behavior. For example, although Theridion nigroannulatum belongs to a genus with no other social species, T. nigroannulatum build colonies that may contain several thousand individuals that co-operate in prey capture and share food. Other communal spiders include several Philoponella species (family Uloboridae), Agelena consociata (family Agelenidae) and Mallos gregalis (family Dictynidae). Social predatory spiders need to defend their prey against kleptoparasites ("thieves"), and larger colonies are more successful in this. The herbivorous spider Bagheera kiplingi lives in small colonies which help to protect eggs and spiderlings. Even widow spiders (genus Latrodectus), which are notoriously cannibalistic, have formed small colonies in captivity, sharing webs and feeding together.
WEB TYPES
There is no consistent relationship between the classification of spiders and the types of web they build: species in the same genus may build very similar or significantly different webs. Nor is there much correspondence between spiders' classification and the chemical composition of their silks. Convergent evolution in web construction, in other words use of similar techniques by remotely related species, is rampant. Orb web designs and the spinning behaviors that produce them are the best understood. The basic radial-then-spiral sequence visible in orb webs and the sense of direction required to build them may have been inherited from the common ancestors of most spider groups. However, the majority of spiders build non-orb webs. It used to be thought that the sticky orb web was an evolutionary innovation resulting in the diversification of the Orbiculariae. Now, however, it appears that non-orb spiders are a sub-group that evolved from orb-web spiders, and non-orb spiders have over 40% more species and are four times as abundant as orb-web spiders. Their greater success may be because sphecid wasps, which are often the dominant predators of spiders, much prefer to attack spiders that have flat webs.
ORB WEBS
About half the potential prey that hit orb webs escape. A web has to perform three functions: intercepting the prey (intersection), absorbing its momentum without breaking (stopping), and trapping the prey by entangling it or sticking to it (retention). No single design is best for all prey. For example: wider spacing of lines will increase the web's area and hence its ability to intercept prey, but reduce its stopping power and retention; closer spacing, larger sticky droplets and thicker lines would improve retention, but would make it easier for potential prey to see and avoid the web, at least during the day. However, there are no consistent differences between orb webs built for use during the day and those built for use at night. In fact, there is no simple relationship between orb web design features and the prey they capture, as each orb-weaving species takes a wide range of prey.
The hubs of orb webs, where the spiders lurk, are usually above the center, as the spiders can move downwards faster than upwards. If there is an obvious direction in which the spider can retreat to avoid its own predators, the hub is usually offset towards that direction.
Horizontal orb webs are fairly common, despite being less effective at intercepting and retaining prey and more vulnerable to damage by rain and falling debris. Various researchers have suggested that horizontal webs offer compensating advantages, such as reduced vulnerability to wind damage; reduced visibility to prey flying upwards, because of the back-lighting from the sky; enabling oscillations to catch insects in slow horizontal flight. However, there is no single explanation for the common use of horizontal orb webs.
Spiders often attach highly visible silk bands, called decorations or stabilimenta, to their webs. Field research suggests that webs with more decorative bands captured more prey per hour. However, a laboratory study showed that spiders reduce the building of these decorations if they sense the presence of predators.
There are several unusual variants of orb web, many of them convergently evolved, including: attachment of lines to the surface of water, possibly to trap insects in or on the surface; webs with twigs through their centers, possibly to hide the spiders from predators; "ladder-like" webs that appear most effective in catching moths. However, the significance of many variations is unclear.
In 1973, Skylab 3 took two orb-web spiders into space to test their web-spinning capabilities in zero gravity. At first, both produced rather sloppy webs, but they adapted quickly.
TANGLEWEB SPIDERS (COBWEB SPIDERS)
Members of the family Theridiidae weave irregular, tangled, three-dimensional webs, popularly known as cobwebs. There seems to be an evolutionary trend towards a reduction in the amount of sticky silk used, leading to its total absence in some species. The construction of cobwebs is less stereotyped than that of orb-webs, and may take several days.
OTHER TYPES OF WEBS
The Linyphiidae generally make horizontal but uneven sheets, with tangles of stopping threads above. Insects that hit the stopping threads fall onto the sheet or are shaken onto it by the spider, and are held by sticky threads on the sheet until the spider can attack from below.
EVOLUTION
FOSSIL RECORD
Although the fossil record of spiders is considered poor, almost 1000 species have been described from fossils. Because spiders' bodies are quite soft, the vast majority of fossil spiders have been found preserved in amber. The oldest known amber that contains fossil arthropods dates from 130 million years ago in the Early Cretaceous period. In addition to preserving spiders' anatomy in very fine detail, pieces of amber show spiders mating, killing prey, producing silk and possibly caring for their young. In a few cases, amber has preserved spiders' egg sacs and webs, occasionally with prey attached; the oldest fossil web found so far is 100 million years old. Earlier spider fossils come from a few lagerstätten, places where conditions were exceptionally suited to preserving fairly soft tissues.
The oldest known exclusively terrestrial arachnid is the trigonotarbid Palaeotarbus jerami, from about 420 million years ago in the Silurian period, and had a triangular cephalothorax and segmented abdomen, as well as eight legs and a pair of pedipalps. Attercopus fimbriunguis, from 386 million years ago in the Devonian period, bears the earliest known silk-producing spigots, and was therefore hailed as a spider at the time of its discovery. However, these spigots may have been mounted on the underside of the abdomen rather than on spinnerets, which are modified appendages and whose mobility is important in the building of webs. Hence Attercopus and the similar Permian arachnid Permarachne may not have been true spiders, and probably used silk for lining nests or producing egg-cases rather than for building webs. The largest known fossil spider as of 2011 is the araneid Nephila jurassica, from about 165 million years ago, recorded from Daohuogo, Inner Mongolia in China. Its body length is almost 25 mm.
Several Carboniferous spiders were members of the Mesothelae, a primitive group now represented only by the Liphistiidae. The mesothelid Paleothele montceauensis, from the Late Carboniferous over 299 million years ago, had five spinnerets. Although the Permian period 299 to 251 million years ago saw rapid diversification of flying insects, there are very few fossil spiders from this period.
The main groups of modern spiders, Mygalomorphae and Araneomorphae, first appear in the Triassic well before 200 million years ago. Some Triassic mygalomorphs appear to be members of the family Hexathelidae, whose modern members include the notorious Sydney funnel-web spider, and their spinnerets appear adapted for building funnel-shaped webs to catch jumping insects. Araneomorphae account for the great majority of modern spiders, including those that weave the familiar orb-shaped webs. The Jurassic and Cretaceous periods provide a large number of fossil spiders, including representatives of many modern families.
WIKIPEDIA
This glass reduces rather than magnifies. Cartographers often produced a final map at 50-75 percent of its draft size, and this tool allowed them to visualize how their draft line work would appear at the final size.
equipment: Takahashi FSQ-106ED, reducer QE 0.73x, and Canon EOS 5Dmk2-sp2 by Seo san at ISO 1,600 on Takahashi EM-200 temma 2Jr, autoguided with hiro-design off-axis guider, StarlightXpress Lodestar autoguider, and PHD Guiding
exposure: 5 times x 30 minutes, 3 x 15 min, 4 x 4 min, and 4 x 1 minute
Location: 11,000 feet above sea level near MLO, Mauna Loa Observatory on the shoulder of Mauna Loa in the Big Island, Hawaii
Crafted by Ettore Bugatti, the Type 41 is said to have come about because he took exception to the comments of an English lady who compared his cars unfavourably with those of Rolls-Royce.The prototype had a near 15-litre capacity engine. The production version, its stroke reduced from 150 mm (5.9 in) to 130 mm (5.1 in) had a displacement of 12.7 litres.[3] The engine was built around a single huge block, and at (apx. 4.5 ft (1.4 m) long x 3.5 ft (1.1 m) high), is one of the largest automobile engines ever made, producing 205 to 223 kW (275 to 300 hp). Its eight cylinders, bored to 125 mm (4.9 in) and with a stroke length of 130 mm (5.1 in), each displaced more than the entire engine of the contemporary Type 40 touring car. It had 3 valves per cylinder (two inlet:one exhaust) driven by a centrally positioned single overhead camshaft. Three bearings and only a single custom carburettor was needed. The engine was based on an aero-engine design that had been designed for the French Air Ministry, but never produced in that configuration.The chassis was understandably substantial, with a conventional semi-elliptic leaf spring suspension arrangement at the front. At the rear the forward-facing Bugatti quarter-elliptics were supplemented by a second set facing to the rear. Strangely, for the modern day observer, the aluminium clutch box was attached to the chassis, not to the engine, and the gear box, also in aluminium was attached to the rear axle, so was part of the unsprung mass of the suspension. The reason placing clutch and gearbox at such odd locations was reducing noise, so increasing comfort inside the cars, a difficult problem in those days. On the other hand, in view of the Royale's huge mass, placing the gearbox on the rear axle did not present a driveability problem. Massive brake shoes were mechanically operated via cable controls: the brakes were effective but without servo-assistance required significant muscle power from the driver. The car's cast "Roue Royale" wheels measured 610 mm (24 inches) in diameter. Reflecting some tradition-based fashions of the time, the driver was confronted by a series of knobs of whalebone, while the steering wheel was covered with walnut. A road test performed in 1926 by W.F. Bradley at the request of Ettore Bugatti for the Autocar magazine proved how exquisite chassis construction allowed very good and balanced handling at speed, similar to smaller Bugatti sports cars, despite the car's weight and size. All Royales were individually bodied. The radiator cap was a posed elephant, a sculpture by Ettore's brother Rembrandt Bugatti.
Some Background:
The Space Defense Robot-04-Mk. XIV Destroid Nimrod was an anti-air/heavy artillery mecha, and intended as a replacement for the SDR-04-Mk. XII Phalanx, a Destroid specifically designed for space operations to defend the SDF-1 Macross, along with its sister unit, the cannon-armed ADR-04-Mk. X Destroid Defender.
The Phalanx had been developed in a hurry under the pressure of the raging war against the Zentraedi and suffered, as a consequence, from several disadvantages. For instance, its combat operation capability decreased substantially once the missile ordnance (a total of forty-four 430mm caliber missiles, half of them ready to fire and the rest held in reserve in internal magazines) had been exhausted. To counter this, a few models were modified in the field, e.g. with additional light Gatling guns mounted within the head unit, as well as other variations, but most Phalanx’ remained basically bipedal heavy missile launchers. A sub-variant with improved sensors and missile guidance systems, as well as the ability to deploy the new reflex missiles, the Phalanx Mk. XIII, was also built, but only in small numbers, and it could not overcome the flaws of the original design.
The Nimrod was the attempt to mend these shortcomings after initial combat experience with the type. The so-called SDR-04-Mk. XIV utilized the proven MBR-04 ambulatory system and shared a common hip and leg structure with a wide range of other Destroids. Like the Phalanx, the Nimrod’s newly designed upper body was a simple core structure that neglected any silliness for a weapon composition consisting of missiles, radar, and propulsion system, all mounted on the main rotating body which could be detached from the lower torso for maintenance of in case of emergency.
The Nimrod filled the same tactical niche as the Phalanx but was a more sophisticated design with improved capabilities and a – though limited – secondary close-range combat capability. The radar and sensor suites for target acquisition as well as missile guidance were improved, so that the Nimrod became even suited for air space surveillance and as a guidance/coordination unit for other Destroids. Due to this additional workload, the Nimrod’s crew was expanded by a WSO to two in a tandem cockpit.
The armament remained tailored to medium and long range, but there were some improvements. On the Nimrod, the Phalanx’ bulbous drum-shaped missile magazines gave way to more streamlined 540 mm caliber reflex missile containers, which were carried in staggered clusters of four twin-pods on each shoulder, holding a total of 48 missiles with sixteen of them ready to fire and the rest in reserve. This modification reduced weight and frontal area, and in a case of emergency the missile containers could be jettisoned.
In order to improve the Nimrod’s tactical value after its missiles had been deployed, it was furthermore provided with a secondary close-range combat capability in the form of a pair of particle beam guns. These were integrated into the arms, protected by the missile containers, and these reliable weapons could be effectively used against both air as well as ground targets. Thermal smoke dischargers completed the Nimrod’s defensive measures.
Like the Phalanx and other Destroids, the Nimrod was capable of limited space operations due to its vernier thrusters all over the hull. This allowed for units that were stationed on the deck of the SDF-1 to propel themselves back to the battle fortress if they were knocked off.
The Nimrod was, like the Phalanx, first deployed on the SDF-1 and was used to augment the ship's own weapon system to protect the vessel from Zentraedi attacks, even though the type came relatively late and was only used in the final phase of the war and only in limited numbers. After the conflict, production was throttled down (only a total of fifty SDR-04-Mk. XIVs were eventually built), and the surviving Nimrods from the SDF-1 were stationed at airbases in New Macross City and in nearby cities, such as Monument City.
Specifications:
Designation: SDR-04-Mk XIV
Mecha Class: Destroid
Crew: 2 (Pilot, WSO)
Weight: 21.8 tons (dry)
45.5 tons (loaded)
Height: 12.36 m (hull only, incl. radome)
13,50 m (with raised arms)
Breadth: 9,32 m
Depth: 5.0m
Max. walking speed: 72 kph loaded
Armament:
2x weapon clusters in shoulder locations, each with:
- Eight launch tubes for 540mm caliber mid-/long-range missiles (typically with anti-air capacity, artillery
rockets as alternative), with eight missiles ready and another sixteen as reserve (for a total of 48)
- One Mauler PBG-06 liquid-cooled electrically-charged twin particle beam gun
- Three thermal smoke dischargers
The kit and its assembly:
This is a fictional Macross Destroid, with a highly modified Imai Phalanx kit at its core. It depicts a potential successor for the missile-only-armed Phalanx, but it has been totally made up. Inspiration came when I recently procured a bunch of Kotobukiya’s MSG sets for mecha conversions – one of these sets included the quadruple missile launchers that now make up the Nimrod’s new “arms”. I was torn between using a Defender or a Phalanx as conversion basis, but due to the weapon pods’ bulkiness I went for the more massive Phalanx.
Beyond the MSG parts and the replacement of the Phalanx “missile drums”, there was initially no real plan for the conversion – things evolved gradually, depending on the donor parts at hand. However, several fundamental changes were made. The most important improvement measure that works for all Destroid kits with the “04” chassis is the integration of a completely now hip joint arrangement. OOB, the model's posture is pretty stiff, with the legs and feet facing straight forward. The model is just supposed to stand upright, and with the model’s OOB joint options it is really hard to create a vivid poise. Furthermore, the bolts that hold the legs are prone to break off, even more so because the Imai kit is from the 1st generation of mecha kits, without vinyl caps and just relying on a very tight joint fit for hold.
My proven solution: the implantation of a new hip “bone” made from plastic-coated steel wire, which is stiff in itself but can be bent in two dimensions. The thighs had to be modified accordingly, since the wire is much thinner than the original bolts. Inside of the pelvis, the W-shaped wire was attached with the help of sprue material and styrene profiles, a thorough fixation is necessary because a lot of load has to be held in place in a very small space.
In order to attach the legs to the wire, there’s a convenient trick: the receptor holes in the thighs were simply filled with small vinyl rings, standard material from other mecha kits (e.g. from Arii’s 1:100 VF-1 Battroids or the Gunze Sangyo/Aoshima Dorvack PAs), the rings’ outer AND inner diameter fit perfectly into the new arrangement. With this trick, a much more dynamic and "natural" leg position could be achieved, also thanks to the large feet and their joints of the “04” Destroid chassis. This tuning measure improves the model considerably. The legs were otherwise taken OOB, just some small styrene bits were added to the lower legs’ front sides (improving another small detail flaw of the model), and some openings on the lower legs’ rear side were filled with putty and styrene sheet. Furthermore, the open insides of the “heels” were filled with putty, too.
In order to integrate the new missile bins, suitable adapters for the shoulder had to be found. Being somewhat lazy and trying to use as many parts from the Phalanx kit as possible, I decided to integrate a styrene tube all through the upper body, so that I got better attachment points. This tube was extended so far that I could re-use the Phalanx’ blast exhausts from the original missile bins as shoulder joint covers. This looks very natural and these re-dedicated parts fit well over the implanted central styrene tube channel as well as into the channel that runs along the MSG missile containers’ inner side. In order to attach the new arms/containers, a smaller diameter styrene tube was glued into these channels, so that the new pods could be moved vertically.
As a weapon improvement over the Phalanx, a pair of particle beam guns was added to the new missile containers – they come originally from a Dorvack PA-36K “Berlon” kit, but they were tailored considerably in order to fit into their new position. They also help to hide the new shoulder joint, which was covered from above with parts from the Phalanx kit (the boxed that are normally attached to the upper legs) and the space between them with paper tissue, drenched with white glue. The result is a good visual transition.
The central hull was changed in order to move the look away from the Phalanx base. The rear side uses OOB parts, but these were modified and attached to the hull in a different way, so that the back is not as deep as on the Phalanx. The front received a vertical pair of searchlights (formerly return rollers from a 1:35 tank…), set into the breast plate. The cockpit bulge between the shoulders as well as the head unit are completely new. The cockpit cover is a leftover hull piece from a Kotobukiya helicopter drone, and it was moved forward, so that a crew of two is more plausible. The head unit on the elongated spine behind and above it consists primarily of a donor from a wrecked VT-61 “Tulcas” mecha (Dorvack), plus a small dish antenna for a tracking radar on the right (left over from a Dorvack PA-36K “Berlon” kit) and a round radome for target acquisition – scratched from main wheels of a Matchbox PB2Y and set upon a mount made from styrene profiles. Looks strange, esp. with that flat, square head unit underneath, but I wanted a unique and different look that sets the Nimrod apart from other canonical Destroid designs. And this certainly worked.
A final word concerning the Phalanx kit itself: like all other Destroids models, this is basically a simple affair and the model goes together well – but expect some PSR on every seam, and there are some improvements possible that IMHO raise the model’s quality. The lack of vinyl caps makes later movement a tricky affair, though, and it is interesting to see that while the “04” chassis Destroids (Phalanx, Tomahawk and Defender) share the same lower body, all three kits are different! As a positive trait concerning the finish, the Phalanx is also the only kit of this trio that comes with decals for the typical white trim on the lower legs of these Destroids.
Painting and markings:
Once more I wanted to stay true to the original look of a typical Macross Destroid from the “04” series. These tend to carry a uniform livery in murky/dull tones of green, brown and ochre: unpretentious "mud movers". Anything else is rare (I am aware of dark blue Phalanx’ on board of the SDF-1), and complex camouflage patterns are AFAIK not seen (probably a tribute to the TV series’ cel production). In consequence, I gave the Nimrod an overall livery in a rather unidentifiable brownish tone, namely RAL 7008 (Khakigrau), a tone that was carried by German WWII Afrikakorps tanks and very similar to the tone IDF vehicles like the Merkava typically carry nowadays. Since I only had this tone in a rattle can available, the model and its components were painted accordingly, with an additional hushed spray over the upper surfaces with a slightly lighter tone as a shading measure. After this basic painting, the parts received a washing with thinned black ink.
Decals mostly come from the OOB sheet, plus some extra stencils, including the "nose art" painted on the left leg (from a P-38); many Destroids and also Armored Valkyries seem to bear such markings. Gives the mecha a personal touch, though.
Finally, before everything was assembled, the kit received a dry-brushing treatment with light grey and an overall coat with matt acrylic varnish. As a final step, mineral pigments were dusted over the model, esp. around the feet and the lower areas of the mecha.
A rather straightforward conversion project that gradually evolved – but with a postive outcome, after some twists and turns. The fictional Destroid Nimrod turned out more believable than expected, thanks to the good donor parts that went into it, and the simple livery also adds to the design’s “realism” within the Macross universe. Even though the thing still looks odd – but not worse than the other canonical Destroids from the original TV series!
See more photos of this, and the Wikipedia article.
Details, quoting from Smithsonian National Air and Space Museum | Lockheed SR-71 Blackbird:
No reconnaissance aircraft in history has operated globally in more hostile airspace or with such complete impunity than the SR-71, the world's fastest jet-propelled aircraft. The Blackbird's performance and operational achievements placed it at the pinnacle of aviation technology developments during the Cold War.
This Blackbird accrued about 2,800 hours of flight time during 24 years of active service with the U.S. Air Force. On its last flight, March 6, 1990, Lt. Col. Ed Yielding and Lt. Col. Joseph Vida set a speed record by flying from Los Angeles to Washington, D.C., in 1 hour, 4 minutes, and 20 seconds, averaging 3,418 kilometers (2,124 miles) per hour. At the flight's conclusion, they landed at Washington-Dulles International Airport and turned the airplane over to the Smithsonian.
Transferred from the United States Air Force.
Manufacturer:
Designer:
Date:
1964
Country of Origin:
United States of America
Dimensions:
Overall: 18ft 5 15/16in. x 55ft 7in. x 107ft 5in., 169998.5lb. (5.638m x 16.942m x 32.741m, 77110.8kg)
Other: 18ft 5 15/16in. x 107ft 5in. x 55ft 7in. (5.638m x 32.741m x 16.942m)
Materials:
Titanium
Physical Description:
Twin-engine, two-seat, supersonic strategic reconnaissance aircraft; airframe constructed largley of titanium and its alloys; vertical tail fins are constructed of a composite (laminated plastic-type material) to reduce radar cross-section; Pratt and Whitney J58 (JT11D-20B) turbojet engines feature large inlet shock cones.
Long Description:
No reconnaissance aircraft in history has operated in more hostile airspace or with such complete impunity than the SR-71 Blackbird. It is the fastest aircraft propelled by air-breathing engines. The Blackbird's performance and operational achievements placed it at the pinnacle of aviation technology developments during the Cold War. The airplane was conceived when tensions with communist Eastern Europe reached levels approaching a full-blown crisis in the mid-1950s. U.S. military commanders desperately needed accurate assessments of Soviet worldwide military deployments, particularly near the Iron Curtain. Lockheed Aircraft Corporation's subsonic U-2 (see NASM collection) reconnaissance aircraft was an able platform but the U. S. Air Force recognized that this relatively slow aircraft was already vulnerable to Soviet interceptors. They also understood that the rapid development of surface-to-air missile systems could put U-2 pilots at grave risk. The danger proved reality when a U-2 was shot down by a surface to air missile over the Soviet Union in 1960.
Lockheed's first proposal for a new high speed, high altitude, reconnaissance aircraft, to be capable of avoiding interceptors and missiles, centered on a design propelled by liquid hydrogen. This proved to be impracticable because of considerable fuel consumption. Lockheed then reconfigured the design for conventional fuels. This was feasible and the Central Intelligence Agency (CIA), already flying the Lockheed U-2, issued a production contract for an aircraft designated the A-12. Lockheed's clandestine 'Skunk Works' division (headed by the gifted design engineer Clarence L. "Kelly" Johnson) designed the A-12 to cruise at Mach 3.2 and fly well above 18,288 m (60,000 feet). To meet these challenging requirements, Lockheed engineers overcame many daunting technical challenges. Flying more than three times the speed of sound generates 316° C (600° F) temperatures on external aircraft surfaces, which are enough to melt conventional aluminum airframes. The design team chose to make the jet's external skin of titanium alloy to which shielded the internal aluminum airframe. Two conventional, but very powerful, afterburning turbine engines propelled this remarkable aircraft. These power plants had to operate across a huge speed envelope in flight, from a takeoff speed of 334 kph (207 mph) to more than 3,540 kph (2,200 mph). To prevent supersonic shock waves from moving inside the engine intake causing flameouts, Johnson's team had to design a complex air intake and bypass system for the engines.
Skunk Works engineers also optimized the A-12 cross-section design to exhibit a low radar profile. Lockheed hoped to achieve this by carefully shaping the airframe to reflect as little transmitted radar energy (radio waves) as possible, and by application of special paint designed to absorb, rather than reflect, those waves. This treatment became one of the first applications of stealth technology, but it never completely met the design goals.
Test pilot Lou Schalk flew the single-seat A-12 on April 24, 1962, after he became airborne accidentally during high-speed taxi trials. The airplane showed great promise but it needed considerable technical refinement before the CIA could fly the first operational sortie on May 31, 1967 - a surveillance flight over North Vietnam. A-12s, flown by CIA pilots, operated as part of the Air Force's 1129th Special Activities Squadron under the "Oxcart" program. While Lockheed continued to refine the A-12, the U. S. Air Force ordered an interceptor version of the aircraft designated the YF-12A. The Skunk Works, however, proposed a "specific mission" version configured to conduct post-nuclear strike reconnaissance. This system evolved into the USAF's familiar SR-71.
Lockheed built fifteen A-12s, including a special two-seat trainer version. Two A-12s were modified to carry a special reconnaissance drone, designated D-21. The modified A-12s were redesignated M-21s. These were designed to take off with the D-21 drone, powered by a Marquart ramjet engine mounted on a pylon between the rudders. The M-21 then hauled the drone aloft and launched it at speeds high enough to ignite the drone's ramjet motor. Lockheed also built three YF-12As but this type never went into production. Two of the YF-12As crashed during testing. Only one survives and is on display at the USAF Museum in Dayton, Ohio. The aft section of one of the "written off" YF-12As which was later used along with an SR-71A static test airframe to manufacture the sole SR-71C trainer. One SR-71 was lent to NASA and designated YF-12C. Including the SR-71C and two SR-71B pilot trainers, Lockheed constructed thirty-two Blackbirds. The first SR-71 flew on December 22, 1964. Because of extreme operational costs, military strategists decided that the more capable USAF SR-71s should replace the CIA's A-12s. These were retired in 1968 after only one year of operational missions, mostly over southeast Asia. The Air Force's 1st Strategic Reconnaissance Squadron (part of the 9th Strategic Reconnaissance Wing) took over the missions, flying the SR-71 beginning in the spring of 1968.
After the Air Force began to operate the SR-71, it acquired the official name Blackbird-- for the special black paint that covered the airplane. This paint was formulated to absorb radar signals, to radiate some of the tremendous airframe heat generated by air friction, and to camouflage the aircraft against the dark sky at high altitudes.
Experience gained from the A-12 program convinced the Air Force that flying the SR-71 safely required two crew members, a pilot and a Reconnaissance Systems Officer (RSO). The RSO operated with the wide array of monitoring and defensive systems installed on the airplane. This equipment included a sophisticated Electronic Counter Measures (ECM) system that could jam most acquisition and targeting radar. In addition to an array of advanced, high-resolution cameras, the aircraft could also carry equipment designed to record the strength, frequency, and wavelength of signals emitted by communications and sensor devices such as radar. The SR-71 was designed to fly deep into hostile territory, avoiding interception with its tremendous speed and high altitude. It could operate safely at a maximum speed of Mach 3.3 at an altitude more than sixteen miles, or 25,908 m (85,000 ft), above the earth. The crew had to wear pressure suits similar to those worn by astronauts. These suits were required to protect the crew in the event of sudden cabin pressure loss while at operating altitudes.
To climb and cruise at supersonic speeds, the Blackbird's Pratt & Whitney J-58 engines were designed to operate continuously in afterburner. While this would appear to dictate high fuel flows, the Blackbird actually achieved its best "gas mileage," in terms of air nautical miles per pound of fuel burned, during the Mach 3+ cruise. A typical Blackbird reconnaissance flight might require several aerial refueling operations from an airborne tanker. Each time the SR-71 refueled, the crew had to descend to the tanker's altitude, usually about 6,000 m to 9,000 m (20,000 to 30,000 ft), and slow the airplane to subsonic speeds. As velocity decreased, so did frictional heat. This cooling effect caused the aircraft's skin panels to shrink considerably, and those covering the fuel tanks contracted so much that fuel leaked, forming a distinctive vapor trail as the tanker topped off the Blackbird. As soon as the tanks were filled, the jet's crew disconnected from the tanker, relit the afterburners, and again climbed to high altitude.
Air Force pilots flew the SR-71 from Kadena AB, Japan, throughout its operational career but other bases hosted Blackbird operations, too. The 9th SRW occasionally deployed from Beale AFB, California, to other locations to carryout operational missions. Cuban missions were flown directly from Beale. The SR-71 did not begin to operate in Europe until 1974, and then only temporarily. In 1982, when the U.S. Air Force based two aircraft at Royal Air Force Base Mildenhall to fly monitoring mission in Eastern Europe.
When the SR-71 became operational, orbiting reconnaissance satellites had already replaced manned aircraft to gather intelligence from sites deep within Soviet territory. Satellites could not cover every geopolitical hotspot so the Blackbird remained a vital tool for global intelligence gathering. On many occasions, pilots and RSOs flying the SR-71 provided information that proved vital in formulating successful U. S. foreign policy. Blackbird crews provided important intelligence about the 1973 Yom Kippur War, the Israeli invasion of Lebanon and its aftermath, and pre- and post-strike imagery of the 1986 raid conducted by American air forces on Libya. In 1987, Kadena-based SR-71 crews flew a number of missions over the Persian Gulf, revealing Iranian Silkworm missile batteries that threatened commercial shipping and American escort vessels.
As the performance of space-based surveillance systems grew, along with the effectiveness of ground-based air defense networks, the Air Force started to lose enthusiasm for the expensive program and the 9th SRW ceased SR-71 operations in January 1990. Despite protests by military leaders, Congress revived the program in 1995. Continued wrangling over operating budgets, however, soon led to final termination. The National Aeronautics and Space Administration retained two SR-71As and the one SR-71B for high-speed research projects and flew these airplanes until 1999.
On March 6, 1990, the service career of one Lockheed SR-71A Blackbird ended with a record-setting flight. This special airplane bore Air Force serial number 64-17972. Lt. Col. Ed Yeilding and his RSO, Lieutenant Colonel Joseph Vida, flew this aircraft from Los Angeles to Washington D.C. in 1 hour, 4 minutes, and 20 seconds, averaging a speed of 3,418 kph (2,124 mph). At the conclusion of the flight, '972 landed at Dulles International Airport and taxied into the custody of the Smithsonian's National Air and Space Museum. At that time, Lt. Col. Vida had logged 1,392.7 hours of flight time in Blackbirds, more than that of any other crewman.
This particular SR-71 was also flown by Tom Alison, a former National Air and Space Museum's Chief of Collections Management. Flying with Detachment 1 at Kadena Air Force Base, Okinawa, Alison logged more than a dozen '972 operational sorties. The aircraft spent twenty-four years in active Air Force service and accrued a total of 2,801.1 hours of flight time.
Wingspan: 55'7"
Length: 107'5"
Height: 18'6"
Weight: 170,000 Lbs
Reference and Further Reading:
Crickmore, Paul F. Lockheed SR-71: The Secret Missions Exposed. Oxford: Osprey Publishing, 1996.
Francillon, Rene J. Lockheed Aircraft Since 1913. Annapolis, Md.: Naval Institute Press, 1987.
Johnson, Clarence L. Kelly: More Than My Share of It All. Washington D.C.: Smithsonian Institution Press, 1985.
Miller, Jay. Lockheed Martin's Skunk Works. Leicester, U.K.: Midland Counties Publishing Ltd., 1995.
Lockheed SR-71 Blackbird curatorial file, Aeronautics Division, National Air and Space Museum.
DAD, 11-11-01