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c/n 212002.
Built 1969.
XW175 spent her entire career as a test aircraft and was fundamental in the development of Vectored thrust Aircraft Advanced Control, or ‘VAAC’ for short.
Retired in 2010, she is believed to eventually be destined for the RAF Museum, although she currently remains safely stored with the Defence School of Aeronautical Engineering (DSAE).
Seen on static display at the 2018 Cosford Airshow.
RAF Cosford, Shropshire, UK.
10th June 2018
The following extensive history for XW175 is from the fascinating Bedford Aeronautical Heritage Group website:-
“Harrier XW175 was unique as a military aircraft as it spent all of its working life at RAE Bedford and Boscombe Down in support of innovative STOVL research programmes.
A two-seat second development batch T2 aircraft, XW175 first flew in 1969. It was delivered to RAE Bedford from BAe in February 1975. The aircraft extended the VTOL legacy at RAE Bedford following the Bedstead and the Short's SC1, and operated in research and development tasks for future STOVL concepts.
In the early 1970’s RAE was tasked by MoD to enable Sea Harriers to recover to a vertical landing on a ship at night in poor visibility. XW175 was allocated as the trials aircraft and thus began its illustrious 38 year research career at RAE Bedford and then post 1996 at Boscombe Down.
During 1977/78 two sea trials were completed with HMS Hermes. The research programmes included recovery to the ship using MADGE guidance, Head Up Display symbology, ski-jump launch, auto-stabiliser and autopilot development, pilot work-load measurements using heart rate measurements and later Forward Looking Infra Red vision demonstrations.
In the early 1980’s, studies into future advanced STOVL aircraft concepts, as a planned replacement for the Harrier, indicated that flight control at low speed and hover would be more complex than the Harrier. This situation started a research programme into novel pilot control methods to address ASTOVL control and was led by XW175. The basic idea was that the pilot's control of the aircraft was to be as similar as possible to conventional aircraft thus significantly reducing type conversion time for pilots and the training costs.
To test the design principles the aircraft had to be converted to a fly-by-wire aircraft such that digital techniques could be implemented. The aircraft modifications were made at the College of Aeronautics, Cranfield, The installations provided a full authority fly-by-wire system with links to the aerodynamic surface actuators and the engine thrust and thrust vector control actuation. It retained the basic mechanical control system to provide flight safety and meet airworthiness requirements. This approach allowed software to be introduced without having to address the rigour required to meet the full flight safety standards of fly-by-wire aircraft. The aircraft was also fitted with the MODAS recording system and a telemetry system for trials monitoring. The aircraft became known as the Vectored thrust Aircraft Advanced Control (VAAC).
Over the period 1986-2004, several different control and safety concepts were developed with UK Universities and Industry. Simulation played a major role in concept testing and the Bedford Advanced Flight Simulator with its large motion capability was critical for this task. Concept designs were assessed against a range of flight specific tasks prior to flight trials. The most important task was the ability to land vertically on a rolling, pitching and heaving ship deck which was where the Bedford Advanced Flight Simulator with its visual and motion systems provided a risk free and realistic testing environment. This method also provided the confidence to proceed to flight trials and ultimately the first ever deck landing with what became known as the 'Unified' control technique.
The implementation allowed an untrained Harrier pilot to fly the aircraft like a conventional aircraft with the addition that there were no restrictions due to the conventional wing stall speed. Thus it made possible the continued control of the aircraft down to zero airspeed with the wing lift blending from aerodynamic control seamlessly to direct lift control from the engine without any additional effort required from the pilot, unlike the conventional Harrier. Initially the technique was not well received by the majority of experienced Harrier pilots.
Many further assessments were to slowly change the mind set with much discussion in two pilot camps as to the pros and cons of the technique. Between the mid 1980's and mid 1990's RAE collaborated with NASA Ames research centre into the application of advanced digital control techniques to support ASTOVL aircraft concepts. This joint platform provided not only an excellent exchange of ideas between UK and US pilots and scientists but also promoted pilot debate on the merits of such advanced control methods. Pilot acceptability remained unresolved up to the early part of the Joint Strike Fighter programme. Then the Naval Air Systems Command (NAVAIR) contribution to the programme through the JSF Program Office (JPO) became significant through a joint targeted programme in support of the JSF STOVL variant (Lockheed Martin F-35B).
In 2002 the Bedford Unified control concept was selected for the JSF STOVL variant. XW175 was also part of the Empire Test Pilots School's training syllabus for a few years at this time.
The JPO continued to support further STOVL developments with several ship trials with XW175 and HMS Illustrious, HMS Invincible and the French carrier Charles de Gaulle. These trials introduced guidance techniques for automatic recovery along side a ship with an automatic vertical landing capability, some 30 years after the original HMS Hermes trials with XW175 in 1977 and some 35 years after the certification of Civil automatic landing systems back in the BLEU days. Technology advancements had bridged this time period and the gradual acceptance of the new control concepts.
With the established STOVL flight control standard, XW175 in its new livery continued to support JSF recovery requirements to ships with a 60 knot airspeed approach and landing method referred to as 'Ship Rolling Vertical Landing' (SRVL). This approach speed provided JSF with ship recovery flexibility as a percentage of wing lift at this airspeed would offset engine direct lift and enhance safety margins.
In conjunction with this programme ship deck lighting was developed for poor visibility and night recovery to ships. This programme produced the new 'Bedford Array' of deck lights to provide an unambiguous touch down point irrespective of the ship deck motion. The 'Bedford Array' with SRVL provided an effective and alternative solution to ship recovery at night in poor visibility and hence operational flexibility.
Having conducted its last research trial in support of JSF development at Boscombe Down on 18 November 2008, XW175’s final resting place remains to be resolved. BAHG has expressed strong interest in bringing the aircraft back to Bedford, its spiritual home. It is to be hoped that an appropriate resting place can be found for this illustrious aircraft of the Harrier fleet, but which became so unique providing the MOD with many products over its lifetime due to the combined efforts of all the pilots, scientific staff and engineers who had the great privilege to work with her.”
I hope this one shot explains why I haven't been around for a while.
You know the busiest one can be, yeah take that and multiply it by 10, that's how busy I am now, I just had to upload something because I feel that there is something missing in me when I don't photograph.
I honestly miss photographing so much, and miss you guys, wish me luck. =)
The new Engineering 5 building on campus. Taken at a UW Photo Club meeting.
Velvia 100, 4x5 processed at home. No post-processing at all - just as scanned.
Taken with a Schneider 90mm, f/8
It was hard to decide which to enter the contest with, but I went with this shot instead.
View of the full-size Rosetta engineering model (EQM) at ESOC, Darmstadt.
Rosetta is en route to Comet 67P/Churyumov-Gerasimenko, where it will make the most detailed study of a comet ever attempted. It will follow the comet on its journey through the inner Solar System, measuring the increase in activity as the icy surface is warmed up by the Sun. The lander will focus on the composition and structure of the comet nucleus material. It will also drill more than 20cm into the subsurface to collect samples for inspection by the lander’s onboard laboratory.
More about Rosetta: www.esa.int/rosetta
Credit: ESA/J.Mai
A pair of unidentified Colas Class 70s pass through Radley on 4 March 2023 whilst working 6O26, the 09.24 Hinksey to Eastleigh.
At the far end of the platform on which I was stood are some other photographers, they are a bit of a clue as to why I arose from my bed at 'silly o'clock' to come to this large village a few miles south of Oxford. Vintage Trains were operating a shareholders' special train from Birmingham to Didcot for the Railway Centre's 'Castle' celebrations, 7029 and 5043 were the motive power for the special and I had never previously seen or photographed double-headed Castles on the main line. Unfortunately, just as the special hove into view there was a bit of a rush of selfish photographers who simply got in my way and ruined my shot. So, a long way to go just for a pair of 70s! I am not being bitter and twisted about this situation, honestly!
English Welsh & Scottish Railway Class 47, 47789 "Lindisfarne" and Virgin West Coast Class 87, 87028 "Lord President", prepare to depart Carlisle with 1S67 from London Euston to Glasgow Central via Dumfries. The Class 47 was added at Carlisle to drag the train over the non-electrified Glasgow & South Western route via Dumfries
A view of my faculty, the EEMCS (Electrical Engineering, Mathematics and Computer Science), or simply EWI in Dutch. Lots of crazy ideas coming out these windows. Mind your head. Please.
July’s Friday Late celebrated the creative force of engineering. We exploded your idea of what an engineer does, and journey from bridges to electronics, music to code, from paper to concrete. From robotic fabrication to sound engineering, visitors joined us to discover how engineering influences the V&A, and everything around you.
Designed by engineering prodigy Mikhail Shastin and his design bureu the Avtomat Shastin model 1991 was the most advanced rifle Russia has ever produced.
Design
- Utilises a balancing system which virtually eliminated felt recoil and muzzle rise.
- Composite grip hand guard and folding stock which is more durable than wooden furniture of past rifles.
- Modern rear mounted aperture sight which are faster to train than a traditional open rifle sight.
- 30 round magazine with windows allowing the soldier to see how much ammunition is left in the magazine.
- Muzzle brake to further reduce recoil.
- Semi, full auto and three round burst capability.
- Can fire both 5.45x39mm and the larger 7.62x39mm rounds.
Performance
- fire rate of 1000 rounds per minute (3 round burst) 600 rpm (Full auto)
- Field tests revealed the weapon to be exeptionaly accurate in all fire modes and performance is consistent in adverse conditions.
Calibre
- 5.45x39mm
- 7.62x39mm
SPACE TREK ENGINEERING ROOM INSTRUCTIONS:
Instructions for my custom model of engineering room are ready and for sale on my website:
www.baronsat.net/baronshop/Engineering-Room/instructions-...
now you can build your own.
These pictures were taken with my brand new Tokina 11-16mm 2.8 wide angle lens and I was just having some fun. The location for these pics is the University of Illinois, particularly the Main and Engineering Quad.
But No Replacement Bus Service !!
During the week I was in Scarborough , the Central Cliff Lift ( Tramway ) was closed because of work on the tracks .
Regrettably I had to walk up the adjacent stairs . It took me over 15 minutes , and two squirts of my Angina spray .
Scarborough , North Yorkshire .
Thursday lunchtime 07th-November-2024.
Some cool prototype engineering images:
Sinsheim – Technikmuseum Sinsheim – Aérospatiale-BAC Concorde 101-102 Air France F-BVFB 02
Image by Daniel Mennerich
Aérospatiale-BAC Concorde is a retired turbojet-powered supersonic passenger airliner or supersonic transport (SST). It is a s...
Read more about Cool Prototype Engineering pictures
(Source from Chinese Rapid Prototyping Blog)
by pedrosimoes7
As a implies of sophisticated solution style, reverse engineering in China are now far more and much more significance in enterprises, reverse technologies, consideration of a lot more and much more broadly. Reverse Engineering (Reverse Engineering) project idea: By way of the...
Read more about Copycad In Reverse Engineering
(Source from Chinese Rapid Prototyping Blog)
Stone wall at Mihintale. I tend to believe that there is a reason why some stones are at an angle and have 5 edges. They could have easily straighten it up, given what we can see around.
This is a laser cut piece of steel we keep in Civil Club, which represent the VW shell of UBC Engineering. UBC engineers are famous for their pranks on Engineering week. Every year on the first day of Engineering week, UBC undergrad engineers hang a VW shell with a red E on it from a bridge! Where? Who knows, it could be our beautiful Lions Gate Bridge, or Golden Gates of California! I know it's not the best prank, but it has turned into a tradition since decades ago.
E week is in February, but I'm studying too much E-material these days that I liked to post this.
Hopefully this year, in Feb, I will take pictures of the hung VW from "a bridge"!
FAM Engineering 308FAM on Churchill Way, Salford hauling First Manchester 37440 (MX58DZO).
New as MW03NMA in July 2003
Photo taken by and copyright Noel Baxendale.
This video by Tek Domain gives you insight about Computer science vs Computer engineering -- Which is Right for you ? We are a community of tech pros sharing our experiences in the tech world, the successes and failures.
Some cool milling engineering images:
Hagen – Freilichtmuseum Hagen – Zink Walzwerk Karusellgießer Fa. Hoesch
Image by Daniel Mennerich
The Hagen Open-air Museum (LWL-Freilichtmuseum Hagen – Westfälisches Landesmuseum für Handwerk und Technik English: "LWL Open-air Museum Ha...
Read more about Cool Milling Engineering photos
(Source from Chinese Rapid Prototyping Blog)
Speaking of engineering and bulky costumes. "Iron Man" is another interesting challenge. I've read that it's taken the designers of the "real" costume three movies to figure out how to make the armor work without pinching the hell out of the actor.
So the challenge for cosplayers is to make it lightweight, comfortable, practical, and affordable. Like all engineering challenges, it's always a question of "how do we define the goal of this project?" and then giving yourself the freedom to jettison ideas and features that you "want" instead of "need," if necessary.
What good is a rigid costume that you can wear for about 27 minutes before you cry "uncle"? I've seen people in chain-mail suits who looked — what a surprise — like they were carrying 72 pounds of metal all over their bodies. Hardly happy campers and you rarely see them twice on the same day.
This set of Iron Man armor is made of foamcore, it seems, and it looks great. Would it fool you into thinking it's the movie costume? Of course not, but that's not really the goal of cosplay. It hits all of the design points, it's well-executed, and you can look at it without thinking "Oh, that poor, poor man..."
Having just departed from Attleborough station, Turbostar 170205 heads towards Norwich with the 1K68 service. Due to engineering works, services begin and end at Ely this weekend.
Notes about these pictures: Most of my Chemtrail pictures were taken in Dayton, Ohio--home of The Wright-Patterson Air Force Base -- final resting place of the Roswell aliens <:-0 -- and apparently from my photo and video documentation, Chemtrail Central. This area has been getting Chemtrailed on a massive, daily basis and I have 1000's of pictures and videos since I began documenting Chemtrails regularly, in late 2014. The level of Chemtrail activity here is astonishing, and is being conducted, as they say, in plain sight. Looking back through my film archive of slides & negatives, I have convincing evidence of Chemtrailing activity back to the early 1990’s, and chemtraily-looking skies back to the early 1980’s.
I am designating all my Chemtrail pictures and videos uploaded to Flickr as CC0 (Creative Commons Zero), which removes my copyright and releases them into the Public Domain. My goal is to make them available in the highest resolution possible, and without any image processing. They are archived on Flickr under "Chem Trailchaser".
I hope by making these images widely available, it will accelerate interest, research, study and more documentation from all over the world. Please, download, copy, backup, mirror, share and use & improve as many of these photos as you can! Thanks for looking - Chem
Penn State University 2020, an EMD SD60I donated by Norfolk Southern for use in Rail Transportation Engineering programs offered at the Altoona campus of Penn State University, is now enshrined at the Railroaders Memorial Museum.
Built as Conrail 5582, it is the only remaining unrebuilt SD60M/I. Hopefully someday it can be backdated to its as built Conrail appearance.