Tag Archives: demonstrator

Century Circle

I got to the gate for Antelope Valley Air Show 2022 early in the morning. We were lined up outside the security gate for Edwards AFB waiting for the time things opened up. I was on the phone so was happy to sit in the car for a while chatting. When I finished my call, I could see that I was a short distance away from Century Circle – a display of various aircraft associated with Edwards. Nothing was moving so I figured I would walk up and have a look around. I had got most of the way there when it looked like cars were starting to move. I rapidly retraced my steps to the car and we drove on to the base.

At the end of the show, I was coming back out the same gate so decided to see if it was possible to pull in and see the aircraft on display. Indeed, there were no barriers and Iw as able to park up and have a walk around the various exhibits. The name, Century Circle, is a reference to how many of the jets are Century Series fighters. There is going to be a museum for the Air Force flight test center and the base for the building was not far from the aircraft. I will be interesting to see what the museum is like when it is finished and how many of the other interesting aircraft that are currently on base will be included.

Of the jets on display, my favorites are the F-106, the F-105 and the F-104. Nicely sequential now I think about it. There is an F-102 which I have never been so keen on and this one is a two seater which takes a place that didn’t look that great and makes it worse. Still, vintage jets on display is a good thing and I shouldn’t be critical of what is on offer.

The one plane that is a bit of an oddball is the McDonnell Douglas YC-15. This was a program the USAF ran for a new jet transport to replace the C-130. Boeing and McDonnell Douglas both built demonstrators for the program but neither was taken to production. However, there are a lot of features from the YC-15 that will be familiar to observers of the C-17. Having a transport jet alongside the sleek fighters is a little unusual but it is a rare beast and worthy of preservation. Thankfully, the dry desert atmosphere is a place that will allow the airframe to survive for many years.

This Is Not Your Standard Dornier

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I have subscribed to Flight International for a very long time. I used to have it ordered with my local newsagent in Cowes when I was in high school, I got it ordered by Smiths in Kensington High Street when I was a student and, when I had a job after graduation, I finally got a proper subscription set up. That has continued ever since but, these days, Flight has become a digital only subscription for me. Still, I have continued it all these years despite having left the industry long ago. It does provide me with information on unusual test programs and that includes the Lockheed Martin X-55 Advanced Composite Cargo Aircraft (ACCA).

This was a demonstrator program for a new composite fuselage construction. The baseline aircraft was a Dornier 328Jet but it had its fuselage replaced by a composite one that LM built using advanced techniques and with a far shorter lead time. As a demonstrator, things did not go quite as smoothly as they might have but that is why you do programs such as this. It was never intended to be a production jet. It was to show what could be done with the technology if required. The jet was flown for a number of tests but I think building it was the bigger part of the program.

Once testing was complete, the airframe became part of the collection at the Joe Davies Airpark in Palmdale. When I saw it was there, I was very interested to see it. I suspect, for a lot of the visitors to the Airpark, it is one of the less interesting aircraft on display. The signs explain what it is all about but that is probably of little interest to many visitors. For a geek like me, though, it was probably one of the most interesting aircraft in the collection. Sure, the Shuttle Carrier Aircraft is special but there are two of those. This aircraft is unique. Having read about it long ago, seeing it in person is special. (If I ever get to see the Boeing 360 helicopter demonstrator, this will be the same thing.)

P1A Tucked In The Back

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The Boscombe collection has a couple of interesting testbed airframes. The Avro 707 was in a previous post but another fine jet is the English Electric P1A. The precursor to what was to become the Lightning, the P1A is very similar in some respects but quite different in others. The nose is a pitot inlet without the shock cone that the Lightning adopted to house its radar. The rest of the front fuselage has quite a different shape while it also feels lower to the ground than the Lightning was. It is nice that a Lightning front fuselage is displayed alongside it for comparison.

Avro 707

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The development of the Vulcan required a lot of concept testing before the full size jets were built. Avro built a series of smaller scale delta winged jets to work out some of the issues under the name Avro 707. One of these lives at Old Sarum in the Boscombe Down Aviation Collection. It is painted a bright orange color and, while tucked in a dark hangar, it still looks striking. It would be great to get some elevation to show off the delta planform of the jet but still happy to have managed to see it. I was rather close to it so needed to shoot a variety of shots to stitch together afterwards which only worked so well.

Rafale A Demonstrator

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The Dassault Rafale is a fantastic looking aircraft. Gradually being built in reasonable numbers, it has broken into the export market and has customers in Egypt and Qatar and probably India although exports to India are always hard to pin down! The French air force and navy will no longer be the sole operators. The Rafale B is a two seat version and the C is the Air Force’s single seat version. However, there was the Rafale A. One of them was built in the mid 1980s as a demonstrator. It looks almost identical to the production version but was actually slightly larger. Painted in Dassault’s house colors, it made a number of air show appearances. At the time, it was competing for attention with BAe’s EAP demonstrator. I didn’t get to see EAP until I got to Warton where I wasn’t able to photograph it!

Here are some shots of the Rafale A. It was originally powered by GE F404 engines although later one was swapped for the M88 that would power the production Rafale. The first Rafale C was rolled out in an all black paint scheme which made it look very cool. The size difference is not immediately obvious but a number of detail design changes were incorporated too including lots of sensors required for an operational type rather than the demonstrator. The wing planform was also altered slightly based on the experience gained with the demonstrator. I understand that, when the aircraft was retired, it went to the Museum at le Bourget in Paris.

Westland Black Hawk

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The Sikorsky Black Hawk is a ubiquitous helicopter. They are in service around the world and Sikorsky has a second production facility getting established in Poland. What is not so well known, though, is that Westland attempted to become a license producer of the helicopter for the UK and other markets. They went as far as to build an airframe from a knocked down kit. Meanwhile, another airframe was converted to with what was then the Rolls Royce/Turbomeca RTM322 turboshaft engine for testing purpose. Together, these two airframes were demonstrated at Farnborough. The Westland derivative was not ordered by anyone and both airframes were ultimately converted to other configurations and sold on to other operators.