Tag Archives: research

This Is Not Your Standard Dornier

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.)

RV Thomas G. Thompson

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Quite a while back, now, I was down on the shore at Mukilteo when this research ship transited passed the lighthouse. It was clearly a vessel designed for studying something marine related (unless it was a spy ship) so I decided to check it out. There is a small fleet of these vessels operated by the Office of Naval Research. They put operation of the ships out to tender and this one was won by the University of Washington.

The ship is named after the guy that founded UW’s Oceanographic lab in the 30s. it spends over 300 days a year at sea, so I guess they get plenty of use out of it. Originally, she would have been scheduled out of service by this year but a big refit was carried out in a local Seattle shipyard, Vigor, a few years back so she should be good until the late 2030s.

Edwards Storage Yard

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I had a recent post of some shots from the USAF museum at Edwards AFB. It reminded me of my first visit to Edwards in 1990. On that trip I saw both the USAF side of things and the NASA side. The NASA hangars were great and there were lots of amazing types being used for testing purposes. I didn’t see everything I was hoping for there but it was still fantastic. One thing that really excited me was the storage lot. There were some interesting airframes parked up there. An F-8 Crusader that had been used for supercritical wing testing was there. I think that has since been taken care of and is now restored. The fly by wire testbed was also there.

There was also a weird hybrid airframe. I think it was called RSRA which stood for rotor systems research aircraft. This was a hybrid of rotor and fixed wing technologies. One of them was modified for the X-Wing program which was canceled before it could fly. Not sure which one I saw but I think it was the unmodified one. These things could have A-10/S-3 engines fitted to them for higher speed research work. Oh, to have seen one in action. This lot would have been definitely worth some time looking around if it had been possible.

One of the Early F-16s

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The early versions of jets are often repurposed throughout their life. They serve a role for testing but they are not configured like production jets and to make them so is too expensive to be worthwhile. Besides, they are instrumented to some extent so they can be useful for carrying out alternate tests. As a result, they often get used for trials, research tasks or development of alternate concepts. The early F-16s did a lot of this sort of work and ended up in some odd programs like the AFTI effort. Sitting outside at the Frontiers of Flight museum is one of these test aircraft. It spent its life with General Dynamics (now Lockheed Martin) at Fort Worth and, once it was done with, it found a new home at the museum. Compared to the average F-16, this jet will have had a lot of interesting experiences!

Talon Hate

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Talon Hate is a program that the Air Force is running involving an infrared sensor mounted in the front of a centerline fuel tank. It is mounted on an F-15 from the operational test unit at Nellis AFB. The first time I saw it, I was walking along the flight line at Nellis. We were shooting with the California ANG unit that was the next space along the line. As we walked past the Talon Hate jet, we were under strict instructions not to photograph it. I was right there but nothing I could do.

During my visit to Red Flag 16-4, the Talon Hate jet flew a couple of times. It flew with a second F-15 each time and sometimes with other jets. The pod is clearly visible on the jet but the other modifications are less conspicuous. There is a satellite communications antenna mounted on the back on the jet. When it turns for final, you can see the antenna mount. I don’t know what the outcome of the program will be but it is cool to see the venerable F-15 still trying out new stuff.

Survey Surfboard

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Spotting surfers along the Pacific coastline is not too tricky. Anywhere with beach access is likely to have someone who has gone in to the water with their board. However, an unmanned surfboard is not a common occurrence. As we were motoring across Monterey Bay, we came across this board. It is an unmanned research platform with a number of instruments to monitor the bay. Apparently it is powered and can cruise itself around the bay and radio back its readings to the researchers on land. A curious looking thing!

Submarines

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There weren’t just sailing ships along the harbor front. A couple of submarines were also there. One was an old Russian sub while the other was far smaller but was a research submarine. The Russian sub is a Foxtrot class diesel-electric sub and it is moored a further out on a pier away from the shore. The USS Dolphin was a test and research sub for the US Navy and was involved in much deep diving research and test programs to support the fleet subs. She has a very simple hull shape compared to operational subs. She was only retired in the last ten years and was the longest serving sub in the Navy.

Oblique Wing

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Hiller Aviation Museum has another aircraft I find interesting. This is the AD-1 Oblique Wing research aircraft from NASA. I have crossed paths with this machine before. I have seen it at Hiller before but it was also still at Edwards when I paid a visit to the NASA facility there in 1990. The oblique wing concept is an interesting one. Swing wing aircraft aim to combine he low speed and high speed characteristics required into one plane by having multiple wing sweep angles. The oblique wing approach aims to simplify this by having a single wing that pivots. The sweep angle is the same but eh CG is unaffected and the pivot mechanism much simpler.

Forward swept wings are fine so, while the oblique wing looks odd, it should be practical. It will have some interesting aeroelastic issues to be dealt with but, it should be possible to engineer. Whether it will then deliver the benefits has never been tested. The AD-1 was a low speed research aircraft only but it flew many times over the years it was in service. Now it hangs from the roof of the museum.