Category Archives: aircraft

Cathay’s Special

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For its 80th anniversary, Cathay Pacific painted one of its A350-900s in a retro livery. It makes you feel a touch old when you remember their whole fleet having been painted in these colours but then again, I am a touch old! This plane has been in to Heathrow on a number of occasions but combinations of time of arrival, weather and my availability have meant I have never seen it until recently. It was due on on a Saturday late in the afternoon. It was not going to be too close to sunset so, any delays should not be an issue.

The forecast was for overcast but, during the majority of the day, it was really sunny. I was hoping that this would stay but, unfortunately, the forecast was not wrong. I was watching the sun descend behind a cloud layer hoping that it might pop out below in time for the arrival. Sadly, this didn’t occur, but the lighting was not too bad, and I am pretty happy with the shots that I got. It really is a nice livery. The only discrepancy from the original is the the Union Flag is gone since Hong Kong is now back under Chinese control.

Details on Tiles and Insulation Blankets

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The previous post I created about the Space Shuttle, Discovery, had a number of shots of the whole orbiter. However, as I walked around, I found the lighting showed off the texture of the vehicle’s surface in a really interesting way. Not long before I went to Udvar-Hazy, I had seen a video that showed how the tiles had been made for the shuttle. That included a bit about the integrity that was required after which a hole was drilled in each tole for a moisture protection system. This hole created a hot spot which shows on all of the tiles on Discovery.

The tiles were used in the hottest areas of the airframe during reentry. Initially, the whole shuttle was covered in tiles but, over time, they changed to using a blanket type of insulation in the areas that were less stressed. The texture of these blankets looks rather rough for something that flies at such speeds. I guess it did the job nicely, though.

I also liked some of the details around the reaction control system nozzle and on the corners of some of the control surfaces. They look both tough but also quite delicate. An odd contradiction in my perceptions. To think that this was originally designed in the 1970s and then constantly improved up to the point when it was retired is quite something looking at it in 2026.

Sally B

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The lighting was far from ideal at Cosford when B-17 Sally B did its display, but the display itself was a good one. After a couple of decades in the US, I have seen a variety of B-17s at air shows. Sally B will still be the first one I saw, though. She has been part of the UK display scene for as long as I have known about it and was one of the five that were used for the filming of Memphis Belle. Good to see her again and glad to know that they have continued to keep her active.

Sikorsky X2

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A few manufacturers have been experimenting with high-speed rotor craft. Sikorsky put its efforts into a project called X2. This is a contra-rotating helicopter with a pusher propellor. The contra-rotation of the rotors offsets the retreating blade stall issues that high speeds on helicopters cause. The rear pusher propellor allows the higher speeds to be achieved.

When the programme was completed, the airframe was donated to the National Air a Space Museum which put it on display at the Udvar-Hazy Annex at Dulles. Seeing it in person made it quite clear just how small the vehicle is. Since it is a research airframe, there is no need for payloads to be carried. It is about proving the concepts. That means it can be smaller and smaller also can mean cheaper. Seeing it from the side was also matched by having a good view down on it from one of the stairways. It would have been cool to see it fly, I imagine.

Busy Ramp at Brize

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I was at Brize Norton earlier this year. I had a brief chance to look at the ramp both as we taxied out and as we returned. A combination of A400Ms and Voyagers were about with some holding to depart as we came back and others awaiting their next mission. Here are a few shots of the residents.

Condensation Patterns on the A380

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The glossy paint finishes on airliners tend to make the fuselages look uniform to the naked eye – particularly when at a distance. Of course, when you get closer – particularly on an aluminium fuselage – you can see the joints and reinforcements that go into the detailed design. A British Airways A380 was on one of the gates at Heathrow early one morning as we taxied by. I assume it had been there for a while because there was a lot of condensation on the skin from morning dew. This served to highlight the different parts of the structure including where the skin was thicker and were there was an overlap of skin layers. I thought it was interesting to see how it made a normally uniform fuselage look so much more complex.

The X-35B and Its Propulsion System

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The F-35 is in widespread service in considerable numbers with many more to come in due course. However, before the F-35, there was the X-35 – the Lockheed Martin contender in the JSF competitive fly off. Up against the Boeing X-32, two X-35s were built. One of them was initially used to demonstrate the proposed Air Force configuration before it was modified with the vertical lift system proposed for what became the F-35B in USMC service.

With the competition complete, the demonstrators were superfluous and the X-35B airframe made its way to the National Air and Space Museum. Here it sits on display. What is the most interesting part – at least to me – is that they have taken the propulsion system out of the jet and put it on display separately. You can see the main engine as well as the lift fan module, the shaft coupling the two, the nizzle that both have to direct the flow and the roll posts that are used to provide both additional lift and roll control in the hover.

It is a cool demonstration of the basic configuration that is now operational in the F-35B. it has certainly been developed since this design, but the basic principles remain the same. Unlike the Harrier that had the engine in the centre of gravity of the aircraft (not a very convenient location) and redirected all thrust through four nozzles, this configuration has a mighty engine at the rear which can be vectored down when required through a three bearing nozzle that is both simple and ingenious but then a shaft drive from the same engine to a fan module that sits behind the cockpit drawing air from above and directing it down with some ability to vector it too. This forward fan balances against the rear main nozzle. It provides a significantly higher amount of vertical thrust than the Harrier ever managed and allows a larger and more capable aircraft to land vertically at the end of missions. Quite a smart piece of design.

Holding Down the Swordfish

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During the Cosford air show, the Royal Navy Swordfish was part of the display. While it might not be the fastest aircraft from that era, it still has a pretty meaty engine up front. Once started, time is needed to get the oil up to temperature and to run up the engine to check its performance before it goes flying. The ground crew needed to keep the plane anchored while this was done and the way they did this was to hang on to the tailplane. Watching them getting battered by the prop wash while the engine was cycled was rather amusing.

Virgin Atlantic Fin Looks Shabby

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Virgin Atlantic’s jets usually look pristine. Getting the red of the nacelles and the fin to show up in images properly is a bit tricky, but they do tend to look pretty smart. Consequently, I was surprised when looking at some images I took of one of their A350s while taxiing in at Heathrow to see that the paint on the fin seems to be peeling off in chunks. No idea whether that is from the original paint when built or following a repaint, but it looks rough and I imagine that a repair will be demanded at some point soon.