Tag Archives: museum of flight

Vietnam Memorial B-52G Is Complete

The Vietnam Veterans Memorial has been under construction for a while including the restoration of the B-52G, Midnight Express that spent many years outside at Paine Field. The opening ceremony took place over the Memorial Day weekend and I went along to check it out. I wrote an article for GAR about the ceremony and, if you want to read that, you can see it here.

The article includes most of the good images from the event so I won’t duplicate it all here but instead I shall just post a couple of shots that summarize what happened.

XF8U-1

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I certainly won’t stand out from the crowd by claiming that I am a bit of a fan of the F-8 Crusader. Plenty of people think it is a cracking jet. I didn’t get to see many of them. French Navy jets were still in service and, while the RF-8s were in use with the Navy at the beginning of my interest in aviation, I don’t think I ever saw in in service example. Doesn’t stop me liking them though. The Museum of Flight has the prototype jet in their collection. Prior to the unification of the type identifiers between the services, it was known as the XF8U-1.

I first saw it while it was undergoing restoration at the museum’s facility at Paine Field. My first visit there was when it was free. You could just show up and wander around. Now you have to pay to get in but it is still a good visit to make. Restoration is when things are a lot less glamorous but you do see the work underway to makes things look great.

Now the jet has been moved to the main museum facility at Boeing Field. It is polished to a fine finish and is complete with an air data boom. The markings it carries appear to be authentic based on some original photos of the aircraft and, with its location close to the window, it does gleam nicely. Oh to find someone with a lot of money and a desire to have one of these jets airworthy again.

Lear Fans

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Early efforts at composite business aircraft did not go smoothly. The Beech Starship ended up being a burden on the company and they bought most of the planes back and destroyed them. Prior to the Starship, there was the Lear Fan. A project started by Bill Lear and continued after his death, the idea was a composite aircraft with two engines driving a single pusher propeller. The light airframe and plenty of power was to provide great performance. Sadly, the early approach to composite design did not go smoothly, nor did the gearbox design to combine the two engines to one propeller.

The project folded after three prototypes had been built. All three still remain and I have seen two of the three. One lives in the Museum of Flight here in Seattle while another is in the Frontiers of Flight Museum at Love Field in Dallas. The third one is in Oklahoma City so I am a bit annoyed I never knew that when I traveled there regularly. Still, two out of three isn’t bad. The single prop looks pretty chunky (the idea being that single engine handling was identical to twin engine handling) and I imagine the diameter had to be limited to avoid prop strike issues during rotation. Overall, it is quite a neat looking design. A shame it was a bit ahead of the technology curve when it was designed and built.

Ready to Move a B-52?

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Sleeping through an event is not clever but I have an excuse. I had guests! The Museum of Flight has a Boeing B-52G Stratofortress that has long been stored outside up at Paine Field. Recently, the airframe has been repainted in preparation for its move to the museum location where it will go on display. The following shots show it in its painted state and then in the disassembly process ahead of the move. Some of the components were already at the museum when I last visited including the engine nacelles.

The plan was to move it down overnight during the weekend. I had intended to track the movement and get some shots of the plane out on the streets. Unfortunately, while Mum was staying with me, I sort of forgot that was my plan and woke up on the Sunday morning that it arrived and realized I had missed the whole thing. Doh!

Concorde

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Few would argue that Concorde is an elegant aircraft design. It may have had commercial limitations, but it never failed to be a head turner. Getting good shots of it when it was flying was not too difficult. One the ground it can still be a good subject but having it confined in a tight space does make things a little more tricky. The Museum of Flight’s example is in their covered annex across the street from the main museum. The annex has a great selection of aircraft but they are right up against each other.

I decided, after getting some shots on an initial visit, that I would try something a bit different and took a fisheye the next time I went. Concorde already has some interesting curves and a fisheye can either help of ruin them so some careful framing was required. I combined that with a 70-200 to crop in close and avoid the surrounding clutter. It was a fun experiment to see what you could achieve in a constrained environment.

The First 737

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The Museum of Flight has a number of prototypes of Boeing airliners. They have the first Boeing 737. This is a 737-100. Very few of these were built with the 200 series being introduced soon and then taking over completely until the introduction of the 300 series many years later. (For those of us of a certain age, the 200 series was known as the Classic once the 300/400/500s came into service. Today they are often called Classic when compared to the NG models which are, themselves, now being superseded by the Max.)

The first airframe ended up with NASA being used for testing duties of all types. At the end of its testing career with NASA, it made its way back to Boeing Field and to the Museum of Flight’s outside collection. These are now under cover with a roof having been built over the many aircraft. The 200 series is a pretty short jet but the 100 is even more so. It is quite something to see this aircraft and compare it to the big aircraft that are now the staple of Boeing’s output. The Max 10 will be nearly 50% longer than the original.

The aircraft is displayed in its NASA colors rather than the original in-house colors when it was first built. Also, since NASA used it for a variety of odd tests, it has a bunch of additions from those test activities. Since it is parked in amongst the 787 and 747 test aircraft and is kept at the far end of the space, it is a little lost I feel. However, when you contemplate its place in the history of airliner development, it really is a very significant plane. There was a time when Boeing contemplated selling the whole program. How different things could have been!

Boomer Position in a 747

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If you think of aerial refueling tankers, the Boeing 747 is not going to be the first plane that jumps to mind. However, a tanker version of the 747 was developed and is in service to this day in Iran. I haven’t seen one of those planes but, before they were built, Boeing undertook testing of the configuration on their testbed, the original 747 prototype. This is on display at the Museum of Flight in Seattle. When we were walking through the fuselage, we got to the read and found the boomer station. Apparently, it was not removed after installation. It looks remarkably similar to that from a KC-135 so I guess they ported the design across rather than come up with something significantly different.

Trailing Static Cones

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For the people that don’t care for my aviation posts, this one won’t be of interest. For the aviation fans that don’t care about the techie stuff, this will also be of limited interest. That probably leaves a very small group of readers by now (Gary, I am trusting you are still here). This is about a piece of flight test instrumentation that often causes questions when people see it. It is the trailing static cone.

The aircraft has sensors that measure air data, two of the most important of which are the pitot probe and the static port. The pitot probe measures the dynamic pressure of the air which increases as the speed increases. The static port measures the air around the aircraft. The difference between the two is used to determine the speed of the aircraft and the static is used to determine the altitude. These are both vital information for a pilot. However, the aircraft affects the flow of the air around it so, while you can calculate what the pressures should be, you need to validate what the actual readings are. The first flights are carried out prior to calibrating the system so you need to have a bit of margin in the speeds you use until you have confidence in the readings.

Measuring static pressure is hard to do. The plane will have a static port on the skin of the plane as well as possibly incorporated with the pitot head. However, the air has accelerated to go around the fuselage so it is assumed to have a lower pressure than ambient. Because the plane is disturbing the flow, you need a way to measure the pressure some distance away from the plane. The answer is a trailing static cone.

This cone incorporates pressure measurement sensors and it attached to a long cable. This is held on a reel inside the aircraft and fed out of the aircraft at the rear. For airliners, this is usually through a modification to the top of the fin. A comparison between the test aircraft and a production jet will show the different structure. The cable dangles out of the fin and, as the speed increases, the cone pulls the cable taught and streams backwards.

When the testing is required, the cable is winched out and the cone is a long way behind the aircraft in what is relatively undisturbed airflow. If you go to the Museum of Flight, the prototype 747 is on display and it includes the trailing cone equipment in the fuselage. The reel is shown in its mounting location and the trailing cone is hung inside to allow you to take a look at it.

F1 Engines (New and Used)

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I was too young to see a Saturn V launch. My one and only space launch has been a shuttle flight and that was very impressive. I can only imagine how cool the Saturn V was to witness. Maybe when the new generation of heavy launchers comes into service I will get to see something similar. The power for the first stage was provided by the F1 engines, five of which were clustered together. We made a trip to the Kennedy Space Center a long time ago and a Saturn V is on display there lying on its side. You can get face to face with the engine nozzles.

More recently, we checked out the Apollo exhibit at the Museum of Flight, here in Seattle. They have a display of an F1 engine but this one is not looking so pristine. This is because it is a used engine. Not just used as in test firing used but used as in flew on a mission, free fell to the ocean, hit the sea at speed, sank to the bottom of the Atlantic and stayed there for decades. Jeff Bezos, founder of Amazon, funded a project to recover the engines from Apollo 12.

The nozzle is gone which is no surprise given how thin it is as you can see in the pictures of the undamaged version. However, the combustion chamber and the turbopump seem to have come through the experience in remarkable shape. The injector plate is also on display and has been pulled out of the assembly to show it off more clearly. The F1 was quite a feat of engineering – 1.5 million lbs of thrust and the pinnacle of 60s technology.

Preserved American Airlines 727

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The Museum of Flight in Seattle is currently in the process of building a new facility. While the work is underway, a number of airframes have been moved from their previous location to alternative spots until they can be moved to their new home. Most of them are still near the museum itself. However, the 727 seems to have drawn the short straw and it was parked up on Clay Lacy’s FBO ramp while I was visiting. It was near Joe Clark’s Learjet as well. Some cool stuff to look at for any visiting jets at the FBO!