The engines would be the least of my worries in that thing - like Bob says, it just screams aero instability. It is rather pretty, though...
Sorry for the delay in responding about the F-82's. There are 2 being restored to fly, one in Minnesota and one in Georgia. One of them came from the Walter Soplata collection and a gentleman named Tom Reilly is the main restorer on one but i can't remember which is which. XP-82 Twin Mustang Project: History Here is a link for the propeller's Prop Tested For F-82 Restorations My guess is that we are 2 years away from a first flight. My experience with composite props is A +, they accelerate faster and in my Extra 300 it seems as if the airplane jumps forward even in a vertical climb. My experience with new airfoils for WW2 propeller's is also positive. My Mustang came with blades from an Albatross from the 50's and the acceleration was much better and the propeller was also smoother. The current paddle blade has a horrible harmonic as do all of the original WW2 propellers on Mustang's I can see the composite props becoming very popular and it is a very good sign for the Warbird movement. I was at the airshow where the last F-82 landed gear up Harlingen 1982, saw it make the turn to final and never saw it roll out. I have also witnessed 2 Warbird fatal accidents were the airplane flipped over and the pilot was killed. So at least on the T-28 I know it is in the Pilot's manual to pull the gear up, if you are going to go off the side or end of the runway. A friend of mine did just that about 4 years ago. Much more desirable then flipping on your back. There was a big hoopla over the CAF F-82 that geared up in 1984. The story was that it was to be traded to a famous celebrity (Tom Cruise) and when the government found out they decided that the paperwork issued over 40 years ago wasn't correct and they took it back. Now they have 3 at the same museum.
Oh jeez... having made a nice emergency landing and almost come to a gentle stop... what a bummer. Any landing you can walk away from can't be considered a failure though! I saw an F-82 at the Lone Start Flight Museum in Galveston about 6 years ago, but don't see it listed on their website now. Wacky plane! Can't wait to see them take to the skies. http://www.lsfm.org/ At least I think it was the LSFM, was the one with the B-29 Fifi. I don't know how dimensionally accurate these models are but they fly pretty well! The big one has one of those landings we're talking about here.... but looks like that's really hard to avoid with the gear location. [ame=http://www.youtube.com/watch?v=6ObbtARxe2A]RC Bugatti Airplane Test Flight - YouTube[/ame] [ame=http://www.youtube.com/watch?v=4RDN9jShmGQ]Bugatti 100P Racer napos nap / sunny day... - YouTube[/ame] And a walk-around of the sole surviving 100p (non flying) at the EAA Museum in Oshkosh: [ame=http://www.youtube.com/watch?v=1233KxLNXYs]Bugatti Air racer.AVI - YouTube[/ame] It's a gorgeous thing indeed in person.
Over on an RC Forum in a discussion on props I clipped part of F4U's response about the F-82 and LG and got this interesting response from a crop duster/mechanic in west Texas: "Oh jeez, the F-82. Yeah, I worked on that thing when it was at the CAF, it's a sad story. They couldn't source the opposite rotation prop that was damaged in the incident, and it languished in the back of the museum or outside in the elements until someone wanted to trade a P-38 for it. Govt. reneged on the paperwork, saying it wasn't valid (even though it was struck from the inventory) and reverted to the "gate guard" contract that was in effect decades before the paperwork was released to the CAF. They essentially shanghai'd it back into the Air Force inventory. Had MT started work on warbird props 10 years ago, or Hamilton-Standard not quoted $100,000+ for a single prop, the whole fiasco wouldn't have happened (I say that, but you know how the govt. is when it wants something). If I had to choose one prop manufacturer to survive on Earth, it would be MT. They're far ahead of everyone else, and even though they haven't seen the legacy prop manufacturers in their rearview mirror for years they're still going full throttle...it's great news to know they're getting into the warbird market. Since we're already way off-topic, the gear retraction conundrum...that's a tough one. I'd say it really depends on the type of gear you have as to whether it will save your skin or not. A P-51...you're just asking for trouble because those gear don't fold in at the same time. With one gear collapsed and the other extended, you're much more likely to get into serious trouble because you've lost ALL directional control. Corsair...sure, those gear will fold rearward and you'll slide around on the belly. P-38...well we all know it lands on the belly rather well, and the gear retract rearward, so we're good Some aircraft are actually designed with belly landings in mind, like the A-10, Bellanca Super Viking, Yak-52, etc. All that in mind, I don't think anyone would have the foresight to raise the gear during a landing gone wrong...if you've hit the mains on the runway and something goes wrong, you're fighting it until it goes off the runway, and you're probably trying to fight it out in the pasture all the way up to the ground loop or flip. You're not thinking, oh this could end up badly, let me raise the gear to mitigate damage to the airframe just in case...you're thinking TURN LEFT TURN LEFT TURN LEFT TURN LEFT or something to that effect. It just happens too fast, the landing is going fine until it happens then the point of possibly being able to recover, imminent doom, and coming to a complete stop happens way faster than the landing gear system could possibly hope to retract or collapse the gear, much less enough time for you to think and react. If you had a different situation, where you were flying and an emergency landing off-field was imminent, it would depend on a number of factors like terrain (down a hill or mountain would take forever to get stopped, but might only take a few seconds on the belly), hard or soft surface (sand or a plowed field would cause a nose-over), length of field available (if you only have 600ft to stop a warbird, gear up so you stop in the shortest amount of time), obstacles (gear up), time to impact (if you don't have the time to extend, you'd rather have the gear fully retracted than risk landing with them partially down and suffering additional gear damage), and nature of emergency (if you lost a tire or one gear won't come down, gear up is best solution). A lot of guys seem to forget that these airplanes routinely took off and landed on unimproved fields, bouncing along the countryside until they were airborne. They can handle a lot of punishment, but you have to have a little experience with it and trust the old bird. No telling how many gear up landings out in a field caused damage where it would have been fine had the guy just dropped the gear and rode it out. I like my AgCat...you don't have to think about things like that when the engine quits, you don't even have enough altitude to think about that stuff before you put it down in a field LOL "
What if there were two pilots in an F-82 which was landed too hot on a runway, and was nearly to the end of the pavement...and one pilot selects gear up, but one pilot wants to leave it gear down?
Same thing could have happened when Sully landed in the Hudson. In short, there's only ONE pilot in a given plane. I think I read that only the first couple F-82 prototypes had 2 cockpits. The later planes had a pilot and navigator (without flight controls).
Horrible way to die if the pilot with control had a heart attack. Which side did the man in charge sit on?
Left, as usual. Why die? Not really any different than the 'guy in back' in a Tomcat, or whatever... That's what parachutes are for.
I keep thinking about scale effect, lower mass, lower inertia, higher power to weight ratio that a model would have to make it fly successfully. It still doesn't look right and is typical of the creative and rather flamboyant art style of Etorre Bugatti. One thing that bothers me is the swept forward wing and the possible adverse stall progression. Three gear boxes and two CV joints in the power train doesn't thrill me either. Just my old fashion uneducated gut feel that could be totally wrong.
Which I think saved the test pilot. If the Germans had thought it had any merit, they would have not hesitated to exploit it. But, as said before - it was indeed very pretty. (but then - so were some of the Jack Northrop flying wings...)
I posted a question on the 100p's facebook page asking what kind of simulations or wind tunnel tests has been done, and got this response: "Kurt: Our god friend Professor Paulo Iscold (he teaches in Brazil) is conducting a study of the plane's aerodynamic performance and flight characteristics. It's all relatively straightforward; we expect no surprises." Maybe the "good friend" typo was a Freudian slip
At any rate, it is now just an anecdote to history - but a very interesting one. It no longer matters to anyone sane, but somehow - I still like this weird airplane.
There are many R/C models of the Bugatti flying - but one must remember that models are typically over-powered when compared to full scale. And, as MacAir has shown, with enough power...
You are right on, Russ. Any kind of model including mail boxes can be made to fly. Low Reynolds numbers and scale effect have a great effect on models that doesn't reflect full scale flight. You diminish the size of the vehicle but you can't diminish the viscosity of the fluid in which you fly the model. Model power is greater than the full scale counterpart and, again, the fluid environment is unchanged and the results do not mimick full scale flight.
Also, you do not have to ride in it - one can always claim "Radio Failure" when the bad thing happens.
? They plan on flying the recreation, so even if the original was never flown we should know one way or another whether it would have flown, and how well.
I'm no expert, but with the weight of the two engines and associated drivetrain, the wing loading on the Bugatti looks to be quite high.
It seems to me that I read somewhere that around 1/3 of all the Me-109s were wrecked in ground accidents because of the narrow gear.
From Dec. 1941 to Aug. 1945 the U.S.Air Forces lost 14,903 pilots and crew and 13,873 airplanes---- inside the U.S. We witnessed this in our neighborhood in Fla. when there were training crashes almost every day. In combat 22,948 airplanes were lost and another 20,633 were lost to non combatant causes. Over the length of the war 220 service men died per day, 6600 per month. Willy Messerschmit refused to change the splayed out landing gear a set up with some camber because it would have caused a bump in the upper surface of the wing when the gear was retracted. I recall something like 8000 fatal landing accidents in new ME109 pilots when they ground looped and flipped over. The trunnion support forging was also weak and contributed to some ground accidents.
One of the good things about the FW-190; the gear folded inward... very wide stance. I read that Grumman looked very closely at a captured FW-190 when they were designing the Bearcat, which has similar gear layout. Of course, also with our Navy's absolute insistance on an air-cooled engine, and the plane was a lot lighter than the previous Hellcat. (Not all FW-190's had air-cooled engines).