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#11
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![]() "Bertie the Bunyip" wrote in message .. . "Darkwing" theducksmail"AT"yahoo.com wrote in : "Matthew Speed" wrote in message ... On Sun, 18 Nov 2007 15:00:26 +0100, Stefan wrote: I've just stumbled over this picture. Does anybody know what kind of engine this is? http://www.airliners.net/open.file?id=0537804&size=M Looking at that picture it seems to me that it would much easier to damage that engine with the blades exposed like that. Given the rate at which turbine engines rotate wouldn't the engine be subjected to extreme stresses if one of the blades were to be damaged? I was always told that the engine on a prop plane would probably get ripped out of the mounts if a prop lost a blade so I don't think it is good on any engine! It will. one of the guys in my EAA chapter lost a blade on his Tailwind. The prop was an "experimental" McCauley clip tip prop IIRC. The mounts broke completely, but the cowling, throttle cable and what not kept the engine on board. He deadsticked back to the field. The Navy called up asking f anyone owned the blade later that day. it had landed in someones back yard just missing the lady of the house as she was hanginr her laundry! It's happened many times over the years, in fact. There was one in england where the engine on a Navajo shed a blade, the engine came off, and the engine went over the top of the fuselage and took out the second engine. the guy succesfully deadsticked the airplane into a field.. Bertie I was told that if the engine came out that you would probably be so far out of CG you would crash tail first. So that surprises me that the Navajo made it down under control. |
#12
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"Darkwing" theducksmail"AT"yahoo.com wrote in
: "Bertie the Bunyip" wrote in message .. . "Darkwing" theducksmail"AT"yahoo.com wrote in : "Matthew Speed" wrote in message ... On Sun, 18 Nov 2007 15:00:26 +0100, Stefan wrote: I've just stumbled over this picture. Does anybody know what kind of engine this is? http://www.airliners.net/open.file?id=0537804&size=M Looking at that picture it seems to me that it would much easier to damage that engine with the blades exposed like that. Given the rate at which turbine engines rotate wouldn't the engine be subjected to extreme stresses if one of the blades were to be damaged? I was always told that the engine on a prop plane would probably get ripped out of the mounts if a prop lost a blade so I don't think it is good on any engine! It will. one of the guys in my EAA chapter lost a blade on his Tailwind. The prop was an "experimental" McCauley clip tip prop IIRC. The mounts broke completely, but the cowling, throttle cable and what not kept the engine on board. He deadsticked back to the field. The Navy called up asking f anyone owned the blade later that day. it had landed in someones back yard just missing the lady of the house as she was hanginr her laundry! It's happened many times over the years, in fact. There was one in england where the engine on a Navajo shed a blade, the engine came off, and the engine went over the top of the fuselage and took out the second engine. the guy succesfully deadsticked the airplane into a field.. Bertie I was told that if the engine came out that you would probably be so far out of CG you would crash tail first. So that surprises me that the Navajo made it down under control. Well, only one of them came off. the other just quit. You're right, though .On a single you would have little chance. There was a Stearman that the engine came off of and they did make it, or so the story went. The Navajo wasn't all that long ago. there must be some pics somewhere. Bertie |
#13
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Bertie the Bunyip wrote:
Stefan wrote in news:156cb$4740457b$54487377 : I've just stumbled over this picture. Does anybody know what kind of engine this is? http://www.airliners.net/open.file?id=0537804&size=M Yeah, it's the GE unducted fan from the late eighties. The idea was to make an engine that was more fuel effecient and quiter. AFAIK it was neither. The props were slightly supersonic and very noisy. A friend of mine saw it at an airshow around then adn thought it sounded like a Mustang. I never got to see (or hear) it, but it was featured prominently on company calendars when I worked at McDonnell Douglas. That same airframe, earlier in its life, stars in a piece of video floating around the web. A hard landing in a flight test caused the entire empennage to break off. Here's a copy of the video: http://www.youtube.com/watch?v=WUUcxEOniz8 |
#14
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G.E. Unducted Fan. Bottom line: it worked well but was too noisy. Read
about it he http://en.wikipedia.org/wiki/General_Electric_GE-36 I seem to remember reading that it was so loud, that the ground crew was near physical nausea from the level and nature of the sound. -- Jim in NC |
#15
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![]() "Dave" wrote G.E. Unducted Fan. Bottom line: it worked well but was too noisy. Read about it he http://en.wikipedia.org/wiki/General_Electric_GE-36 As far as the working well, the link you provided said it had very poor efficiency. -- Jim in NC |
#16
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--------much snipped---------
I was told that if the engine came out that you would probably be so far out of CG you would crash tail first. So that surprises me that the Navajo made it down under control. Well, only one of them came off. the other just quit. You're right, though .On a single you would have little chance. There was a Stearman that the engine came off of and they did make it, or so the story went. The Navajo wasn't all that long ago. there must be some pics somewhere. Bertie I heard of a similar and long ago case in which the engine came off of a "bathtub" Aeronca and the pilot managed to land it safely. I suppose that the Aeronca would have been the easiest of them, but it's still high up on the list of places and times that I am glad to have been absent. I don't even want to think about the other two! Peter |
#17
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"Peter Dohm" wrote in
: --------much snipped--------- I was told that if the engine came out that you would probably be so far out of CG you would crash tail first. So that surprises me that the Navajo made it down under control. Well, only one of them came off. the other just quit. You're right, though .On a single you would have little chance. There was a Stearman that the engine came off of and they did make it, or so the story went. The Navajo wasn't all that long ago. there must be some pics somewhere. Bertie I heard of a similar and long ago case in which the engine came off of a "bathtub" Aeronca and the pilot managed to land it safely. I suppose that the Aeronca would have been the easiest of them, but it's still high up on the list of places and times that I am glad to have been absent. I don't even want to think about the other two! Well, the Aeronca probably floated down like a sycamore leaf! It's gross was well under 1,000lb IIRC and the wing loading was very low. They probably weren't under any kind of control to speak of.. Bertie |
#18
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![]() "Peter Dohm" wrote in message ... I heard of a similar and long ago case in which the engine came off of a "bathtub" Aeronca and the pilot managed to land it safely. I suppose that the Aeronca would have been the easiest of them, but it's still high up on the list of places and times that I am glad to have been absent. I don't even want to think about the other two! I remember a story, long ago, I believe in Flying magazine. Where I think a training flight was involved in a mid-air. IIRC, it was a Cessna that lost a very large amount of the left wing. I'm thinking to the strut, but maybe just to the end of the aileron. At any rate, the instructor immediately dove the aircraft for airspeed and returned a short distance to the airport maintaining an airspeed of 140 knots plus, and full control deflection, and managed to land the aircraft. Been a very long time, so I probably have many of the details wrong, but perhaps someone else will remember as well. Anyone? |
#19
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![]() "Darkwing" wrote I was always told that the engine on a prop plane would probably get ripped out of the mounts if a prop lost a blade so I don't think it is good on any engine! I think it's clear that it does happen, but it is also true that many engines lose prop blades, and the engine stays with the airplane. I'll bet many more stay, than depart. -- Jim in NC |
#20
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"Maxwell" wrote in
: "Peter Dohm" wrote in message ... I heard of a similar and long ago case in which the engine came off of a "bathtub" Aeronca and the pilot managed to land it safely. I suppose that the Aeronca would have been the easiest of them, but it's still high up on the list of places and times that I am glad to have been absent. I don't even want to think about the other two! I remember a story, long ago, I believe in Flying magazine. Where I think a training flight was involved in a mid-air. IIRC, it was a Cessna that lost a very large amount of the left wing. I'm thinking to the strut, but maybe just to the end of the aileron. At any rate, the instructor immediately dove the aircraft for airspeed and returned a short distance to the airport maintaining an airspeed of 140 knots plus, and full control deflection, and managed to land the aircraft. Been a very long time, so I probably have many of the details wrong, but perhaps someone else will remember as well. Anyone? Probably happened a few times, but it happened to a guy I used to work for, in Detroit City. His name was Chuck Weldon and he collided with a police helicopter over the detroit river while he was on the ILS and in IMC. the chopper was scud running up the river and it went in killing both cops. Chuck lost the left wing outside of the left nacelle, the left fin and much of the left stab. He firewalled the left engine and brought the right one back and managed to do a skewed sort of approach and crash onto the airport. they both walked away from it, but were arrested for manslaughter and it actually went to trial! He got off, obviously ( the way he told it it was just a rabid reaction by the Detroit Police, which is believable) and he spent the next six months in court suing them for the loss of his airplane, which he also won. While this was going on, two of his other airplanes crashed on the same night! One in Cleveland and one in Detroit. I think it was the one in detroit where they accidentally switched off both mags with the crash switch instead of turning on the heater at rotation. They went through two houses but survived. The captain even went back to flying again after being in a coma for six weeks. They;re gone now, but they were known as Flight Express Cargo Chuck had been one of the original FedEx pilots way back and had gone off on his own to make his fortune with Flight Express. I think we had eight accidents, Three of which were Chucks. They were all in rhe mid to late 70s for thos morbid sorts that like to look up stuff in databases. Bertie |
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