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#11
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U shaped wings
Dave wrote:
Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ Dave That has to be the weirdest airplane ever... Tony |
#12
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U shaped wings
In article
, Dave wrote: On Jan 5, 10:49*pm, bildan wrote: On Jan 5, 8:26*pm, "Ęslop" wrote: "Jim Logajan" wrote in message . .. Dan wrote: Hul Tytus wrote: rec.aviation.homebuilt U shaped wings * *Some time ago there was a magazine cover showing a twin engine * *aircraft with a U shape in each wing. The U's curved downward then up again with engines and props within the U. * *When did that occur and what magazine was that; anyone know? A * *vague memory points to popular mechanics or popular science. Hul * * Custer channel wing? My thought also. Here are some links: http://www.custerchannelwing.com/ http://www.youtube.com/watch?v=-Sn5JL9t_C4 I would think that an engine out on takeoff would be about 100% fatal. Such a huge difference in lift would cause an immediate wing over and spin. It's essentially a "blown wing" or "powered lift" aircraft. *The only way it would be even remotely safe is to link the props with a cross shaft with Sprague clutches somewhat like the V-22 Osprey. *That way if one engine failed, both props continue to be powered. *Even then it could only be justified for special missions that needed the STOL capability badly. However, a single engine channel wing is possible. Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ Dave I don't think that it got the blown lift effect that the Custer did. The problems with the Custer arose with low speed controllability and asymmetric lift at very low speeds if an engine failed on the twin. Even the single would have similar problems if the engine fails at very low speed, as the plane would now be well below stall speed. -- Remove _'s from email address to talk to me. |
#13
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U shaped wings
Dave wrote:
Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ And another one. http://www.things-with-wings.com/ThingsWings/StipaCaproni.htm |
#14
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U shaped wings
In article ,
Beryl wrote: Dave wrote: Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ And another one. http://www.things-with-wings.com/ThingsWings/StipaCaproni.htm Like the Optica, it is a ducted fan -- not a blown wing. -- Remove _'s from email address to talk to me. |
#15
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U shaped wings
Orval Fairbairn wrote:
In article , Beryl wrote: Dave wrote: Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ And another one. http://www.things-with-wings.com/ThingsWings/StipaCaproni.htm Like the Optica, it is a ducted fan -- not a blown wing. I know. It's in a coffee table book I have, which says the duct/fuselage contributes about 1/3 of the total lift. There was once a frisbee-ish flying toy duct, anybody remember it? |
#16
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U shaped wings
Beryl wrote:
Dave wrote: Not exactly a Channel Wing, but this plane is a fully ducted wing single: http://www.optica.co.uk/ And another one. http://www.things-with-wings.com/ThingsWings/StipaCaproni.htm And I thought the other plane was strange... Tony |
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