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analog wrote:Artagel wrote::.... There were lots of personal jets on display. Honda demonstrated one that's quiet as a vacuum cleaner.
barfle wrote:One of the planes on exhibit at the Udvar-Hazy center (Dulles) is a Bede BD5. That reminds me more of an Indy car than much of anything else. It's a single seat, with the cockpit barely big enough for the pilot.
It was one of the planes my dad really liked, because at one time he was considering building one. That didn't happen, but he certainly was knowledgeable about the plane. Bede Aircraft built a jet powered prototype, the BD5-J, that had a longer wingspan so it looked for all the world like a U2 on a diet. I don't believe the cockpit was pressurized, so the ceiling was pretty low, but it sure looked like fun.
analog wrote:As I recall, Jim Bede ran into a snag with supply of those little jet engines.
barfle wrote:But they sure are cute.
Wouldn't the second prop just thrash the air uselessly in the wake of the first? The air has already been accelerated and deflected and the second prop comes along and tried to deflect it the opposite way and create thrust with it?
It seems so . . . counter-productive
Shapley wrote:I believe the purpose of the second prop it to counteract the torque, not to enhance the thrust.
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