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<blockquote data-quote="HeavenShallBurn" data-source="post: 3625101" data-attributes="member: 39593">There's a group of aeronautical engineers that have developed a rigid-flapping-wing design that&nbsp; works.&nbsp; They've flown a test-bed aircraft that looks to be in the same size range as a Cessna 170 series, maybe thirty to forty foot wingspan about same length.&nbsp; At the moment they're ironing out some problems controlling roll.&nbsp; Given some time I know I have at least one of their papers on a HD and might be able to find some video too.But the point is it has in fact flown.&nbsp; Maybe biological muscles aren't as efficient as a motor, but it proves the underlying mechanics of flapping flight are possible in weight ranges much higher than the usual.&nbsp; So if they could lighten the load a bit somehow (maybe gas bags like a Man'O War) and get a good run-up an object of around the size of Large to Huge dragons might theoretically be able to sustain flight.&nbsp; If it makes you feel better HR that a dragon needs a takeoff run equal to three times its Run speed to take flight and has a stall speed equal to X to compensate.</blockquote>

[QUOTE="HeavenShallBurn, post: 3625101, member: 39593"] There's a group of aeronautical engineers that have developed a rigid-flapping-wing design that works. They've flown a test-bed aircraft that looks to be in the same size range as a Cessna 170 series, maybe thirty to forty foot wingspan about same length. At the moment they're ironing out some problems controlling roll. Given some time I know I have at least one of their papers on a HD and might be able to find some video too. But the point is it has in fact flown. Maybe biological muscles aren't as efficient as a motor, but it proves the underlying mechanics of flapping flight are possible in weight ranges much higher than the usual. So if they could lighten the load a bit somehow (maybe gas bags like a Man'O War) and get a good run-up an object of around the size of Large to Huge dragons might theoretically be able to sustain flight. If it makes you feel better HR that a dragon needs a takeoff run equal to three times its Run speed to take flight and has a stall speed equal to X to compensate. [/QUOTE]

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