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(...) 6.2rpm?!?!? As in, about once every ten seconds? Huh. That's pretty slow. Hmm, looks like you missed something there. The "inner" rotor (which actually has more surface area than the outer rotor) spins at 6.2rpm, but the outer rotor spins at a (...) (21 years ago, 8-Aug-04, to lugnet.org.ca.rtltoronto)
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| | Re: Human Powered Helicopter
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(...) -Iain (21 years ago, 8-Aug-04, to lugnet.org.ca.rtltoronto)
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| | Re: Human Powered Helicopter
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(...) I think there was also a small Canadian built UAV for the US Navy that used counter rotating coaxial rotors... (URL) even if not coaxial (ie, CH-47) there doesn't seem to be any any out there with counter rotating rotors. Maybe they started on (...) (21 years ago, 8-Aug-04, to lugnet.org.ca.rtltoronto)
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| | Re: Human Powered Helicopter
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(...) Even though he only has to spin the rotors at 6.2 rpm and the total weight of all four blades is only 55.4kg, the sheer size of the “wing-span” is indeed daunting! (...) Ohh the co-axial rotors are just beyond sweet! I doubt I can sum it up (...) (21 years ago, 8-Aug-04, to lugnet.org.ca.rtltoronto)
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| | Re: Human Powered Helicopter
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"Calum Tsang" <tsangc@mie.utoronto.ca> wrote in message news:I228rK.tty@lugnet.com... (...) size of guy who has to pedal the damn thing. :) But that's really awesome! Love the counter rotating blades. No tail-rotor! Iain (21 years ago, 7-Aug-04, to lugnet.org.ca.rtltoronto)
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