Subject:
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Re: Human Powered Helicopter
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Sun, 8 Aug 2004 03:54:55 GMT
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Viewed:
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522 times
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In lugnet.org.ca.rtltoronto, Ivan Louch wrote:
> All of this said, would anyone actually happen to know why this technology seems
> to be widely used only by the “Soviets” and only for military applications? Or
> at least am I not aware of any commercial co-axial rotor designs.
I think there was also a small Canadian built UAV for the US Navy that used
counter rotating coaxial rotors...
http://www.fas.org/man/dod-101/sys/ac/row/cl-327.htm
But 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 one way and given the risk
of aerospace projects, never decided to stray from the usual? Or maybe there's
a limitation we don't know about that type of design?
> - No one reads these anymore.
Calum
--I do.
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Message has 2 Replies:
Message is in Reply To:
 | | 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 (...) (20 years ago, 8-Aug-04, to lugnet.org.ca.rtltoronto)
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