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Old Jul 12, 2013, 07:04 PM
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Human powered Quad

Winners of the Sikorsky prize for human powered helicopter flight:

Atlas Human-Powered Helicopter - AHS Sikorsky Prize Flight (1 min 45 sec)
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Old Jul 12, 2013, 11:22 PM
DIY Mania from Taiwan
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awesome vid
thanks for sharing
regards
Sam
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Old Jul 12, 2013, 11:53 PM
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I'd like to see more on how the bike drive train is connected to the long drive cords that wrap around the base of the props.
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Old Jul 13, 2013, 07:52 AM
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I thought to win the Sikorsky prize, the flight had to be out doors and cover some minor distance. Have the rules changed? Who would have ever guessed that quad configuration could be powered by a human. A big WOW, I am truley impressed!

Gene
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Old Jul 13, 2013, 08:03 AM
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Here are a couple of things that I find interesting about this (amazing) copter.

1) The bicycle frame is suspended by strings only...no rigid frame work connecting the bike to the rest of the copter.

2) The pilot uses weight shift (or possible tilting the bike) for some minor control. The copter drifts a little to the left during the flight and the pilot leans right to compensate.

I believe this contest for human powered helicopter flight has been around for decades. Kudos to the Toronto team for some fine engineering and for winning the Sikorsky prize.

ps Sikorsky contest details
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Old Jul 13, 2013, 09:02 AM
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Leadfeather,
The current rules are from 1980. I believe there were previous rules to this. I remember something about this in the 60's. Being an engineer, I have been always been interested in this kind of endeavor.
Gene
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Old Jul 13, 2013, 12:33 PM
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Respect!
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Old Jul 13, 2013, 01:03 PM
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I see how they transfer the power from the bike now. Much smaller horizontal wheel right under the pedals.
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Old Jul 13, 2013, 02:24 PM
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Hmm, I think the transmission lines wrap around the pedals hub? I don't understand why the rear wheel is still on the bike frame, though, so probably I don't have the entire picture
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Old Jul 13, 2013, 03:12 PM
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I think you are right. Looks like either the pedal hub or the rear wheel. I'm thinking the rear wheel has a line around it moving the rear prop with the rear prop running lines to the other props.
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Old Jul 13, 2013, 06:19 PM
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The rear wheel appears to be running at a very high gear ratio. I believe it is an energy smoothing device, or in other words, a flywheel.
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Old Jul 13, 2013, 08:05 PM
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Sounds about right. Probably doubles as a drive train and stabilizer.
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