Re: PERSONAL EMPOWERMENT/TECH Re: personal VTOL only needs...

From: Mike Lorrey (
Date: Tue Dec 11 2001 - 14:07:56 MST

"Michael M. Butler" wrote:
> If you don't shop at the Big & Tall, and if composites are used, 30 shp _might do_. Obviously, MEMS turbines etc. would
> shift things. See
> for the authoritative poop on the 1950s-era Model 1033, XROE-1 Hiller Rotorcycle.
> "Power was supplied from a Nelson H-59, two cycle, 40 hp, four cylinder
 opposed air cooled engine through a centrifugal clutch...."

Ah, that was the ticket. Now, given the weight difference between that
Nelson engine and, say, a Moller rotary engine (and, yes, composites
galore), a 30 shp engine should do the trick. Spike messed up on scaling
those 5 hp radio controlled helicopters, I think, since aerodynamic
efficiency doesn't scale linearly...

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