> > Mike Lorrey wrote:
> >
> > > personal VTOL aircraft really only needs about 30 hp...
> >
> > Personal VTOL with a payload capacity of about 60 pounds
> > perhaps. Even I can't get down that far.
>
> How do you calculate that? The Hiller backpack helicopter, as I recall,
> was a 35 shp design, and that was in the 1960's.
I gotta go Mike, business trip, back in a few days. One way to
estimate would be to go down to the local RC helicopter club,
get weight vs power requirements for the models, then make
a graph. The 5 hp 2 stroke motors are popular there. I notice
the payloads these 5 hp rigs can hoist, cameras and such, are
around 8-10 pounds. Greg Burch is into RC helicopters, perhaps
he will comment. More in a few days. spike
This archive was generated by hypermail 2b30 : Sat May 11 2002 - 17:44:25 MDT