Michael M. Butler wrote:
> ...Calculations suggest that Rotons could work all the way out to where air
> acts in a Newtonian way. That's a lot higher than the operating altitude of
> a chopper.
> And of course you're only using the rotor for *part* of your lift. That's
> another difference from regular helicopters.
> Not promoting, just reporting.
> And rockets, all by themselves, are still the prizewinners at inefficient.
yup. mine was a post that i am afraid may haunt me for some time to come. i detracted before i understood the most recent version of the concept. spike