[extropy-chat] thank evolution for the interstate highway system

[Major]

"Spike" <spike66 at comcast.net> writes:

> The equations for power requirements as a function of rotor
> length are well understood Don.  Textbooks on VTOL design
> are available at your local university.  There is a very 
> good reason why choppers have long rotors, and why sailplanes
> with long skinny wings have a more efficient glide slope
> than high powered aircraft.

Jet VTOL is possible, and has been don. It's called the Harrier.

Having listened to on take off at an airshow (500m away), I would not
want my neighbor to use one for his daily commute though.

Major