[gurps] Autogyro performance

[Onno Meyer]

> I'm still considering this, but not actively working
> on any designs right now. My goal was two just create
> two fictional WWII autogyros (a four-man and an
> ultra-light one man) I'm not going to need either
> design for a few weeks so I've been working on other
> stuff.

The autogyro question prompted me to write TL8 lightweight
helicopters for 2, 4, 8, and 16 persons. Using helicopter 
drivetrains allowed me to sidestep the stall speed problem,
of course ...