[gurps] vehicle challenge

[Anthony Jackson]

Brandon Cope wrote:
> 
> GURPS WWII (p.148) goes  into more detail on fuel consumption and
> maintenance interval at varying speeds. At "patrol speed" for
> aircraft (30% top speed), fuel consumption is only 1/4 normal.
> However, the trick is not dropping below stall speed in the process.

Hm. That seems unlikely for patrol speed; many aircraft have minimum 
fuel consumption at a fairly high fraction of peak speed. For example, a 
747, at 40,000 feet, has minimum fuel consumption per unit distance at 
somewhere between 500 and 600 mph, and a max speed not appreciably above 
that.

Problem here is that the equations for power and thrust in Vehicles are 
wrong.