Russell Kent wrote:

Paul wrote:

Where ever I go and the subject of aircraft engines comes up I
am always amazed at the mis-information out there. Next year
I am thinking of offering a forum at OSH on engine fundamentals.
The first thing I think I will do is pass out a quiz.

[snip]

Can anyone think of any other questions I can ask?

My hangar neighbor says he's getting 180 HP on 4.2 gal/hr.  How can I
prove he's full of it?

Russell Kent

Well tell him the best aircooled aircraft engines in the world
burn .45 pounds of fuel per HP, per hour. Period! No if ands or buts.

Gasoline weighs about six pounds per gallon so he is using 25.2 pounds
per hour. His engine is generating 25.2/0.45 or about 56 HP!!! at that
fuel burn like it or not. He must be gliding.
 
Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org