F1 engine Vs boeing 747 Engine

Guest · Post 19 Oct 2005, 17:26

Str8up: You are a tiny bit off. Your numbers are for the entire vehicle and yes a 747 is a more efficient way of transporting things than an F1 car

/ Fx

GuestAgain · Post 20 Oct 2005, 17:57

Rif.. wrote:

I would also disagree with Jeppesen on this particular issue. In my opinion, the only legitimate comparison is to give the turbine engined vehicle 1 lb. of fuel and measure how far it travels within a given time period, and then give that same 1 lb. of fuel to the same vehicle, but powered by a piston engine, and see how far it travels in the same time period.

This cannot be a legitimate comparison. Your comparison just tells us the jet engine is less fuel efficent. But then the Jet engine is less efficient that most other engines in many respects.
I think Jeppeson has it just about right ie a comparison based on how much work can be extracted. Though I agree other (better) comparisons can also be made.