Altitude, Mixture and Fuel Flow
Altitude, Mixture and Fuel Flow
Could you experts out there help me in my reasoning?
A normally aspirated piston engine with no altitude compensator for the mixture will, at altitude, have a richer mixture. If climbing at full throttle manifold pressure is decreasing. Likewise, reducing exhaust back pressure is increasing the volumetric efficiency. Which effects are dominant? Does the fuel flow go up or down
Overall, I believe that reducing EHP is dominant and the total fuel flow also goes down, notwithstanding that the mixture is richer.
Notice I have specified full throttle at all heights. I am not comparing range performance at various heights
Thanks, Dick