Originally Posted by
bookworm
In the same way that everyone wants the lower specific fuel consumption associated with proper leaning provided it does no damage to the engine, I'd like to have the lower SFC associated with lower RPMs with the same proviso.
I have found the value of lower RPM in economy cruise to be high. In LOP operations so Power is directly propotional to fuel flow, I get 10-12 kts indicated airspeed higher at 15.5 gph 2200 vs. 15.5 gph 2500 - translating into 8% better mpg and still out of the red box (30 LOP).
Thanks for the link BW.