Can some one please explain why there are two cruise performance charts one best power and the other best economy. The obvious answer= one is used to conserve fuel (best economy) the other for more speed(best power). Now.... Looking at the Eng. Perf. chart i can determine that at 6000ft D.A., 65% pwr.= approx2450RPM. Looking at the Cruise perf. chart(best power) i can determine that @ 65% pwr=2450RPM i will go a bit over 120MPH. Now if i look at the cruise performance(best economy) @ 65%=2450RPM i will go about 112MPH. How can this be with the same RPM 65%2450RPM. Am i forgetting something? /ubbthreads/images/icons/tongue.gif
PA-28 Performance Chart????
- Thread starter PA44
- Start date
IrishSheepdog
Sitting in the median
Mixture. If you lean for best economy at that altitude, you will have a slower speed. If you lean for best power (peak RPM then forward), you will get a higher speed.
The RPM settings are the same, however how you lean the engine will determine the performance and speed.
The RPM settings are the same, however how you lean the engine will determine the performance and speed.
