AlexPeterson
Well Known Member
I went for a short hop today, and collected a little data. I fixed rpm, and set MAP to various settings. I was not scientific about mixture, but basically just went lean until a noticeable airspeed drop, then nudged it back in. The idea was to start this process, not to rigidly claim this data is correct.
The engine is a O360, FI/EI. The 4500' was pulled out of thin air, pun intended.
Here are the results:
Although this is somewhat noisy data, it does appear that peak mileage is in the 110 to 120 KTAS range. Collecting the data is a little tough in the lower speed areas, as it takes a bit longer to stabilize things. In fact, I'm not sure the speed was completely stabilized at the lower speeds.
The next step for this is to do somewhat the same thing, but gather data from a bit ROP to LOP for each MAP setting. Further expansion will be to do this at various altitudes.
The engine is a O360, FI/EI. The 4500' was pulled out of thin air, pun intended.
Here are the results:
Although this is somewhat noisy data, it does appear that peak mileage is in the 110 to 120 KTAS range. Collecting the data is a little tough in the lower speed areas, as it takes a bit longer to stabilize things. In fact, I'm not sure the speed was completely stabilized at the lower speeds.
The next step for this is to do somewhat the same thing, but gather data from a bit ROP to LOP for each MAP setting. Further expansion will be to do this at various altitudes.