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shdw · July 3rd, 2009, 00:23

Tgray: does that graph on the left take into account engine propeller efficiency?

If so we will have to find some sort of rule or unwritten rule of thumb that designers bench off of to give the RPM graph. Meaning if they build the aircraft and equip it with a prop that will give it that similar graph. I think the RPM graph would be the only graph in question as it has more than one factor involved in performance.

The MP graph should remain fairly consistent as long as engine efficiency is the same I think, right?

July 3rd, 2009, 00:23	#65
shdw Senior Member Join Date: Mar 2009 Location: Bridgewater Posts: 1,108	Re: Running props over square? Tgray: does that graph on the left take into account engine propeller efficiency? If so we will have to find some sort of rule or unwritten rule of thumb that designers bench off of to give the RPM graph. Meaning if they build the aircraft and equip it with a prop that will give it that similar graph. I think the RPM graph would be the only graph in question as it has more than one factor involved in performance. The MP graph should remain fairly consistent as long as engine efficiency is the same I think, right?