What is the rotation per second of an aircraft propeller?
Asked by
benjemin (
13)
October 5th, 2011
An aircraft needs thrust enormously. Unless the propeller produces the thrust it can not move.
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For a Cessna 172 apparently the normal range is between 2100 – 2550 RPM. (Divide by 60 to get RPS. It’s not a normal measure of rotational speed.)
Welcome to Fluther. (Another interesting first question.)
The propeller of an aircraft rotates 1000 times per minute.
I’ve heard that one of the limits on propeller rotation is that the tips must not exceed the speed of sound, because the resulting shock waves would lower efficiency.
Judi, thanks for that answer. I learned something from it and the website is imformative. jp
@Judi .. the calculator you provided is for a watercraft. the OP is asking about aircraft.
OOps. I just asked my Pilot husband and he said almost the speed of sound. (at the tips.)
@Judi great answer!
A major factor that is not on this chart would be how much the plane and passengers weigh. I would think that has a great impact on how fast the propeller has to turn for the plane to fly.
Of course, the answer I want to give is: African or European?
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