Forgive me for being an engineer and asking an engineer type question.
For a given engine operated at a specific RPM at static conditions, how does the horsepower, static thrust, and fuel consumption vary vs changes in diameter of the propeller and pitch of the propeller?
Lets say an C85-12F run at 2200 rpm. A 72.5 inch propeller at 44 inch pitch vs a 71.0 inch propeller at 44 inch pitch. Then say the same engine and rpm with 71 inch propeller and 42 inch pitch and at 46 inch pitch.
Using the 71/42 prop, I would assume it would have the lowest fuel consumption. Any increase in diameter or pitch would require more throttle opening, a higher manifold pressure to keep the propeller spinning at the same 2200 rpm. Am I correct?
And then the next part, would there also be an associated engine operating temperature change associated with the alternate propeller sizes and pitch, when the engine is run at the one specific rpm?
Thanks,
Deanna
For a given engine operated at a specific RPM at static conditions, how does the horsepower, static thrust, and fuel consumption vary vs changes in diameter of the propeller and pitch of the propeller?
Lets say an C85-12F run at 2200 rpm. A 72.5 inch propeller at 44 inch pitch vs a 71.0 inch propeller at 44 inch pitch. Then say the same engine and rpm with 71 inch propeller and 42 inch pitch and at 46 inch pitch.
Using the 71/42 prop, I would assume it would have the lowest fuel consumption. Any increase in diameter or pitch would require more throttle opening, a higher manifold pressure to keep the propeller spinning at the same 2200 rpm. Am I correct?
And then the next part, would there also be an associated engine operating temperature change associated with the alternate propeller sizes and pitch, when the engine is run at the one specific rpm?
Thanks,
Deanna