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Overall Propulsive Efficiency of Turboprop

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Albertiumoxide

Albertiumoxide

New Member
Joined
Sep 2, 2019
Messages
1
Does anyone know why does the turbopropeller engine reach the same overall propulsive efficiency at a higher mach number than the supercharged piston-propeller engine?

The attached picture is a graph that indicates this trend, it was found in "The Design Of The Aeroplane" by Darrol Stinton.

Many thanks
AlbertPropulsive Efficiency.jpg
 
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