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Propeller Efficiency
Hi All,
I was thinking today about the fluid dynamics surrounding a propeller as it moves in a circular motion. It seems that, no matter what the blade angle, there would be a significant amount of energy lost simply by turning the fluid. IOW, even if there were no drag at any point on the aircraft, only a fraction of the engine power would result in forward movement of the aircraft. The remaining power would be lost in turning fluid in in a vortex in the vicinity of the propeller. Does anyone have any idea of the ratio between thrust power and churn power? TIA, -Le Chaud Lapin- |
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