propeller efficiency

[prə′pel·ər i‚fish·ən·sē] (mechanical engineering) The ratio of the thrust horsepower delivered by the propeller to the shaft horsepower as delivered by the engine to the propeller.

propeller efficiency

The ratio of the thrust horsepower to the brake horsepower, or the ratio of the thrust power delivered to the engine to the engine power required to turn the propeller. On an average, 20% of the brake horsepower is lost because of frictional losses; thus the thrust horsepower is generally 80% of the brake horsepower.

单词	propeller efficiency
释义	propeller efficiency propeller efficiency [prə′pel·ər i‚fish·ən·sē] (mechanical engineering) The ratio of the thrust horsepower delivered by the propeller to the shaft horsepower as delivered by the engine to the propeller. propeller efficiency The ratio of the thrust horsepower to the brake horsepower, or the ratio of the thrust power delivered to the engine to the engine power required to turn the propeller. On an average, 20% of the brake horsepower is lost because of frictional losses; thus the thrust horsepower is generally 80% of the brake horsepower.
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