A procedure is developed for deriving the level flight drag and propulsive efficiency of propeller-driven aircraft. This is a method in which the overall drag of the aircraft is expressed in terms of the measured increment of power required to overcome a corresponding known increment of drag. The aircraft is flown in unaccelerated, straight and level flight, and thus includes the effects of the propeller drag and slipstream. Propeller efficiency and airplane drag are computed on the basis of data obtained during flight test and do not rely on the analytical calculations of inadequate theory. (Author)
Flight Test Evaluation of a Method to Determine the Level Flight Performance Propeller-Driven Aircraft
1976
58 pages
Report
No indication
English
SAE Technical Papers | 1977
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