1933-01-01

Airplane Flight Testing for Maximum Speed 330004

THIS paper tells how to obtain and evaluate maximum speed of airplanes in level flight.
Relationship between available thrust horsepower and powers required to overcome both induced and non-induced resistances is given, in order to provide a clearer understanding of the items affecting maximum speed and the various ways of evaluating changes in that speed.
Maintenance of a constant density altitude in combination with a constant engine power or airplane speed is most satisfactory, the authors show.
Charts enabling a pilot to attain these conditions in flight are given, together with a method of manifold-pressure calibration of the engine and the use of such calibration in determining the engine power in flight.

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