In order to determine the efficiency of a propeller as accurately as possible, its revolution speed, thrust and power absorbed must be measured during flight. Unfortunately, these measurements can only be made with very complicated equipment. To surmount this problem the testers contented themselves with approximate results obtainable in two or three hours of flight.
Propeller tests on airplanes
Congres International de la Navigation Aerienne (1st : 1921 : Paris, France)
1922-07-01
Miscellaneous
No indication
English
Ducted propeller for STOL airplanes
Engineering Index Backfile | 1960
|Feature for Distinguishing Propeller-Driven Airplanes from Turbine-Driven Airplanes
Online Contents | 2010
|Propeller-loudness charts for light airplanes
NTRS | 1947
|Propeller-loudness charts for light airplanes
Engineering Index Backfile | 1947
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