The Direct Measurement of Engine Power on an Airplane in Flight with a Hub Type Dynamometer (1927)
NASA Technical Reports Server (NTRS) · leaf 9
d alcohol was selected as the most suitable working fluid, because it was sufficiently viscous to prevent excessive leakage around the pistons and its viscosity was least influenced by temperatures. A calibration of indicator deflection against measured torque was made with the 2 to 1 mixture of… … O 200 400 600 300 1000 1200 1400 Torque, pounds - feet F;g. 8.—Calibrat ion with 67 per cent glycerin and 33 per cent alcohol. Indicator deflection versus torque FLIGHT TESTS The flight tests were made for the dual purpose of obtaining data for the variation ot torque coefficient of the propeller…
NASA Technical Reports Server (NTRS)
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