Tests of Five Metal Model Propellers with Various Pitch Distributions in a Free Wind Stream and in Combination with Model VE-7 Fuselage (1930)
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L ADVISORY COMMITTEE FOR AERONAUTICS PROGRAM OF TESTS The program for tests was as follows: 1. Tests in an unobstructed wind stream. (a) Tests of propeller A with blades set at the designed angles. Reduction of observed data to the usual coefficients n _ Power p _ Thrust and 77 = efficiency, and… … (6) Preliminary tests of propellers B, C, D, and E at various blade settings and at values of V/nD in the neighborhood of that for maximum efficiency, to determine the setting giving maxi- mum efficiency for the same value of the speed-power coefficient *\Pn2 as that determined for propeller A at…
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