Tests of Five Metal Model Propellers with Various Pitch Distributions in a Free Wind Stream and in Combination with Model VE-7 Fuselage (1930)
NASA Technical Reports Server (NTRS) · leaf 8
7 TESTS OF FIVE METAL MODEL PROPELLERS with the propeller in operation. The thrust of the propeller was measured as in the free wind stream tests. For determining the propeller characteristics when operating in combi- nation with the model, the propeller was credited with a thrust equal to T— (BI -… … force measured by the thrust balance is T—Ru Figure 5.—Apparatus for velocity survey T being as in previous tests the pull exerted by the propeller and Rl the resistance of the model under the action of wind and slip stream. If to T-Ri is added the resistance of the model in a free wind stream, R0,…
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