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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REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS . SET-UP OF APPARATUS AND METHOD OF TESTS The apparatus for the free wind stream tests is shown in Figure 3. The model propellers are mounted on the shaft of a cradle type dynamometer placed at the axis of the wind tunnel. … vations for thrust, torque, angular velocity and Figure 3—Arrangement of apparatus for free stream tests wind velocity. 3. Increase thrust in suitable increments to give well distributed spots on graphs by in- creasing angular velocity and make similar observations. This process is continued (with…
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