127 STATIC THKTJST OF AIRPLANE PROPELLERS blade angle at the 42-inch radius to obtain the blade 3 angle at the 0.75 B. In design studies it is more convenient to work with … Propeller diameter, feet Fioube 4.—Correction for obtaining blade frigv at 0.76 radios from blade setting at 42" station. Positive (+) values of A 6 to be added to setting at 42" station, negative (—} values to be subtracted to get blade angle at 0.7S radius. Example: For 10 ft. dla. Prop. AB-—JB°.…
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