Pomilio, Ottorino · New York, McGraw-Hill · leaf 90
e efficiency, it is convenient to reduce the widthof the blades to a minimum with respect to the diameter.However, it is not possible to reduce the blade width belowa certain limit, for reasons of construction and resistance of THE PROPELLER 75 the propeller. Practically, it oscillates from 8 to 10… … Fig. G3. All propellers having the same type of profile, are said tobelong to the same family. Numerous laboratory experiments on propellers, byColonel Dorand, have demonstrated that there exist cer-tain well-determined relations between the elements of
Airplanes
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