Calculation of the Optimum Pitch Distribution of a Propeller with Sweepback

Author: DeGroff, Harold M.

Year: 1948

Degree: Engineer's thesis

Advisor: Unknown, Unknown

Committee Member: Unknown, Unknown

Option: Aeronautics

DOI: 10.7907/6PJQ-Q596

Abstract

The principal problem dealt with is the derivation of a method for computing the optimum pitch distribution of a lightly loaded, sweptback propeller. The method is based on an extension to the work of Glauert as presented in Volume IV of the Durand series. A complete calculation is carried out for a swept propeller in which the resultant velocities along the blade vary through the transonic regime. The analytical work is simplified by the use of the calculus of variations. A survey of the German literature on this topic is included along with a complete discussion of the aerodynamic parameters to be considered in making of such a design.

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