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Calculation of the optimum pitch distribution of a propeller with sweepback


DeGroff, Harold M. (1948) Calculation of the optimum pitch distribution of a propeller with sweepback. Engineer's thesis, California Institute of Technology.


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.

Item Type:Thesis (Engineer's thesis)
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Aeronautics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Unknown, Unknown
Thesis Committee:
  • Unknown, Unknown
Defense Date:1 January 1948
Record Number:CaltechETD:etd-12192008-151056
Persistent URL:
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:5081
Deposited By: Imported from ETD-db
Deposited On:15 Jan 2009
Last Modified:26 Dec 2012 03:14

Thesis Files

PDF (Degroff_h_1948.pdf) - Final Version
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