A RETRACTABLE PROPELLER FOR SELF-LAUNCHING SAILPLANES

Authors

  • D. Marsden
  • V. Sharma

Keywords:

Aerodynamics, Structures, Design

Abstract

A new design for a completely retractable propulsion system for high performance powered sailplanes is presented. Advantages of this design are: a fixed motor with the propeller only being extended, a two to one reduction in speed to allow the use of a large diameter efficient propeller, and a clutch arrangenent so the motor can be started before the propeller is extended. Wind tunnel tests show that the propeller does indeed produce enough thrust for good climb performance even with the relatively low (23 horsepower) output of a small two stroke engine.

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Issue

Vol. 4 No. 2 (1976)

Section

Articles

License

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