Efficiency study comparing two helicopter planetary reduction stages | Zendy

Timothy L. Krantz | Zendy; Robert F. Handschuh | Zendy

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Efficiency study comparing two helicopter planetary reduction stages

Author(s) -

Timothy L. Krantz,

Robert F. Handschuh

Publication year - 1990

Publication title -

24th joint propulsion conference

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.1990-2156

Subject(s) - reduction (mathematics) , computer science , environmental science , astrobiology , aerospace engineering , engineering , physics , mathematics , geometry

: A study was conducted to compare the efficiency of two helicopter transmission planetary reduction stages. Experimental measurements and analytical predictions were made. The analytical predicted and experiments verified that one planetary stage was a more efficient design due to the type of planet bearing used in the stage. The effects of torque, speed, lubricant type, and lubricant temperature on planetary efficiency are discussed. Keywords: Gears, Transmission, Efficiency, Power loss.

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