Accession Number : ADA191884

Title :   Efficiency Testing of a Helicopter Transmission Planetary Reduction Stage.

Descriptive Note : Technical paper,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION CLEVELAND OH LEWIS RESEARCH CEN TER

Personal Author(s) : Handschuh, Robert F ; Rohn, Douglas A

PDF Url : ADA191884

Report Date : Feb 1988

Pagination or Media Count : 18

Abstract : A parametric study of the efficiency of a 310-kW (420-hp) helicopter transmission planetary test section (four-planets) was performed. The purpose was to determine the planetary contribution to the overall transmission power loss. Test parameters varied were oil flow rate, oil inlet temperature, lubricant type, shaft speed, and applied torque. The measured efficiency over all the test variables ranged from 99.44 to 99.75 percent. These experiment results were compared with other experimental and computational results.

Descriptors :   *HELICOPTERS, *TRANSMISSION GEARS, COMPUTATIONS, EFFICIENCY, FLOW RATE, INLETS, LUBRICANTS, OILS, PARAMETRIC ANALYSIS, POWER, RATES, SHAFTS(MACHINE ELEMENTS), TEMPERATURE, TEST AND EVALUATION, TORQUE, TRANSMISSION LOSS, VARIABLES

Subject Categories : Machinery and Tools
      Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE