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An analytical method to predict efficiency of aircraft gearboxes (1984)

Anderson, N. E. ; Black, J. D. ; Loewenthal, S. H.

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Publication Date: 2019-06-28

Description: A spur gear efficiency prediction method previously developed by the authors was extended to include power loss of planetary gearsets. A friction coefficient model was developed for MIL-L-7808 oil based on disc machine data. This combined with the recent capability of predicting losses in spur gears of nonstandard proportions allows the calculation of power loss for complete aircraft gearboxes that utilize spur gears. The method was applied to the T56/501 turboprop gearbox and compared with measured test data. Bearing losses were calculated with large scale computer programs. Breakdowns of the gearbox losses point out areas for possible improvement.

Keywords: AIRCRAFT PROPULSION AND POWER

Type: AIAA PAPER 84-1500

Format: text

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