Affiliation:
1. Transmission Research Inc., Cleveland, Ohio
Abstract
A simple split-torque gear train is used as the main rotor transmission of a single-engine helicopter. Overall speed reduction ratio achieved is 103:1 between the engine at a nominal 36 000 rev/min and the main rotor at 350 rev/min. This ratio is generated from three stages of fixed-axis gear trains containing only eight gears. Alternative configurations are outlined and discussed. Comparison with a current production design shows the split torque arrangement offers reductions in weight, height, and drive train losses. A low total of gears and bearings offers the potential for improved reliability.
Cited by
4 articles.
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1. Vibration Analysis of Split-Torque Transmission System with Tooth Crack Fault;2023 Global Reliability and Prognostics and Health Management Conference (PHM-Hangzhou);2023-10-12
2. Development of Helicopter Power Transmission System Technology;Applied Mechanics and Materials;2011-08
3. Split Torque Helicopter Transmissions with Widely Separated Engines;Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering;1989-01
4. Design Study of a 375 kW Helicopter Transmission with Split-Torque Epicyclic and Bevel Drive Stages;Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science;1983-10