A joint helicopter transmission research program between NASA Lewis Research Center and the U.S. Army Research Lab has existed since 1970. Research goals are to reduce weight and noise while increasing life, reliability, and safety. These research goals are achieved by the NASA/Army Mechanical Systems Technology Branch through both in-house research and cooperative research projects with university and industry partners. Some recent significant technical accomplishments produced by this cooperative research are reviewed. The following research projects are reviewed: oil-off survivability of tapered roller bearings, design and evaluation of high contact ratio gearing, finite element analysis of spiral bevel gears, computer numerical control grinding of spiral bevel gears, gear dynamics code validation, computer program for life and reliability of helicopter transmissions, planetary gear train efficiency study, and the Advanced Rotorcraft Transmission (ART) program.
NASA/Army Rotorcraft Transmission Research, a Review of Recent Significant Accomplishments
1994
16 pages
Report
No indication
English
Aircraft , Tooling, Machinery, & Tools , Tribology , Helicopter propeller drive , Roller bearings , Rotary wing aircraft , Transmissions (Machine elements) , Finite element method , Numerical control , Aircraft reliability , Aircraft safety , Computer programs , Gears , Metal grinding , Noise reduction , Weight reduction
NASA/Army Rotorcraft Transmission Research - A Review of Significant Recent Accomplishments
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