Improvements in Spiral-Bevel Gears to Reduce Noise and Increase StrengthAdvanced-design spiral-bevel gears were tested in an OH-58D helicopter transmission using the NASA 500 hp Helicopter Transmission Test Stand. Four different gear designs were tested. The four designs tested were the current design of the OH-58D transmission, a higher-strength design the same as the current but with an increased fillet radius to reduce gear tooth bending stress, and two versions of a lower-noise design the same as the high-strength but with modified tooth geometry to reduce transmission error and noise. Noise, vibration, and tooth strain tests were performed and significant gear stress and noise reductions were achieved.
Document ID
19940029103
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lewicki, David G. (NASA Lewis Research Center Cleveland, OH, United States)
Handschuh, Robert F. (NASA Lewis Research Center Cleveland, OH, United States)
Henry, Zachary S. (NASA Lewis Research Center Cleveland, OH, United States)
Litvin, Faydor L. (NASA Lewis Research Center Cleveland, OH, United States)