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Abstract:
Advanced-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.
| Limitations: |
 APPROVED FOR PUBLIC RELEASE |
| Description: |
Technical memo. |
| Pages: |
8 |
| Report Date: |
MAY 94 |
| Report Number: |
A391092 |
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Keywords relating to this report:
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