Planetary Gear Dynamics in Military Helicopters
Abstract
This research is a comprehensive analytical and computational investigation of the dynamic response of planetary gears. In military helicopters, planetary gears are typically the last stage gear reduction whose output drives the main rotor. Their dynamics dominate the cabin noise. Furthermore, the frequency of the noise is in the range most audible by humans. With deeper understanding of planetary gear dynamics, the goals are to reduce the noise, vibration, and weight of helicopter planetary gears while simultaneously increasing their reliability. This project will also develop lumped-parameter and finite element analysis tools for planetary gears. These tools are notably lacking despite the importance of planetary gears in helicopters, cars, heavy machinery, marine vehicle and other applications. Planetary gears have received little prior research attention as most gear dynamics studies address the simpler case of a single pair of meshing gears. Thus, the potential for scientific advancement and near-term practical application of the results is excellent. The unique computational tool available for this effort makes the objectives particularly achievable.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 10, 2000
- Accession Number
- ADA378777
Entities
People
- Robert G. Parker
Organizations
- Ohio State University