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Life and reliability models for helicopter transmissions
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Knorr, R. J. Coy, J. J. Savage, M. |
| Copyright Year | 1982 |
| Description | Computer models of life and reliability are presented for planetary gear trains with a fixed ring gear, input applied to the sun gear, and output taken from the planet arm. For this transmission the input and output shafts are co-axial and the input and output torques are assumed to be coaxial with these shafts. Thrust and side loading are neglected. The reliability model is based on the Weibull distributions of the individual reliabilities of the in transmission components. The system model is also a Weibull distribution. The load versus life model for the system is a power relationship as the models for the individual components. The load-life exponent and basic dynamic capacity are developed as functions of the components capacities. The models are used to compare three and four planet, 150 kW (200 hp), 5:1 reduction transmissions with 1500 rpm input speed to illustrate their use. |
| File Size | 620679 |
| Page Count | 13 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19830002155 |
| Archival Resource Key | ark:/13960/t4bp4wx65 |
| Language | English |
| Publisher Date | 1982-01-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Component Reliability Stress Analysis Gears Helicopters Wear Life Durability Performance Prediction Reliability Analysis Mathematical Models Computer Aided Design Transmissions Machine Elements Weibull Density Functions Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
