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Experimental and analytical evaluation of efficiency of helicopter planetary stage
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Krantz, Timothy L. |
| Copyright Year | 1990 |
| Description | The efficiency of a helicopter transmission planetary stage was studied both experimentally and analytically. Experiments were done by using a back-to-back, test-and-slave arrangement. The experiments were a parametric study of the effects of operating conditions on efficiency. In order to enhance the analysis, a model was developed that calculates the power required for the meshing gears to displace oil trapped between the gear teeth. In general, the analysis predicted higher efficiencies than were measured. The results of this study were compared with those of other studies. |
| File Size | 3132930 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19910003643 |
| Archival Resource Key | ark:/13960/t6b32s236 |
| Language | English |
| Publisher Date | 1990-11-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Power Loss Gears Gear Teeth Oils Helicopters Helicopter Propeller Drive Transmissions Machine Elements System Effectiveness Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
