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Development of self-acting seals for helicopter engines
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lynwander, P. |
| Copyright Year | 1974 |
| Description | An experimental evaluation of a NASA-designed self-acting face seal for use in advanced gas turbine main shaft positions was conducted. The seal incorporated Rayleigh step pads (self-acting geometry) for lift augmentation. Satisfactory performance of the gas film seal was demonstrated in a 500-hour endurance test at speeds to 183 m/s (600 ft/sec, 54,000 rpm) and air pressure differential of 137 newtons per square centimeter (198.7 psi). Carbon wear was minor. Tests were also conducted with seal seat runout greater than that expected in engine operation and in a severe sand and dust environment. Seal operation was satisfactory in both these detrimental modes of operation. |
| File Size | 6021833 |
| Page Count | 76 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19750011171 |
| Archival Resource Key | ark:/13960/t2b901q49 |
| Language | English |
| Publisher Date | 1974-10-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Equipment Specifications Performance Tests Materials Tests Gas Turbine Engines Packings Seals Helicopter Engines Product Development 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 |
