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Foil face seal testing
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Munson, John |
| Copyright Year | 2009 |
| Description | In the seal literature you can find many attempts by various researchers to adapt film riding seals to the gas turbine engine. None have been successful, potential distortion of the sealing faces is the primary reason. There is a film riding device that does accommodate distortion and is in service in aircraft applications, namely the foil bearing. More specifically a foil thrust bearing. These are not intended to be seals, and they do not accommodate large axial movement between shaft & static structure. By combining the 2 a unique type of face seal has been created. It functions like a normal face seal. The foil thrust bearing replaces the normal primary sealing surface. The compliance of the foil bearing allows the foils to track distortion of the mating seal ring. The foil seal has several perceived advantages over existing hydrodynamic designs, enumerated in the chart. Materials and design methodology needed for this application already exist. Also the load capacity requirements for the foil bearing are low since it only needs to support itself and overcome friction forces at the antirotation keys. |
| File Size | 2967230 |
| Page Count | 7 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20090041730 |
| Archival Resource Key | ark:/13960/t6p03564g |
| Language | English |
| Publisher Date | 2009-11-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Services Seals Stoppers Friction Thrust Bearings Gas Turbine Engines Distortion Charts Sealing Foil Bearings Shafts Machine Elements Loads Forces Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
