Loading...
Please wait, while we are loading the content...
Similar Documents
Seal-rotordynamic-coefficient test results for a model ssme atd-hpftp turbine interstage seal with and without a swirl brake
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Ramsey, Christopher Childs, Dara W. |
| Copyright Year | 1991 |
| Description | The predictions of Scharrer's (1988) theory for rotordynamic coefficients of labyrinth gas seals were compared with measurements for a model SSME Alternate Turbopump Development High Pressure Fuel Turbopump with and without swirl brakes. Using the test apparatus described by Childs et al., tests were conducted with supply pressures up to 18.3 bars and speeds up to 16,000 rpm. Seal back pressure was controlled to provide four pressure ratios at all supply pressures. No measurable differences in leakage was detected for the seal with and without the swirl brakes. Comparisons of the measurement results for the seal without a swirl brake with the Scharrer theory showed that the theory can be used only to provide design guidelines; systematic differences were observed between theory and experiment due to changes in running speed, supply pressure, and pressure ratio. |
| File Size | 578536 |
| Page Count | 12 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920005140 |
| Archival Resource Key | ark:/13960/t04z06g1x |
| Language | English |
| Publisher Date | 1991-10-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Leakage Flow Coefficients Rotor Dynamics Brakes for Arresting Motion Turbine Pumps Reynolds Number Space Shuttle Main Engine Flow Distribution Pressure Distribution Pressure Ratio High Pressure Labyrinth Seals Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
