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High temperature evaluation of an active clearance control system concept
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Oswald, Jay J. Steinetz, Bruce M. Taylor, Shawn C. |
| Copyright Year | 2006 |
| Description | A mechanically actuated blade tip clearance control concept was evaluated in a nonrotating test rig to quantify secondary seal leakage at elevated temperatures. These tests were conducted to further investigate the feasibility of actively controlling the clearance between the rotor blade tips and the surrounding shroud seal in the high pressure turbine (HPT) section of a turbine engine. The test environment simulates the state of the back side of the HPT shroud seal with pressure differentials as high as 120 psig and temperatures up to 1000 F. As expected, static secondary seal leakage decreased with increasing temperature. At 1000 F, the test rig's calculated effective clearance (at 120 psig test pressure) was 0.0003 in., well within the industry specified effective clearance goal. |
| File Size | 1419755 |
| Page Count | 21 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20060056456 |
| Archival Resource Key | ark:/13960/t7tn26741 |
| Language | English |
| Publisher Date | 2006-11-01 |
| Access Restriction | Open |
| Subject Keyword | Mechanical Engineering Leakage Blade Tips Seals Stoppers Simulation Control Systems Design Shrouds High Temperature Turbine Engines High Pressure 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 |
