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Performance deterioration due to acceptance testing and flight loads; jt90 jet engine diagnostic program
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Olsson, W. J. |
| Copyright Year | 1982 |
| Description | The results of a flight loads test of the JT9D-7 engine are presented. The goals of this test program were to: measure aerodynamic and inertia loads on the engine during flight, explore the effects of airplane gross weight and typical maneuvers on these flight loads, simultaneously measure the changes in engine running clearances and performance resulting from the maneuvers, make refinements of engine performance deterioration prediction models based on analytical results of the tests, and make recommendations to improve propulsion system performance retention. The test program included a typical production airplane acceptance test plus additional flights and maneuvers to encompass the range of flight loads in revenue service. The test results indicated that aerodynamic loads, primarily at take-off, were the major cause of rub-indicated that aerodynamic loads, primarily at take-off, were the major cause of rub-induced deterioration in the cold sectin of the engine. Differential thermal expansion between rotating and static parts plus aerodynamic loads combined to cause blade-to-seal rubs in the turbine. |
| File Size | 17418642 |
| Page Count | 174 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820019433 |
| Archival Resource Key | ark:/13960/t1bk66f4j |
| Language | English |
| Publisher Date | 1982-01-22 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Propulsion And Power Performance Tests Fuel Consumption Clearances Nacelles Aircraft Engines Engine Tests Engine Parts High Pressure Structural Weight Deterioration Low Pressure Aircraft Maneuvers Turbofan Engines Turbines Aerodynamic Loads 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 |
