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Study of stator-vane fluctuating pressures in a turbofan engine for static and flight tests
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mueller, A. W. |
| Copyright Year | 1984 |
| Description | As part of a program to study the fan noise generated from turbofan engines, fluctuating surface pressures induced by fan-rotor wakes were measured on core- and bypass-stator outlet guide vanes of a modified JT15D-1 engine. Tests were conducted with the engine operating on an outdoor test stand and in flight. The amplitudes of pressures measured at fan-rotor blade-passage fundamental frequencies were generally higher and appeared less stable for the static tests than for the flight tests. Fluctuating pressures measured at the blade-passage frequency of the high-speed core compressor were interpreted to be acoustic; however, disturbance trace velocities for either the convected rotor wakes or acoustic pressures were difficult to interpret because of the complex environment. |
| File Size | 2343458 |
| Page Count | 57 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840014295 |
| Archival Resource Key | ark:/13960/t18m24x5p |
| Language | English |
| Publisher Date | 1984-04-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Flight Tests Engine Noise Pressure Oscillations Pressure Distribution Rotor Aerodynamics Frequencies Engine Tests Probability Density Functions Spectrum Analysis Wakes Stators Vanes Turbofan Engines 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 |
