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Forward velocity effects on jet noise with dominant internal noise source
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Goodykoontz, J. H. Vonglahn, U. H. |
| Copyright Year | 1973 |
| Description | Acoustic data, with and without forward velocity, were obtained with a circular nozzle using a quiet flow system and one dominated by a low frequency internal noise source (analogous to combustion noise). Forward velocity effects were obtained by installing the test nozzle in a free jet. Farfield noise data were obtained at jet pressure ratios from 1.3 to 1.7 and forward velocities up to 260 ft/sec. With a quiet flow system, jet noise is reduced by forward velocity. With a dominant low frequency core noise source, the portion of the noise spectra dominated by this source was not appreciably affected by forward velocity. |
| File Size | 1292365 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19730024235 |
| Archival Resource Key | ark:/13960/t0rr6mg63 |
| Language | English |
| Publisher Date | 1973-01-01 |
| Access Restriction | Open |
| Subject Keyword | Aircraft Free Jets Acoustic Measurement Jet Aircraft Noise Noise Reduction Combustion Chambers Sound Pressure Convergent Nozzles Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
