درباره ما
NASA-TM-X-71627
Interim prediction method for low frequency core engine noise
| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T17:25:21Z | |
| date available | 2017-09-04T17:25:21Z | |
| date copyright | 01/01/1974 | |
| date issued | 1974 | |
| identifier other | CHLNGEAAAAAAAAAA.pdf | |
| identifier uri | http://yse.yabesh.ir/std/handle/yse/148479 | |
| description abstract | A literature survey on low-frequency core engine noise is presented. Possible sources of low frequency internally generated noise in core engines are discussed with emphasis on combustion and component scrubbing noise. An interim method is recommended for predicting low frequency core engine noise that is dominant when jet velocities are low. Suggestions are made for future research on low frequency core engine noise that will aid in improving the prediction method and help define possible additional internal noise sources. | |
| language | English | |
| title | NASA-TM-X-71627 | num |
| title | Interim prediction method for low frequency core engine noise | en |
| type | standard | |
| page | 25 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1974 | |
| contenttype | fulltext | |
| subject keywords | ACOUSTICS | |
| subject keywords | CORES | |
| subject keywords | ENGINE NOISE | |
| subject keywords | INLET FLOW | |
| subject keywords | JET AIRCRAFT NOISE | |
| subject keywords | LOW FREQUENCIES | |
| subject keywords | PREDICTION ANALYSIS TECHNIQUES | |
| subject keywords | TURBOFANS |
