| タイトル | Interim prediction method for fan and compressor source noise |
| 本文（外部サイト） | http://hdl.handle.net/2060/19750017876 |
| 著者（英） | Heidmann, M. F. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1975-06-01 |
| 言語 | eng |
| 内容記述 | A method is presented for interim use in assessing the noise generated by fans and compressors in turbojet and turbofan engines. One-third octave band sound pressure levels consisting of broadband, discrete tone, and combination-tone noise components are predicted. Spectral distributions and directivity variations are specified. The method is based on that developed by other investigators with modifications derived from an analysis of full-scale, single-stage fan data. Comparisons of predicted and measured noise performance are presented, and requirements for improving the method are discussed. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 75N25948
NASA-TM-X-71763
E-8398 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/189641 |
