| タイトル | Scale model acoustic testing of counterrotating fans |
| 著者（英） | Janardan, B. A.; Lee, R.; Ho, P. Y.; Chuang, S. |
| 著者所属（英） | General Electric Co. |
| 発行日 | 1988-01-01 |
| 言語 | eng |
| 内容記述 | The UDF contrarotating propfan has been subjected to scale model wind tunnel testing to ascertain both general performance and acoustic characteristics data bases. Model Propulsion Simulator test rigs able to mount contrarotating fan blades of up to 24.5-inch diameter were used, and one of these was installed in a large anechoic test chamber for acoustic measurement of conditions simulating representative takeoffs, power cutbacks, and landing approaches. Attention is presently given to the data acquisition/reduction systems, the scaling criteria used to obtain engine size acoustic data, and comparisons with demonstrator aircraft in-flight acoustic test results. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 88A37947
AIAA PAPER 88-2057 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/370769 |
|
