| タイトル | CFD prediction of the near-field sonic boom environment for two low boom HSCT configurations |
| 著者（英） | Siclari, M. J.; Darden, C. M. |
| 著者所属（英） | NASA Langley Research Center; Grumman Aerospace Corp. |
| 発行日 | 1991-06-01 |
| 言語 | eng |
| 内容記述 | Current efforts to reduce the sonic boom of a future High Speed Civil Transport (HSCT) by careful shaping have led to the need for more accurate predictions of the near-field flow conditions of the configuration. A fully three-dimensional Euler finite volume code is used to predict sonic boom pressure signatures for two low boom concepts - one designed to cruise at Mach 2 and the other at Mach 3. Calculations were carried out using a grid topology that has been modified to reduce the inaccuracies caused by grid spreading often suffered with CFD methods when calculations several body lengths downstream become necessary. Comparisons of CFD results and experimental wind tunnel signatures are shown. Ground signatures are predicted by extrapolating the pressures predicted by the Euler code with an extrapolation method based on the Whitham theory. |
| NASA分類 | ACOUSTICS |
| レポートNO | 91A43560
AIAA PAPER 91-1631 |
| 権利 | Copyright |
