| タイトル | An evaluation of proposed acoustic treatments for the NASA LaRC 4 x 7 meter wind tunnel |
| 本文（外部サイト） | http://hdl.handle.net/2060/19850018008 |
| 著者（英） | Abrahamson, A. L. |
| 著者所属（英） | Comtek Co. |
| 発行日 | 1985-04-01 |
| 言語 | eng |
| 内容記述 | The NASA LaRC 4 x 7 Meter Wind Tunnel is an existing facility specially designed for powered low speed (V/STOL) testing of large scale fixed wing and rotorcraft models. The enhancement of the facility for scale model acoustic testing is examined. The results are critically reviewed and comparisons are drawn with a similar wind tunnel (the DNW Facility in the Netherlands). Discrepancies observed in the comparison stimulated a theoretical investigation using the acoustic finite element ADAM System, of the ways in which noise propagating around the tunnel circuit radiates into the open test section. The reasons for the discrepancies noted above are clarified and assists in the selection of acoustic treatment options for the facility. |
| NASA分類 | ACOUSTICS |
| レポートNO | 85N26319
NAS 1.26:172577
COMTEK-8401
NASA-CR-172577 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/156464 |
