| タイトル | Ground vortex flow field investigation |
| 本文（外部サイト） | http://hdl.handle.net/2060/19890001481 |
| 著者（英） | Delfrate, John H.; Eshleman, James E.; Kuhn, Richard E. |
| 著者所属（英） | NASA Ames Research Center |
| 発行日 | 1988-02-01 |
| 言語 | eng |
| 内容記述 | Flow field investigations were conducted at the NASA Ames-Dryden Flow Visualization Facility (water tunnel) to investigate the ground effect produced by the impingement of jets from aircraft nozzles on a ground board in a STOL operation. Effects on the overall flow field with both a stationary and a moving ground board were photographed and compared with similar data found in other references. Nozzle jet impingement angles, nozzle and inlet interaction, side-by-side nozzles, nozzles in tandem, and nozzles and inlets mounted on a flat plate model were investigated. Results show that the wall jet that generates the ground effect is unsteady and the boundary between the ground vortex flow field and the free-stream flow is unsteady. Additionally, the forward projection of the ground vortex flow field with a moving ground board is one-third less than that measured over a fixed ground board. Results also showed that inlets did not alter the ground vortex flow field. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 89N10852 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/145012 |
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