| タイトル | The structure of trailing vortices generated by model rotor blades |
| 本文（外部サイト） | http://hdl.handle.net/2060/19820002139 |
| 著者（英） | Tung, C.; Pucci, S. L.; Caradonna, F. X.; Morse, H. A. |
| 著者所属（英） | NASA Ames Research Center|Army Aviation Research and Development Command |
| 発行日 | 1981-08-01 |
| 言語 | eng |
| 内容記述 | Hot-wire anemometry to analyze the structure and geometry of rotary wing trailing vortices is studied. Tests cover a range of aspect ratios and blade twist. For all configurations, measured vortex strength correlates well with maximum blade-bound circulation. Measurements of wake geometry are in agreement with classical data for high-aspect ratios. The detailed vortex structure is similar to that found for fixed wings and consists of four well defined regions--a viscous core, a turbulent mixing region, a merging region, and an inviscid outer region. A single set of empirical formulas for the entire set of test data is described. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 82N10012
NASA-TM-81316
USAAVRADCOM-TR-81-A-25
A-8683 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/167835 |
