| タイトル | Investigation of a free-tip rotor configuration for research on spanwise life distributions and wake velocity surveys of a semi-span wing with a discontinuous twist |
| 本文（外部サイト） | http://hdl.handle.net/2060/19890011592 |
| 著者（英） | Kumagai, Hiroyuki; Fortin, Paul |
| 著者所属（英） | Kansas Univ. Center for Research, Inc. |
| 発行日 | 1989-04-01 |
| 言語 | eng |
| 内容記述 | A wind tunnel test was conducted in the NASA Ames 7 x 10 Foot Wind Tunnel to investigate the lift distribution on a semi-span wing with a discontinuous change in spanwise twist. The semi-span wing had a tip with an adjustable pitch angle independent on the inboard section pitch angle simulating the free-tip rotor blade when its free-tip is at a deflected position. The spanwise lift distribution over the wing and the tip were measured and three component velocity surveys behind the wing were obtained with a three dimensional laser Doppler velocimeter (LV) with the wing at one angle of attack and the tip deflected at different pitch angles. A six component internal strain gage balance was also used to measure total forces and moments on the tip. The three dimensional lift was computed from the two dimensional life distributions obtained from the LV and from the strain gage balance. The results from both experimental methods are shown to be in agreement with predictions made by a steady, three dimensional panel code, VSAERO. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 89N20963
NASA-CR-184948
NAS 1.26:184948 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/142631 |
