| タイトル | Vortex systems on slender rotating bodies and their effect on the aerodynamic coefficients |
| 本文（外部サイト） | http://hdl.handle.net/2060/19870004848 |
| 著者（英） | Fiechter, M. |
| 著者所属（英） | NASA |
| 発行日 | 1986-12-01 |
| 言語 | eng |
| 内容記述 | The turbulent flow of rotational bodies up to a length of 20 diameters with various head shapes and cylindrical tails was examined in the subsonic wind tunnel with the Mach number of M = 0.1. At angles of incidence lower than 30 degrees, a pair of symmetrical eddies rests stationary from head to tail on the trailing side, very close to the body. At angles between 30 and 60 degrees, the stationary eddies are asymmetrically pushed off. Between 60 and 90 degrees, the eddies detach themselves in an instationary manner. This includes, for example, the turbulent flow at the start-up of flying bodies in the presence of lateral winds. The results of measurments obtained by Mello at M = 2, an impulse method, and the cross flow theory according to Allen are used for comparison. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 87N14281
NASA-TM-88490
NAS 1.15:88490
ISL-10/66 |
| 権利 | No Copyright |
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