| タイトル | Works on theory of flapping wing |
| 本文（外部サイト） | http://hdl.handle.net/2060/19800017776 |
| 著者（英） | Golubev, V. V. |
| 著者所属（英） | NASA Headquarters |
| 発行日 | 1980-06-01 |
| 言語 | eng |
| 内容記述 | It is shown mathematically that taking account of the boundary layer is the only way to develop a theory of flapping wings without violating the basic observations and mathematics of hydromechanics. A theory of thrust generation by flapping wings can be developed if the conventional downstream velocity discontinuity surface is replaced with the observed Karman type vortex streets behind a flapping wing. Experiments show that the direction of such vortices is the reverse of that of conventional Karman streets. The streets form by breakdown of the boundary layer. Detailed analysis of the movements of certain birds and insects during flight 'in place' is fully consistent with this theory of the lift, thrust and drag of flapping wings. Further directions for research into flight with flapping wings are indicated. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 80N26275
NASA-TM-75750 |
| 権利 | No Copyright |
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