An analytical study on rotation timing control of wing flapping in small-insect hover

作者：Yu YL^*; Tong BG; Ma HY

来源：4th International Conference on Fluid Mechanics, 2004-07-20 to 2004-07-30.

• theoretical modeling
• wing flapping
• hovering insect flight
• rotation timing control

A theoretical modeling approach is developed to study flow control mechanisms of wing flapping in insect hover, particularly for small insects, which excite their surrounding flow fields to be highly unsteady and highly viscous. The problem is simplified to a 2-D flat plate which makes translating oscillations at high angle of attack, as well as quick rotations during stroke reversals, in the potential flow with vortex shedding from both the leading and the trailing edges. It is shown that present analytical prediction of the unsteady aerodynamic force in wing flapping may give quantitatively reasonable and qualitatively correct results in comparison with corresponding experimental and CFD data. Specific attention is put on analyzing the effects in timing control of rotation during stroke reversals (i.e. for advanced, symmetrical and delayed rotation modes) and revealing their flow control mechanisms used by insects.

• 出版日期2004
• 单位中国科学院