Flow Visualization of Aerodynamic Mechanism of Insect Flapping Wings using PIV

• DOI: 10.3154/jvs.30.10
• Publication Date: 2012-04-16T04:38:59Z
• Authors: Hiroto Nagai; Koji Isogai; Tatsumi Fujimoto
• Keywords: Flapping; Stall (fluid mechanics); Aerodynamic force; Lift (data mining); Wing twist

We experimentally investigate unsteady aerodynamic mechanisms of insect flapping wings. Measurements forces and flow visualization around the wing using PIV are conducted with dynamically scaled mechanical models in a water tunnel, which simulates hovering forward flights. clarify effects three aerodynamics on characteristics wing: delayed stall, rotational circulation, wake capture. The contribution stall to total lift accounts for about 90%. feathering rotation during translation contributes an increase power rather than lift. capture is dependent reduced frequency timing rotation. In addition, we interaction between fore- hindwings like dragonfly. phase difference effective tandem