3A1-K05 Differential Pressure Measurementon the Wing of an Ornithopter with Figure of Eight Stroke Trajectory(Bio-Mimetics and Bio-Mechatronics)

Abstract

We measured the differential pressures of an ornithopter whose stroke trajectory was a figure of eight. Simultaneously, we visualized the flow around wing surface, and analyzed the differential pressures to connect it. To measure the pressure, we attached a MEMS differential pressure sensor on the wing surface. We designed the ornithopter which could operate a flapping motion and a lead-lag motion at the same time. The ornithopter worked by an electric motor and its flapping frequency was 6-8 Hz. The consequence of this experiment suggests that the peak of the differential pressures and the vortex around wing surface occuur at the same time during the flapping.