トンボの飛翔におけるフラッピング運動およびフェザリング運動の影響

抄録

Dragonflies have high flight performance in spite of small size. Therefore, the research of clarifying the flight mechanisms of dragonflies, and then applying it to Micro Air Vehicles (MAVs) is proceeding. Dragonfly's flight mainly consist of a flapping motion and a feathering motion. To control the MAV like dragonflies, clarifying the effect of the flapping motion and the feathering motion on generating aerodynamic force is necessary. In this study, lift and thrust force generated by flapping were measured using flap simulator adjusted the flapping and feathering angle. As a result, lift and thrust force were increased with increase in the flapping angle. Thrust force was particularly increased with increase from 30° to 40° in the flapping angle. When the feathering angle is 45°, downforce was very small, and a lift fluctuation was small. Therefore, the feathering angle of 45° are suitable for the straight flight. When the feathering angle is 60°, momentary lift force was very high. Therefore, the feathering angle of 60° are suitable for a climbing flight such as the take-off. In fact, it was confirmed by the motion analysis that the feathering angle of a dragonfly in the take-off is 60° or more.