...Mao Sun; Shi Long Lan SUMMARY Aerodynamic force generation and mechanical power requirements of a dragonfly ( Aeschna juncea ) in hovering flight are studied. The method of numerically solving the Navier–Stokes equations in moving overset grids is used. When the midstroke angles of attack...

... a flight mode qualitatively different from that proposed for lower-speed flight in the hawkmoth and other insects. The mid-downstroke angle of incidence is constant at 30–40 ° across the speed range. The relationship between power requirements and flight speed is explored; above 5 m s −1 , further...