A Bat-Wing Aircraft Using the Smart Joint Mechanism
A bat-like aircraft is proposed, using a smart joint mechanism to actuate the morphing of the wings. The smart joint stays in its deformed shape after cooling, which can be up to 5% of 25 mm length joint. The morphing of the wing shapes of three different bat species is evaluated using a planar lifting line analysis. The morphing improves the lift coefficient over 1000% and the lift to drag ratio over 300% at an angle of attack of 0.6°. The results compare well with what is expected from the type of flight and morphology that has been documented for the bats.
Pietro VINCENZINI and Salvatore GRAZIANI
E. Leylek et al., "A Bat-Wing Aircraft Using the Smart Joint Mechanism", Advances in Science and Technology, Vol. 58, pp. 41-46, 2008