The large active wing deformation is a significant way to generate highaerodynamic forces required in bat flapping flight. Besides the twisting, theelementary morphing models of a bat wing are proposed, such as wing-bending inthe spanwise direction, wing-cambering in the chordwise direction, and wingarea-changing. A plate of aspect ratio 3 is used to model a bat wing and athree dimensional unsteady panel method is applied to predict the aerodynamicforces. It is found that the cambering model has a great positive influence onthe lift, followed by area-changing model and then the bending model. Thefurther study indicates that the vortex control is a main mechanism to producehigh aerodynamic forces, and the mechanisms for the aerodynamic forceenhancement are the asymmetry of the cambered wing and the amplifier effects ofwing area-changing and wing bending. The lift and thrust are mainly generatedduring the downstroke and almost negligible forces during the upstroke by theintegrated morphing model-wing.
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