Aerodynamic Model for Tandem Flapping Wings

作者：Faisal A H M^*; Filippone A

来源：AIAA Journal, 2016, 54(12): 3849-3858.

DOI：10.2514/1.J055178

An aerodynamic model for tandem flapping wings is proposed. The model attempts to represent insects such as the dragonfly. Two advances are presented: the aerodynamic model with tandem wings flapping simultaneously, and the wing-stroke optimization. The aerodynamic model accounts for the inflow effects of the front wing (forewing) on the rear wing (hind wing). The stroke is optimized at two flight conditions (acceleration and level flight) by using a heuristic optimization procedure (particle swarming). The vector of the design variables consists of 28 independent parameters (14 per wing), each with a constrained range derived from the maximum available power, the flight muscle ratio, and kinematics of real insects. The cost function is the propulsive efficiency coupled with constraints for flight stability. Prediction of the level flight efficiency is in agreement with the flight muscle efficiency. The maximum acceleration is found to be dependent on the size of the flight muscle. Finally, a study of the wing shape is presented for both level and accelerating flight conditions.

• 出版日期2016-12