Abstract
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 (fore-wing) on the rear wing (hind-wing).
The stroke is optimized at two right conditions (acceleration and level right) 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 right muscle ratio and kinematics of real insects. The cost function is the propulsive efficiency coupled with constraints for right stability. Prediction of the level right
efficiency is in agreement with the right muscle efficiency. The maximum acceleration is found to be dependent on the size of the right muscle. Finally, a study of the wing shape is presented for both level and accelerating right conditions.
The stroke is optimized at two right conditions (acceleration and level right) 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 right muscle ratio and kinematics of real insects. The cost function is the propulsive efficiency coupled with constraints for right stability. Prediction of the level right
efficiency is in agreement with the right muscle efficiency. The maximum acceleration is found to be dependent on the size of the right muscle. Finally, a study of the wing shape is presented for both level and accelerating right conditions.
| Original language | English |
|---|---|
| Journal | AIAA Journal |
| Early online date | 18 Jul 2016 |
| DOIs | |
| Publication status | Published - Dec 2016 |
