人類已藉由各式各樣的飛行載具來飛行約一世紀，雖然人類的飛行靈感取源於鳥類的飛行，但我們卻不是非常明瞭其飛行原理。 本文藉由對四連桿機構的概念，設計完整的拍翅機構來模擬小鳥的動作，並可以控制向上及向下拍動的角度。在實驗當中主要是進行空氣動力特性的探討（升力、推力等），瞭解其與風速、頻率以及攻角之間的關連，並藉此探討與一般固定翼飛機有何不同之處。如此一來，將有利後續研究者對這方面的研究有初步的認知並加以改進，日後將拍翅翼廣泛運用於生活的各方面上。

　　Human beings flying with the help of aircraft of various kinds have been able to fly for about one century. Although the flapping wings of animals served as an inspiration to pioneers of human flight, we don’t really understand how they work. In this thesis, we employ the concept of four- bar linkage to design a flapping mechanism which simulates the flapping motion of a bird. The upstroke angle and downward angle can be varied in the design. This experiment focuses on aerodynamic characters including the lift and thrust. The effects of frequency, wind velocity and angle of attack on the left and thrust were investigated. This research provides some preliminary understanding to the flapping wing, which could give some information for the following research.

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