• 作者： 朱信；陸鵬?
• 作者服務機構： 國立臺灣大學機械工程學系
• 中文摘要： 本文提供一種計算平面翼或曲面翼與機體之組合在穩態或非穩態性次音速流中所受空氣動力負荷之簡化方法。這種方法 首先將線性化後之邊界?問題轉?成?一個積分方程式，然後再循有限元件法之途徑解之。在此法中，除了將翼面以振動源 沒偶來表示外，特別?調的創新改進之處是一套以流源、流沒和源沒偶分佈，以及翼影像所構成的機體表示法。這種設計 充分利用到飛行體外形以及所受負荷的對稱條件，因此可將計算步驟簡化甚多。本方法可用於計算機翼及機體上的淨負荷分 佈，以及靜態和動態空氣動力係數。文中並以平面翼及捲覆翼和機體的組合來說明其應用情形。計算的結果與實驗數據十分符合。
• 英文摘要： A simplified method for the calculation of airloads on combinations of planar and/or non-planar wings and a slender body in steady or unsteady subsonic flow is presented. In this method, the linearized boundary-value problem is transformed to an integral equation and it is then solved numerically through the finite-element approach. With wings represented by oscillatory doublets, major emphasis of the method is placed on the formulation of an improved body scheme with internal source/sink/doublet distributions and wing image systems. By taking full advantage of symmetric/antisymmetric characteristics of the vehicle configuration and loading conditions, the calculation scheme is significantly simplified. The solution enables the evaluation of net airload distributions on the body and wings; and of static and dynamic aerodynamic coefficients. Application of the method is demonstrated through examples of wing-body combinations with the planar wing and wrap-around wings. Calculated results have been compared with experimental measurements. The agreement is excellent.
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