機翼釋放飛彈流場參數探討

Parametric Investigation of a Missile Released from a Wing

劉邦毅(Bang-Yi Liu)

指導教授 ： 楊世英

國立虎尾科技大學/工程學院/飛機工程系航空與電子科技碩士班/碩士(2017年)

摘要

摘要
在飛機與彈體進行分離時，將彈體順利地擊中目標物雖然重要，但如果所釋放之彈體撞擊到母體本身而導致損壞這並不是我們想要看到的，所以能將彈體順利分離也是值得關注的一環，因此本文使用商用軟體ESI CFD FASTRAN 研究超音速流通過機翼釋放飛彈之參數效應，在卡式座標下求解三維非穩態Euler方程式，採用多區塊Chimera網格系統，不同區塊網格系統重疊部分相互自動傳遞資訊，為驗證本文計算的正確性，單顆彈體重心瞬間軌跡與翻滾、俯仰、偏航角度、瞬間速度、角速度計算結果與實驗值比較後，趨勢分佈非常接近，進而改變三彈體分別以不同時間釋放並探討推進力量倍增、攻角變化以及馬赫數的變化之機翼釋放飛彈流場非穩態物理現象。

關鍵字

飛彈 ； 分離參數效應

並列摘要

Abstract
As for the release of store from the aircraft, it is important that the target is hit and destroyed by the stores. However, it will not be allowed and expected if the mother aircraft is hit and damaged by the store it releases. Consequently, smooth separation of store and aircraft is also concerned. In this article, the commercial software ESI CFD FASTRAN is applied to study the parametric effects of supersonic flows around a missile released from a wing. The three-dimensional, unsteady Euler is solved in the Cartesian coordinate. The Chimera multi-block grid system is utilized, and grid communication among multiple blocks is automatically implemented. To evaluate the accuracy of the present calculation, the calculated one-store instantaneous trajectory of center of gravity of store, angles of roll, pitch and yaw, velocity and angular rate are compared with those of experimental data. The satisfactory agreement is achieved. Then, three stores released at different time is proceeded. As far as the missile is concerned, three parameters are carried out to investigate the parametric effects of a separated missile. The first is to increase the thrust of the missile, the second is to vary the angle of attack while the last is to change the Mach number.

並列關鍵字

Missile ； separation ； parametric effects

參考文獻

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