airfoil characteristic 中文意思是什麼
airfoil characteristic
解釋
翼型特性- airfoil : 【航空】機翼；翼形，翼剖面。
- characteristic : adj 有特性的；表示…特性的，…特有的。 Japan s characteristic art 日本特有的藝術。n 特性，特徵，性...
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Firstly, the airfoil ' s classic flutter ( at small attack angle ), stall flutter ( near the static stall angle ) and response ( at large attack angle ) are analyzed. it is found from the numerical results that " lock - in " will occur at certain freestream velocity range near the static stall angle, where the frequency of the vortex will be equal to the natural frequency and the flutter has the characteristic of self - induced oscillation. when the attack angle is far from the static stall angle, the vortex will have its own frequency, which differs from the natural frequency, and the flutter has the characteristic of forced oscillation
首先研究了二維翼型的古典顫振（小攻角） 、失速顫振（失速攻角）和動力響應問題（大攻角） ，得到以下結論：在靜態失速攻角附近的一定來流速度范圍內，分離渦會發生頻率鎖定現象，分離流的頻率與固有頻率趨于相同，這時的振動呈現自激振動的特點；遠離失速攻角時分離流頻率則擺脫固有頻率的影響，此時的振動具有強迫振動的特點。 -
In this thesis, a system planning of assembly sequence planning module in virtual assembly system is proposed which is based on analyzing the characteristic of airfoil assembly and assembly design. the core techniques of assembly sequence planning which based on genetic algorithm and fuzzy set theory are investigated in detail. main research work and achievements are as follows : 1
本文在分析飛機機翼裝配特點的基礎上，完成了虛擬裝配系統中裝配順序規劃模塊的設計與實現，並對基於遺傳演算法及模糊集理論的裝配序列規劃技術進行了深入研究，主要研究內容包括： 1
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