stall angle of attack 中文意思是什麼

stall angle of attack 解釋
失速迎角
  • stall : n 1 畜舍的一個隔欄；馬房，牛棚。2 （房舍內的）分隔小間；〈美國〉汽車間。3 售貨攤；棚店；售品陳列...
  • angle : n 【英史】盎格魯人〈cf Angles〉。n 1 角，隅，角落；棱，嬗角。2 【數學】角，角位，角的度數。3 【機...
  • of : OF ＝Old French 古法語。
  • attack : vt 1 攻擊 （opp defend）。2 非難，抨擊。3 著手，動手，投入。4 （疾病）侵襲。5 【化學】腐蝕。n 1 ...
  1. 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。
  2. Some important conclusions, such as movement of some work conditions under the circumstances of cut - in wind speed 、 rated wind speed and extreme wind speed. verify the stall phenomenon that the blade produces when being too big because of angle of attack, are verified

    驗證風力發電機在切入風速、額定風速和極限風速工況下的運行情況，驗證了葉片由於攻角過大時產生的失速現象等。
  3. According to self - study ability of neural network, this paper designed a fuzzy neural network controller to apply in one of the post - stall maneuvers milestone70 degree angle of attack trimmed flight through train the fuzzy logic rules and membership functions of the traditional fuzzy logic controller, then we got satisfied results

    利用神經網路具有自學習能力的優勢，採用反向傳播學習演算法，通過對傳統模糊邏輯控制器中的模糊邏輯控制規則和隸屬函數有關參數進行訓練學習，設計了模糊神經網路控制器，應用於飛機的過失速機動「里程碑」之一? ? 70迎角定常飛行模擬計算，獲得了令人滿意的結果。
  4. The mechanism of two possible ways of thrust vectoring control : force and moment control are analyzed. the effects of thrust vectoring on aircraft supersonic performance, take - off and landing performance, low speed and high angle of attack performance are studied. the air combat effectiveness of thrust vectoring control and post - stall maneuvers are also analyzed

    5 、分析了推力矢量的兩種應用方式：力控制和力矩控制的機理，研究了推力矢量對飛機超音速性能、起降性能、低速大迎角性能的影響，討論了推力矢量與過失速機動對空戰效能的影響。
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