stalling flutter是什么意思_stalling flutter中文

stalling flutter中文什么意思

stall: n. 〔美俚〕 1.口实，借口；拖延，搪塞，敷衍；欺骗办 ...
flutter: vi. 1.拍翅振翼；(旗帜)飘扬。 2.颤动，(心)急 ...
stalling: 失速；停止；卡住; 施塔林; 斯托林; 停转; 熄火
flutter: vi. 1.拍翅振翼；(旗帜)飘扬。 2.颤动，(心)急跳，(脉搏)浮动。 3.(心绪)不宁，坐立不安。 4.〔口语〕对人进行测谎。 He fluttered about the room nervously. 他心绪不宁地在房间里徘回。 vt. 1.振(翼)；拍(翅)。 2.扰乱；使不安。 n. 1.振翼；飘扬。 2.不安，焦急，波动。 3.(身体部分的)病态阵跳。 4.〔英俚〕投机，小赌。 5.颤振。 6.图像跳动，脉冲干扰，放音失真。 7.对…进行测谎。 the flutter of wings 翅膀的拍动。 all in a flutter 心慌意乱。 cause [make] a great flutter 轰动一时。 fall into a flutter 心慌意乱。 in a flutter 心里卜卜跳。 put sb. in [into] a flutter ＝ throw sb. into a flutter 使忐忑不安。 n. -er ,-ingly adv.
in a flutter: 心情烦躁

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The characteristic of " lock - in " can be used to explain all kinds of nonlinear phenomenon of the stall flutter
这种频率锁定规律可以清楚地解释失速颤振的各种非线性现象。
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
首先研究了二维翼型的古典颤振(小攻角) 、失速颤振(失速攻角)和动力响应问题(大攻角) ，得到以下结论：在静态失速攻角附近的一定来流速度范围内，分离涡会发生频率锁定现象，分离流的频率与固有频率趋于相同，这时的振动呈现自激振动的特点；远离失速攻角时分离流频率则摆脱固有频率的影响，此时的振动具有强迫振动的特点。

stalling flutter中文什么意思