flutter vi. 1.拍翅振翼;(旗幟)飄揚。 2.顫動,(心)急跳,(脈搏)浮動。 3.(心緒)不寧,坐立不安。 4.〔口語〕對人進行測謊。 He fluttered about the room nervously. 他心緒不寧地在房間里徘回。 vt. 1.振(翼);拍(翅)。 2.擾亂;使不安。 n. 1.振翼;飄揚。 2.不安,焦急,波動。 3.(身體部分的)病態陣跳。 4.〔英俚〕投機,小賭。 5.顫振。 6.圖像跳動,脈沖干擾,放音失真。 7.對…進行測謊。 the flutter of wings 翅膀的拍動。 all in a flutter 心慌意亂。 cause [make] a great flutter 轟動一時。 fall into a flutter 心慌意亂。 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.
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,特征,性能,特色。 be characteristic of …所獨有的特征,有…的特色。 characteristic of logarithm 對數的首數。 adv. -cally
On comparing flutter characteristics of three supercritical airfoils in transonic flow 超臨界翼型的跨聲速顫振特性研究
The nonlinear panel flutter equations are also solved in time domain . the limit cycle flutter characteristics of nonlinear panel flutter are investigated and the effect of temperature and airflow speed on the nonlinear panel flutter characteristics is studied 通過對非線性壁板顫振方程的時域求解,研究了壁板的極限環顫振特性,得到了溫度、氣流速度等因素對非線性壁板顫振特性的影響規律。
Accurate calculation of aircraft steady and unsteady aerodynamics and flutter characteristics , especially in the transonic speed range is a crucial problem for aircraft designers . it is very important for us to develop an efficient , accurate , robust navier - stokes / euler flow solver that could be used to study transonic steady and unsteady flowfields 飛行器的定常和非定常氣動力的準確數值求解及顫振特性研究,特別是跨音速范圍內的準確數值求解及研究,一直以來都是飛行器設計工作者必須面對的重要研究難題。
At first , the finite element formulation is presented to determine the flutter characteristics of laminated panels at elevated temperature . then both the linear and nonlinear panel flutter characteristics are analyzed . the panel flutter boundaries are finally determined and the effect of temperature , airflow speed , etc , on the panel flutter characteristics is analyzed 為此,本文首先建立了復合材料壁板熱顫振的有限元模型并對受熱壁板的線性和非線性顫振特性進行了研究;最后確定了壁板的顫振邊界,分析了溫度、來流速度等因素對壁板顫振特性的影響規律。