根据气动力系数的脉动量急剧上升的起始点确定抖振起始边界。
The buffet onset boundary is defined as the begin point of increased suddenly fluctuating value of aerodynamic coefficients.
论文主要研究从弹丸自由飞行数据中如何准确地拟合空气动力系数。
This paper mainly studies how to accurately fit the air dynamics parameter by the ballistic data of projectiles' free flight.
不论刚体气动力为线性还是非线性，气动力系数随动压变化的趋势均呈线性。
The aerodynamic coefficient varies with dynamic pressures always linearly, no matter what a rigid aerodynamic force may be linear or non-linear.
给出了在锁定状态下不同振动条件时气动力系数变化的计算结果及其机理分析。
Computation of changes of aerodynamic force coefficients and its mechanism analysis under different oscillating conditions in lock-in status are given.
计算结果表明：气动力系数及分离泡呈规则的周期性变化，证明方法是成功的、可行的。
The results show that the force coefficients and separation bubble are periodic, which indicates the method is correct and feasible.
试验得到了具有典型倾角的拉索在不同风向角下，拉索模型上的平均风压和脉动风压系数，以及气动力系数。
Mean and fluctuating pressures and aerodynamic force coefficients on the cable model and the artificial rivulet are obtained under the conditions of typical cable inclined angles and wind angles.
建立了再入机动弹道数学模型，给出了气动力系数为速度、迎角、高度的函数拟合式，进行了最佳再入机动弹道设计和仿真计算。
The mathematical model of reentry maneuvering trajectory is established. The fitting expression of aerodynamic coefficient function on velocity, attack of Angle and altitude is presented.
在进行亚音速气动分析时，应用线化速度势理论计算运载器的气动力系数，而后进行回归分析，得到运载器亚音速飞行时的气动特性模型。
For subsonic aerodynamic analysis, Linearized Velocity Potential Theory is used to evaluate the aerodynamic coefficient, and we can get subsonic aerodynamic model of vehicle by Regression analysis.
对新款车的前后区域均进行了空气动力学微调，这样做旨在确保最大限度地平衡前后轴的升力系数。
The aerodynamic fine tuning in the front and rear areas is designed to guarantee an optimum balance in the lift coefficients at the front and rear axles.
试验数据分析结果表明，不同客车前部造型对气动力影响非常显著，如通过改善造型可使空气阻力系数由0.7509降为0.5759。
The analysis of aerodynamic force data shows that differ front shape is very important to aerodynamic force. For example, coach model air drag coefficient can be lowed to 0.5759 from 0.7509.
试验数据分析结果表明，不同客车前部造型对气动力影响非常显著，如通过改善造型可使空气阻力系数由0.7509降为0.5759。
The analysis of aerodynamic force data shows that differ front shape is very important to aerodynamic force. For example, coach model air drag coefficient can be lowed to 0.5759 from 0.7509.
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