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动导数
[数][力] dynamic derivative
- 第二，采用动导数仿真方法，获得模型绕体轴的滚转阻尼导数；
Second, the dynamic derivate simulating method is adopt to obtain the roll damping derivative of the model rolled around the body coordinate axes; - 缆绳采用有限差分法，球体采用经典的六自由度方程，其中气动力导数以静导数、动导数和附加质量表示。
The tether was modeled using finite difference approximation. The balloon was modeled using rigid-body dynamic model including the static derivative, dynamic derivative and added mass. - 采用自由振荡法数值模拟了平头、钝头外形的超声速俯仰振荡时间历程，并应用奇异分解线性最小二乘法辨识稳定性导数，得到动导数随马赫数和攻角非线性变化的规律。
The dynamic derivatives conception is used as the index for the vehicle stability, but it is looked as the function of angle of attack and Mach number to induced nonlinear characteristics.
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