2) Fractional derivative damping
分数导数型阻尼
3) damping-in-pitch derivative
俯仰阻尼导数
1.
Through the numerical simulation of forced oscillation of liftbody by solving the (N-S) equations, the equilibrium gas effect on damping-in-pitch derivatives is investigated.
通过数值求解N-S方程,模拟升力体外形的强迫振动过程,研究了平衡气体效应对带翼飞行器俯仰阻尼导数的影响。
2.
In this paper, the supersonic damping-in-pitch derivativesof blunt body were calculated with two methods: (1) harmonic perturbationmethod by solving Euler equations; (2) simulant viscous flow field by solving unsteady N-S equations.
分别采用：（1）Euler方程的谐振摄动法；（2）薄层近似的非定常N－S方程模拟有粘扰动流场两种方法计算了钝体外形的高超声速俯仰阻尼导数。
4) damping in roll derivatives
滚转阻尼导数
1.
In this paper, the harmonic oscillating flows were solved by unsteady Navier Stokes equations, and the calculation method of damping in roll derivatives was presented under the Etkin s theory when body oscilated around a fixed axis.
采用非定常 Navier-Stokes方程描述物体简谐振动流场 ,并在 Etkin理论下给出绕定轴转动时滚转阻尼导数的计算公式 ,定常流场的计算采用空间二阶精度的交替方向隐式分解的 NND格式 ,非定常流场的计算采用时、空二阶精度的 Runge-Kutta多步格式 ,采用代数方法生成物体静、动网格。
5) direct damping derivative
直接阻尼导数
1.
To determine direct damping derivatives during aircraft and guided missile design and analysis,a new technique for measuring these derivatives by forced-oscillation method has been established in CG-01 wind-tunnel.
为确定飞机和导弹设计与气动分析时最常用的直接阻尼导数,CG-01风洞试验室建立了强迫振动法测量直接阻尼导数的试验技术。
6) yawing moment due to yawing velocity; yawing moment due to yawing
偏航阻尼导数
补充资料：俯仰
〈书〉①低头和抬头：～之间。②指一举一动：～由人。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条