forces acting on airfoils in motion relative to the air (or other gaseous fluids)

the validity of n-s equations, the distribution of flow parameters and aerodynamic force and the relation between axial force and separation distance have been analyzed.

分析了流场参数分布、气动力分布特性及轴向力随分离距离变化情况。

the three-component of aerodynamic force of a 1∶60 scale sectional model was tested for the 75 test cases including bridge deck without vehicles, bridge deck with vehicles and construction stage.

进行了1∶60缩尺模型试验，开展了桥面无车状态、桥面有车状态和施工状态下的75个试验工况节段模型测力试验研究，并利用获得的三分力系数进行了全桥静风响应分析。

the aerodynamic force that is applied in a downwards direction as a car travels forwards. this is harnessed to improve a car「s traction and its handling through corners.

当车向前行驶时，空气动力由此产生向下的力。这会有助于改进车辆的牵引力，以及在过弯中的操控性。

as more and more van body trucks are used in modern highway transportation, researches on reducing aerodynamic force and saving energy become more important.

厢式货车在公路运输中发挥着越来越大的作用 ，研究厢式货车的减阻节能问题具有重要的意义。

dummy aim calculation is needed in the close-loop guidance based on the requiring velocity, which only can be acquired by linearization the earth oblateness and reentry aerodynamic force influence.

基于需要速度的闭路制导要进行虚拟目标计算，在修正地球扁率和再人段空气动力的影响时通常只能采用线性化等简化手段，随着导弹技术的发展，由此而带来的方法误差所占比例必将增大。

the method is capable of computing the varying aerodynamic force or velocity field in time domain over wings with arbitrary motion.

但在实际问题中，常需要了解亚音速机翼作完全非定常运动时气动力的变化规律，目前能作这种计算的方法还不多。

the generalized aerodynamic force required in analysis is calculated by using horse shoe vortex— vibrational pressure doublet grid method, based on theory of subsonic unsteady lifting plane.

在颤振特性分析中所需要的广义气动力是根据亚音速非定常升力面理论，采用马蹄涡—振蕩压力偶极子格网法计算的。

numerical results of aerodynamic force coefficients of a flow about a fixed cylinder are firstly obtained.

首先给出固定圆柱绕流气动力系数的数值模拟结果；

aerodynamic force and moment coefficients are given as functions of angle of attack, mach number and control surface deflections.

气动力和力矩系数是迎角、马赫数及控制舵面偏角的函数；

the invention relates to an aerodynamic force pipeline transport system which is a novel pipeline transport system.

气动力管道运输系统，一种新型管道运输系统。

considering the evident geometrical nonlinearity of cable-dome and the supposition that aerodynamic force is constant, a new method is put forward to calculate the critical wind velocity.

针对索穹顶结构强几何非线性的特点和弛振分析气动力準定常的基本假设，提出了用迭代思想求解结构驰振临界风速的方法；

research results of the re-entry body in rolling resonance and small asymmetrical aerodynamic force as well as existential problems are emphatically described. it indicates that to determine rand…

文中着重叙述了再入体滚转共振和小不对称气动力问题的研究结果和存在问题。

though asymmetry stator mistuned may result in bigger amplitude aerodynamic force with the same frequency as rotational speed, it could reduce effectively the aerodynamic force of blade as a whole.

不对称叶栅非谐设计虽然会引起与转速同频的较大幅值激振力成分，但从整体考虑可有效降低叶片振动应力。

on military aircraft, hydraulic pressures of actuators caused by hinge torque vary with aerodynamic force on control surface due to different flight states.

飞机在不同的飞行阶段和飞行状态下，由于作用在控制面上的气动负载不同，因而由铰链力矩引起的液压作动筒压力也在变化。

the path of discus flight and the effects of the throw velocity/angle, spin and wind conditions on discus flight are discussed in this paper, considering the aerodynamic force on the discus.

从铁饼在空气中飞行所受到的气动力出发，阐述铁饼飞行的轨迹和铁饼出手时的速度、角度、自转角速度和风作用对成绩的影响。

the aerodynamic coefficient varies with dynamic pressures always linearly, no matter what a rigid aerodynamic force may be linear or non-linear.

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。

down force : the aerodynamic force that is applied in a downward direction as a car travels forwards.

下压力：当车辆向前行驶时，空气动力所施加的向下的力。

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着，如通过改善造型可使空气阻力系数由0.7509降为0.5759。

on the basis of static aerodynamic force tests and dynamic response tests, the galloping and (vortex-induced) oscillation performances of h-shaped booms were investigated.

通过节段的静力和弹簧悬挂动力试验，对h型吊桿的驰振和涡激振动性能进行分析。

this paper presents a method for determining unsteady aerodynamic force on oscillating blade of wind turbine, both stalled and unstalled.

本文给出了确定风力透平叶片振动时二元非定常气动力解法，包括在非失速和失速两种条件下的非定常气动力。

instead, socha says, 「the snake is pushed upward -- even though it is moving downward -- because the upward component of the aerodynamic force is greater than the snake」s weight.」

相反地，索洽说：「这种蛇被向上牵引着——即使它们是在向下移动——因为向上的空气动力力度大于蛇本身的体重。」

this article describes the wind tunnel tests of the superstructure models of fifteen ships and the aerodynamic force acted on these models during the tests.

本文介绍十五艘水面船舶上层建筑模型的风洞试验及试验时作用于模型上的空气动力。

by contrasting the computed aerodynamic force of flexible flapping-wing and rigid wing, it is found that if the flexibility is controlled suitable, it can enlarge the lift and thrust effectively.

通过计算分析柔性扑翼的气动特性发现，控制适当的话，柔性变形能大大改善扑翼的气动性能。

in order to study the flexible wing, the lift force experimental research was put up on the aerodynamic force measurement experimental platform which was designed and developed by authors.

以柔性翅为研究对象，在自行研制的气动力测量试验平台上进行升力试验研究，旨在为柔性翅的理论研究提供依据。

for fully unsteady aerodynamic force is calculated with green's function method, the results of flutter analysis are accurate.

完全非定常气动力由格林函数方法直接计算，颤振分析结果準确。