• 表面积冰位置变化气动系数影响最大

    The horn location on airfoil surface has the most severe effects on airfoil coefficients.

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  • 积冰几何形状翼型气动系数影响复杂的。

    The ice accretion geometric characteristics have complex effects on airfoil aerodynamic coefficients.

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  • 模型精确估计气动系数其中包括重要稳定

    The present model is capable of estimating aerodynamic coefficient ratios including the important static stability margin.

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  • 配置弹丸气动系数预测必不可少的评估设计性能

    The prediction of aerodynamic coefficients for projectile configurations is essential in assessing the performance of new designs.

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  • 基于叶素修正理论机翼气动系数计算公式,提出分析叶定螺旋桨方法

    A new method for analyzing twin-blade fixed-pitch propeller was proposed based on the theory of corrected blade foil and aerodynamic formula of 3-d wing.

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  • 新款车的前后区域均进行了力学微调,这样做旨在确保最大限度地平衡后轴升力系数

    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.

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  • 建立了机动弹道数学模型,给出气动系数速度迎角高度函数合式,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.

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  • 通过气动连续样的对比,测出了在流动注射进样下分散系数

    The dispersion coefficients of calcium and magnesium were estimated by comparison with continuously pneumatic feed.

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  • 计算得到不同流线型列车整体大小排序与其气动阻力系数排序完全一致

    The order of total slenderness ratios of the five trains is as same as that of aerodynamic drag coefficients.

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  • 论文主要研究从弹丸自由飞行数据如何准确地系数

    This paper mainly studies how to accurately fit the air dynamics parameter by the ballistic data of projectiles' free flight.

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  • 不论刚体气动线性还是非线性气动系数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.

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  • 进行亚音速气动分析时,应用线速度理论计算运载器的气动系数,而后进行回归分析,得到运载器亚音速飞行时气动特性模型

    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.

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  • 试验得到了具有典型倾角不同风向,拉索模型上的平均风压脉动风压系数以及气动系数

    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.

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  • 对在各向同性均匀弹性具有恒定热传导系数的球面上进行加热理想情况下计算陨星由于气动力学加热而产生的应力

    Thermal stress in meteoroids by aerodynamic heating is calculated for the ideal case of an isotropic, homogeneous, elastic sphere being heated at the surface with a constant heat transfer coefficient.

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  • 根据气动系数脉动量急剧上升起始确定抖振起始边界

    The buffet onset boundary is defined as the begin point of increased suddenly fluctuating value of aerodynamic coefficients.

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  • 考虑了不同飞行不同燃料气动参数包括升力系数阻力系数俯仰力矩系数变化规律

    The change rules of aerodynamic parameters including lift coefficient, drag coefficient and pitch moment coefficient have been analyzed when Angle of attack and fuel flow rate is changed.

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  • 针对跨度桥面桥梁分力系数气动干扰问题,采用风洞试验方法某在建大跨度双幅桥面桥梁的气动干扰效应进行研究。

    The aerodynamic interference effects on aerostatic coefficients of twin deck Bridges with large span were investigated in details by means of wind tunnel test.

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  • 采用数值模拟计算方法,计算横风作用时气动升力系数气动横向系数力矩系数得出系数车辆速度风速之间的变化关系。

    Using numerical computation of fluid flow, the coefficients of vertical force, lateral force and rolling moment caused by cross-wind were calculated, which were related to train speed and wind speed.

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  • 适当延长地板提高气动阻力系数测量精度

    By extending length of the test floor properly, the aerodynamic drag coefficient can be measured more precisely.

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  • 从外挂对载机气动特性影响计算方法出发,分析了现役某型战机外挂ZC-1航空侦察吊舱机升力系数、阻力系数气动中心的影响,得出了具体的计算结果。

    This paper has analyzed and calculated the influence of external ZC-1 scout equipment on the lift coefficient, damp coefficient and aerodynamic center of the fighter plane.

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  • 给出锁定状态不同振动条件系数变化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.

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  • 系数曲线揭示了折叠非折叠气动特性差别原因

    The force curves make the reason of the differences of aerodynamics between flapping wing with and without wing flexure clear.

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  • 静力三分力系数用于描述桥梁静力作用,气动导数颤振抖振分析方法的核心。

    Static coefficients are defined to describe the static effect of wind on bridge, and the aerodynamic derivatives are used to describe the aerodynamic effect.

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  • 试验数据分析结果表明,不同客车前部造型气动影响非常显著,通过改善造型使空气阻力系数0.7509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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  • 通过195个研究方案对比研究,目前阶段数值模拟的结果风扇转子气动负荷系数达到0.65。

    The aerodynamic load coefficient of transonic fan rotor has reached 0.65, as obtained through comparison research on 195 projects which aim at improving the transonic fan rotor aerodynamic load.

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  • 同时比较大小叶片设计方案全为大叶片方案性能发现采用大小叶片可提高静压恢复系数,降低损失

    And the results showed that the performance of the diffuser with splitter blade was improved. The pressure recovery coefficient was (increased) and the aerodynamic loss coefficient was decreased.

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  • 计算结果表明气动系数分离规则的周期性变化,证明方法成功的可行的。

    The results show that the force coefficients and separation bubble are periodic, which indicates the method is correct and feasible.

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  • 建立大型水平风轮转子/塔架耦合系统气动弹性模型,推导了转子/塔架耦合系统周期系数运动方程给出了气动弹性稳定性分析方法

    The vibration modal analysis method and the influent factors of the natural frequency of the rotating rotor of horizontal axis wind turbine rotor blades were presented.

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  • 建立大型水平风轮转子/塔架耦合系统气动弹性模型,推导了转子/塔架耦合系统周期系数运动方程给出了气动弹性稳定性分析方法

    The vibration modal analysis method and the influent factors of the natural frequency of the rotating rotor of horizontal axis wind turbine rotor blades were presented.

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