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

    模型精确估计气动系数其中包括重要稳定

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

    不论刚体气动力线性还是非线性,气动力系数变化的趋势均呈线性

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  • 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.

    建立了机动弹道数学模型,给出气动力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。

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  • 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.

    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力系数,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

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  • 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.

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

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  • 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.

    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

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

    适当延长地板提高气动阻力系数测量精度

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  • 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.

    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,得出具体的计算结果。

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  • It is shown that the technique can obviously reduce the aerodynamic drag coefficient of the model.

    结果表明:内部声激励能够明显地降低车身模型空气阻力系数

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  • 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.

    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。

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  • After aerodynamic optimization of an unmanned vehicle with the methods mentioned above, the lift coefficient has an increase of 21 % and the ratio of lift to drag has an increase of 6. 7%.

    通过优化无人机外形取得了意义的结果,优化后升力系数增加21%,提高了6.7%。

    youdao

  • 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,不同客车前部造型气动力影响非常显著,通过改善造型使空气阻力系数由0.7509为0.5759。

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  • The Reynolds number effect of the mean aerodynamic force coefficient is studied; the influence of ratio of bridge deck width to its height on three mean coefficients is shown too.

    研究桥梁断面分力系数雷诺数效应比对断面三分力系数雷诺数效应影响

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  • Compared with cylindrical holes, the converging slot holes at the upstream of the throat exhibit both higher cooling effectiveness and lower aerodynamic loss coefficient.

    圆形相比,位于喉部上游位置收敛缝形孔具有好的冷却效率具有低损失系数

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  • Also the effect of different ice shapes on lift and drag coefficient were assessed. The results indicate that the glaze ice has the most adverse impact on airfoil aerodynamic performance.

    另外还计算不同机翼阻力影响结果表明瘤状冰对机翼气动特性影响最大

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  • The unique aim of aerodynamic designer is always to enhance lift coefficient and reduce drag coefficient.

    一直空气动力设计工作者追求目标

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  • 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.

    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,降低空气动力损失

    youdao

  • 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.

    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,降低空气动力损失

    youdao

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