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- The variation pattern between flutter critical wind speed of bridge with flat box deck and wind yaw angle is significantly affected by wind attack angle. 扁平箱形截面桥梁的颤振临界风速与风偏角的关系明显地受到风攻角的影响。
- However, in the case of non-zero attack angle, the flat box deck becomes bluff, the variation of its flutter critical wind speed is accordingly undulant as the wind yaw angle increases, and the lowest value will occur generally under skew wind. 而对于非0°风攻角的情况,扁平箱形断面的流线性变差,随着风偏角的增加其颤振临界风速呈起伏变化,最低值一般在斜风的情况下出现,此时,传统的平均风分解方法不再适用。
- wind yaw angle 风攻角
- This paper mainly studies yaw angle estimation and attitude control of Tracking and Data Relay Satellite(TDRS). 本文主要研究了中继卫星的偏航角估计和姿态控制问题。
- The train aerodynamic performance will change with different yaw angle and ground condition. 而在不同风向角和地面条件下列车的气动性能也会发生变化。
- The vehicle speed has much effect on the value of guide force and yaw angle velocity. 车速的变化对导向力和横摆运动有较大的影响。
- Speed feedback of yaw angle was realized through adding mode damping ratio of Dutch roll and adjusting mach number by height. 偏航角速率反馈以增加荷兰滚模态阻尼比,按高度及马赫数调参数实现。
- The influence of air injection on the performance of compressor is analyzed by altering the mass flow rate, injection angle, yaw angle and collocation of injectors. 本文采用数值模拟方法研究了进口叶尖喷气对低速离心压气机稳定工作范围的影响。
- The results show that total pressure recovery coefficient of this type inlet is increased in every yawed flight,and are less related to the yaw angle. 研究结果表明,这类进气道在各种侧滑状态下总压恢复系数较高,且与侧滑角的关系不大。
- The wind was whispering in the trees. 一阵风穿过树林沙沙作响。
- The wind whirled the dead leaves about. 风吹得枯叶在四处回旋。
- The boat heeled over in a strong wind. 船在强风吹袭下倾侧了。
- The shutters thumped the wall in the wind. 在风中百叶窗砰砰地碰在墙上。
- The plant was growing at an angle. 植物呈一定角度生长。
- I'll help you for yaw sister's sake. 看在你姐姐面上,我会帮你的。
- She was like a narcissus trembling in the wind. 她像一株在风中摇动的水仙。
- Still, it's an ill wind; you will have an unexpected holiday. 不过,这也并非完全的不幸,你会享受到一次意外的休假。
- The north wind set them shivering. 北风吹得他们浑身打颤。
- Analysis of Requirement to the Yaw Angle Error in Stripmap SAR Imaging 条带SAR成像对偏航角最大误差要求的理论分析
- The pitiless north wind blew for weeks. 凛冽的北风一连刮了几个星期。