查询词典 aerodynamic

Air pressure distribution on sur-face of train(3 cars)and aerodynamic drag coefficient are obtained with sim-plified bogies and pantographs in calculations. Computational results are alsocompared with those given by model test in wind-tunnel.

计算中对转向架和受电弓处作了简化处理，得到了三车编组情况下列车表面压力分布及气动阻力系数，并与列车模型风洞实验结果进行了对比。

This paper presents a mathematical model that employs momentum method to calculate the aerodynamic drag of the truck. This model achieves higher precision than previous methods without consideration of induced drag.

本文提出了动量法计算汽车气动阻力的数学模型，该模型克服了此前的方法中忽略诱导阻力的缺点，显著的提高了计算精度。

Even the aerodynamic low-profile slim body, adjustable rear wing and "Flying Wing" suspension are designed to keep you planted and in charge.

即使是空气动力学低姿态的机身，可调尾翼和&飞翼&暂停的目的是让你种植和收费。

We studied the formation flight model of the UAVs in the presence of the aerodynamic coupling.

研究了无人机之间存在气动耦合的编队飞行系统模型。

A mathematical representation of the aerodynamic effects in close formation flight is presented.

针对近距编队飞行面临的相互气动影响问题，采用等效气动效应法建立了尾流气动影响的等效模型。

The curves of aerodynamic characteristics are provided for the wings in ground effect with different aspect ratios and endplate, the effects of aspect ratio and endplate on the position of wingtip vortex core and downwash angle are revealed.

计算结果给出不同展弦比和带端板地效翼的气动特性曲线，揭示展弦比和端板对翼尖涡涡核位置和下洗角的影响规律。

A calculated model for predicting wing download of the tiltrotor in hover and forward flight was given according to the aerodynamic interaction effect of the rotor downwash flow on the wing.

该模型中，旋翼在机翼处产生的诱导速度以及对机翼干扰的旋翼尾迹边界基于Weissinger-L升力面理论和自由尾迹方法计算，以考虑倾转旋翼桨叶的大负扭转和尖削带来的较大三维影响，机翼表面流则区分为弦向流及展向流，以分别计算向下载荷。

The SDGE is more prominent under the ground effect and the endplate further strengthens the aerodynamic performance of the wings; the wingtip vortex moves outwards due to the existence of the ground and the downwash angle is reduced.

在地面效应下，机翼的展向效应更为明显，端板将进一步提高机翼的空气动力性能；翼尖涡的位置受地面影响向外移动，下洗角相应减小。

In order to calculate the helicopter hover ceiling in OGE precisely, some aerodynamic parametem, such as tip loss effect, induced velocity distribution, the effect of rotor downwash on the fuselage and power transfer of engine into rotor, must be treated carefully.

准确计算直升机的悬停升限依赖于诸如桨尖损失系数，非均匀旋翼诱导速度分布，旋翼下洗引起的直升机增重效应及发动机与旋翼之间的功率传递系数等气动参数的准确度。

The theoretical and experimental investigations of discus flight indicate the following useful conclusions:the optimum combination of throw angle and discus inclination angle is 35°/26°at zero wind,while 45°is not the best release angle due to the aerodynamic force;different combinations of throw angle and inclination angl...

由于气动力的作用，45°并非铁饼的最佳投掷角度，实验和理论研究表明：无风时35°/26°的投掷角/倾角组合最佳；顺风和逆风投掷必须采用不同的投掷角/倾角组合才能获得当地条件下的最好成绩；铁饼出手时25r/s的自转速度已经可以满足稳定性的要求。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。