查询词典 downwash

This was a single seat machine with a rotor driven by a 45 hp engine and had a vertical torque-balancing surface acting in the rotor downwash.

这是一个单议席机转子驱动的45马力引擎，有一个纵向力矩平衡旋翼下洗表面的作用。

The significantly increased diffusion and aerodynamics downwash effect, which are observed in the wind tunnel experiments and random walk simulations, should be not neglect in dispersion calculation.

风洞模拟实验和随机行走模拟均发现建筑物引起的扩散显著增强和明显的空气动力学下洗效应。

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。

During vertical flight or hover, the tailboom can hang from the lift unit in an orientation that is substantially parallel to the suspension structure and that minimzes resistance to downwash from the lift unit.

在垂直或盘旋飞行中，尾杆能以基本平行于悬挂结构的方向从空运装置悬挂且最小化空运对于来自空运装置的因机翼所产生的下降气流的阻力。

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。

It showed that the influences from gyro zero-position,rocket thrust eccentricity,launch mode and downwash flow field caused by helicopter are evident.

分析结果认为导弹陀螺零位、发动机推力偏心、导弹发射方式、直升机旋翼下洗流场等因素的影响是显著的，特别是在这些因素的综合影响下，初始弹道将出现很大的偏离。

With the increase in the downwash flow velocity, the entrainment coefficient decreased, and the exhaust flow temperature increased, resulting in the rapid increases of the exhausting duct temperature and the suppressor surface temperature.

旋翼下洗气流速度的增加，将造成红外抑制器的引射系数降低，出口气流温度升高，出口气流温度分布均匀度增加，并使整流罩及外套特征温度迅速增加。存在一个最佳旋翼下洗气流速度，使储物仓特征温度最低。

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。

Wet stack emission will reduce the lifting height of the flue gas, and it's not beneficial to gas diffusion; the momentum of the flue gas should be guaranteed to decrease the plume downwash and to promote gas diffusion; each of the emission index of the wet flue gas can meet the requirements for the environmental protection.

数值计算与分析表明，湿烟囱排放会增强对烟囱的腐蚀性，需采用特殊的防腐处理；湿烟囱直接排放会降低烟气抬升高度，不利于扩散；为减少烟流下洗，增强扩散，应保证烟气的出口动量；湿烟气各项排放指标能满足环保要求。

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。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。