2) low-level wind shear
低空风切变
1.
A typical low-level wind shear of thunderstorm activates long periodic oscillation of an aircraft, causing tracking deviation of the aircraft.
典型尺度的雷暴低空风切变以长周期振动频率激励飞机,使其偏离预计下滑航迹。
2.
With the methods of Navier-Stokes equation and the symmetrical mirror image, the numerical simulation is carried out about the three-dimensional fluent field produced by the low-level wind shear nearby airports; According to the computational results, the prediction about the location and the intensity of the wind shear can be made out.
分别采用Navier＿Stokes方程和镜像对称的方法,对机场区域附近发生低空风切变时所形成的三维流场进行了数值模拟;并根据结果对风切变发生的位置和强度提供有效的预测。
3.
An analysis of a low-level wind shear case at Guangzhou Baiyun airport on Jul 21, 2005 shows that this case was caused by downburst and gust front.
对2005年7月21日发生在广州白云机场的一次低空风切变飞行事件进行分析,发现此次过程是由超级单体风暴云产生的下击暴流和阵风锋造成的。
3) low altitude windshear
低空风切变
1.
The physical qualities of low altitude windshear can be further comprehended.
应用模糊逻辑建模与辨识的方法建立了微下击暴流模型 ,利用此模型对 A30 0飞机进场着陆时穿越微下击暴流进行了模拟 ,分析了低空风切变模型中高度因素的影响 ,说明了二维模型比一维模型更为优越。
4) low-level wind shear of thunderstorm
雷暴低空风切变
1.
The horizontal and vertical momentum loss caused by the shock of heavy rain in low-level wind shear of thunderstorms on the airframe and wing are analyzed,the water film thickness on the airframe and wings estimated,and the flight resistance resulted from raindrops-striking caused by the roughness of airplane when the heavy rain shocks the airplane is discussed.
分析了雷暴低空风切变中大雨滴冲击飞机的机身和机翼而引起的水平和垂直动量损失,估算了大雨累计在机身和机翼上的水膜厚度,并讨论了因遇到大雨雨滴冲撞而粗糙化的机体所产生的阻力。
5) low vacuum compannd ventilation
低真空复合通风
6) cold air conditioner
低温送风空调
1.
Through the experimental study on the double shutter in the cold air conditioner, we use the similitude theory and draw the norm equation that indoor airflow should be followed.
本文将常规的双层百叶风口应用到低温送风空调系统中 ,利用相似理论导出室内送风气流应遵循的准则方程。
补充资料：“海盗“双发双座亚音速低空攻击机
Image:11727525629328069.jpg
“海盗“双发双座亚音速低空攻击机
“海盗”攻击机安装两台罗.罗公司的rb.168—1a“斯贝”101型涡轮风扇喷气发动机，进气口呈竖椭圆形。在尾喷口之后的机身尾锥，是一个蛤壳状开闭的减速板，上方是t形尾翼。其垂直尾翼前方有一根背脊与气泡双座座舱盖连成一线。机头是雷达罩锥体和一个空中加油杆。机身内部有一个放置式弹舱，可携带4颗454千克炸弹，两侧的后掠梯形中单翼下面，另有4个挂架，可挂炸弹、火箭、导弹或副油箱。
“海盗”有三大改型：“海盗”s.mk. ⅰ 舰载攻击机，“海盗” s.mk. ⅱ （ⅱa、ⅱb）、“海盗”s.mk. 50 出口南非的陆基型攻击机。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。