英语释义

1. an airstream directed downward (as by an airfoil)

片语

downwash turbulence下洗流

downwash correction下洗流修正

downwash distribution下洗流分布

downwash flow下洗气流

downwash gradient洗流梯度

complete downwash总下洗

downwash angle下洗角

downwash recirculation下洗回流

downward movement向下运动

downwash probability下沖机率

英汉例句

• rotor wake effects are modeled in the form of a correction applied to the angle of attack along the blades. this correction is obtained by computing the local induced downwash with free wake analysis.

  旋翼尾流的作用通过自由尾流分析来求解局部的诱导下洗速度以修正翼型攻角。

• finally the rotor downwash velocity distribution along rocket trajectory is found with brief analysis.

  最后，计算结果展示了旋翼下洗速度在火箭轨道上的分布，并作了简要分析。

• the forming, the distribution and the influence of the downwash flow on helicopter main rotor are discussed.

  探讨了直升机旋翼下洗流的形成、分布和影响。

• the results show that the main aerodynamic effect between the rotor and fuselage is that of the rotor downwash on the fuselage aerodynamic loads.

  结果表明，旋翼与机身之间的气动力干扰，主要是旋翼下洗尾流对机身气动力的影响。

• an analytical method to predict the effects of rotor downwash on engine jet was proposed to investigate the flow pattern of helicopter engine jet.

  通过考察旋翼洗流对发动机喷流的影响来研究直升机发动机喷流的流动形式。

• image method ideal vortex model is used for the analysis of how ground effect impacts wingtip vortex and airflow downwash angle.

  采用镜像法理想涡模型分析了地面效应对翼尖涡位置和气流下洗角的影响；

• other equipment in the cavernous space can replicate the downwash from rescue helicopters, and generate rain, darkness, 120-mile-per-hour winds, smoke and fire.

  这个巨大的空间里还有其他一些设备，可以模拟救援直升机的下旋气流，也能制造降雨、黑暗、时速120英里的大风，以及烟和火。

• secondly, the precision influence of missile air attack on downwash flow is discussed.

  其次研究了这种变化对空中攻击精度的影响。

• problem was we wanted to save them with a helicopter, but the so-called downwash , the turbulence under the helicopter made it impossible to get close from above.

  问题是，偶们想用直升机来进行救援，但是所谓的气流下洗，直升飞机下面的湍流使偶们根本无法从上面接近。

• experiment results show that wake region behind wind tower can cause velocity deficit, turbulence excess and downwash phenomenon.

  试验结果表明排气塔后部的尾流区能引起速度亏损、湍流增强和下冼现象。

• the averaged gas velocity of flowing backward between the exhausting duct and the mixture tube increases with the rise of the main nozzle flux and the downwash flow velocity.

  实验发现外套出口和混合管之间夹层存在气流倒流现象， 倒流平均速度随着主喷管流量和下洗气流速度增加而增加。

• first, free wake analysis was carried out to calculate the rotor wake geometry and the downwash around the engine jet space.

  首先应用自由尾流分析技术来计算旋翼尾迹和发动机绕排流空间的洗流速度。