Crews spotted the tear in the wing as they unfurled it on tuesday . the tear forced nasa to halt the process before the wing was fully extended 在周二展开机翼时全体人员都观察到了机翼上的破缝。这个破缝迫使nasa在完全修理好机翼之前暂停进程。
When the tilt rotor vehicle is in hover , the aerodynamic download of the rotor flowfield imposes on the wing . in this time , the rotor / wing interaction is severe 倾转旋翼飞行器悬停时，旋翼的下洗流刚好作用在机翼上，此时，旋翼机翼间的气动干扰非常剧烈。
Columbia was destroyed and its seven astronauts killed because of heat shield damage on the ship ' s wing caused by foam falling off the fuel tank during launch “哥伦比亚”号航天飞机发射升空时，从其燃料箱上脱落的一块泡沫材料击中了机翼上的隔热板，最终导致航天飞机解体爆炸，七名宇航员丧生。
Through solving the unsteady flow fields of an airfoil - flap , the mechanism of buzz is intensively studied . on the basis of the unsteady flow fields of an airfoil - flap with an upper - wing spoiler , the mechanism of the upper - wing spoiler suppressing the buzz is researched . in additions , the comparisons of the unsteady flow fields of an airfoil - flap with and without a separator show that the separator reduce the speed of the buzz 从非定常流场计算出发系统的研究了嗡鸣发生的机理以及扰流片对嗡鸣起抑制作用的机理；应用能量法确定了嗡鸣发生的边界；并且研究了机翼舵面之间有隔膜和无隔膜以及机翼上有上翼扰流片和无上翼扰流片对嗡鸣发生边界的影响；得出了有意义的结论。
Later in the war , the hurricane served admirably in north africa , burma , malta , and nearly every other theater in which the raf participated . the hurricane underwent many modifications during its life , resulting in many major variants , including the mk ia , with interchangeable wings housing eight 7 . 7mm 0 . 303in guns ; the mk iic , with a merlin xx engine ; the mk iid , a tankbuster with two 40mm anti - tank guns plus two 7 . 7mm guns 飓风在它的发展过程中有过很多改进，发展出许多重要的变型,包括mk ia ，在翅膀上安装8挺7 . 7 mm机枪“飓风” mk iic型，装备一台“梅林” mk xx发动机“飓风” mk iid ，机翼上安装两挺7 . 7 mm机抢并且在机翼下吊挂两门40 mm反坦克炮。
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 摘要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。
The wing is modeled structurally by vibrational modes , which are used as amplitude of motion by a finite element analysis . conservative full - potential equation and three dimensional unsteady euler equation are used to compute the unsteady transonic flows around airfoil and wings under simple harmonic motion 以给定机翼模态分布下机翼上各点的模态值作为运动幅值，以三维非定常全位势方程和三维非定常euler方程为控制方程，求解三维机翼简谐运动下的非定常气动力。
