庭院的高墙和较高的温度导致这架黑鹰在其自身的旋翼洗流中下坠。旋翼洗流是一种“具有动力的下坠”，这是种很危险的空气动力学状态。
The high walls of the compound and the warm temperatures had caused the Black Hawk to descend inside its own rotor wash-a hazardous aerodynamic situation known as "settling with power."
该旋翼使飞行方向，在垂直起降和向前飞行，利用空气动力学。
The rotor wing gives flight direction during VTOL and forward flight, using aerodynamics.
仿生学和空气动力学研究均表明，对于特征尺寸相当于鸟类或者昆虫的微型飞行器来说，扑翼飞行器要优于固定翼和旋翼飞行器。
Research on bionics and aerodynamics indicates that flapping mode is better than rotorcraft and fixed-wing mode when they are about the size of small birds.
该旋翼产生的电梯在垂直起降，利用空气动力学。
The rotor wing produces lift during VTOL, using aerodynamics.
旋翼干扰空气动力学问题一直是旋翼飞行器空气动力学的研究热点和难点之一。
Research on the aerodynamic interaction between the rotors and components of rotorcraft have been a very important aspect and a very challenging subject in rotorcraft Aerodynamics.
旋翼干扰空气动力学问题一直是旋翼飞行器空气动力学的研究热点和难点之一。
Research on the aerodynamic interaction between the rotors and components of rotorcraft have been a very important aspect and a very challenging subject in rotorcraft Aerodynamics.
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