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1·Helicopters and other VTOL aircraft normally have an avoidance curve.

直升机和其他垂直起降飞机通常避免曲线。

2·VTOL aircraft is an under-actuated system with three degrees of freedom and two control inputs.

VTOL空间飞行器是具有三个自由度，两个控制输入的欠驱动系统。

3·Dust effects when driving over certain surfaces, rotor downwash effects for helicopters and VTOL aircraft.

粉尘影响驾车时的某些表面，转子影响直升机和垂直起降飞机。

4·The idea of a naturally stable aircraft is normal for fixed wing pilots but is quite unique for VTOL aircraft.

的想法，自然稳定的飞机是正常的，但固定翼飞机的飞行员是很独特的垂直起降飞机。

5·In the paper, according to the dynamics and kinematics principle of the four-rotor VTOL aircraft, non-linear and linear models were established.

文中根据四旋翼垂直起降机的动力学和运动学原理对其建立非线性模型和线性模型。

6·As the aircraft have now VTOL dynamics at all.

由于飞机现已在各垂直起降动力。

7·Based on the principle of flight of fan wing aircraft, realizing methods of VTOL are preposed by changing the Angle of attack and increasing chord length of the tail.

基于扇翼机的飞行原理，提出通过改变攻角以及增加尾部升力面弦长的方式提高气动效率，进而实现垂直升降的方法。

8·According to comparative analysis between the 2d mathematical model simulation and the of test model design of fan wing aircraft, the feasibility of VTOL is proven.

通过建立扇翼飞行器的二维数学模型进行模拟分析、设计试验模型并进行了相关实验比较分析，证明垂直升降的可行性。