论文部分内容阅读
直升机一出现,就立即以其新颖的特点获得世人的关注。直升机能不依赖机场而垂直起飞和降落,能长时间在空中“站”着不动——悬停,能向左或向右侧着飞,甚至向后退着飞,能贴着地皮飞行,能在悬停状态下360°转向……这些独特之处使它在军用或民用方面都获得广泛的应用。直升机为什么有这么多独特的本领呢?这全仗着它装有巨大的飞速旋转的机翼——旋翼。因此,有人把直升机事业称为“旋转的事业”。
As soon as the helicopter appeared, it immediately gained the world’s attention with its novel characteristics. Helicopters can take off and land vertically without depending on the airport, can stay in the air for long periods of time, stand still, hover to the left or to the right, fly backwards, fly close to the ground , Can be turned 360 ° hovering ...... These unique features make it widely used in military or civilian applications. Why does the helicopter have so many unique skills? It relies on it with a huge rapid rotation of the rotor - rotor. Therefore, some people refer to the helicopter business as “rotating business ”.