飞鸟在空中自由飞翔，不飞了就夹着翅膀在地上蹦来蹦去。如果汽车也插上翅膀，能飞能跑，那不是更加方便了吗？这已经不是空想，最近就有一种和飞鸟差不多的汽车，如果要到空中航行，只要一个人就可以在十分钟里给它装好翅膀和尾巴后起飞。
等到降落地面再开动的时候，只要把翅膀和尾巴拆去，就可以跑了。
直升机随时随地都能起飞，应该说是方便的了，但是，它还存在着不少缺点。譬如，那么大的螺旋桨，不断地在飞机顶上旋转着，如果在森林或者电线杆上空飞行，螺旋桨就很容易碰坏。它还要求在坚硬和平坦的地面上降落，否则，就容易发生事故。
同时，它只能够做短距离的滑行，在战争中不能很好地隐蔽起来，容易遭到敌人的袭击。
于是，一种新颖的飞行汽车就出现了，它克服了直升机的缺点。它的螺旋桨比较小，而且是装在一种护风圈里的。
它用汽油发动机或者燃气轮机带动螺旋桨，向护风圈下面压出空气，上面的压力降低，汽车就腾空而起。
前进和后退是依靠前后两个螺旋桨的转速来调节的；前进的时候，前面的螺旋桨速度降低，头部就向前倾，来获得前进的推力；后退的时候动作相反。至于转弯，用方向舵来控制。
目前，有些国家正在试制这种汽车。譬如，有一种载重450公斤、航行速度每小时90公里的飞行汽车，它能够在普通的居民点起飞和降落，也能够做低空飞行，外廓比较小，降落后可以用车轮在不太宽的马路上行驶，同时，它还可以用来救护、消防和除虫等。因为它能飞能跑，不依靠其他交通工具就可以独立地完成运输任务。
English version
The birds fly freely in the air, and when they don't fly, they wander around the ground with their wings. If the car is also plugged in, can fly and run, isn't it more convenient? This is no longer a fantasy. Recently, there is a car similar to a flying bird. If you want to sail in the air, you can take off your wings and tail in ten minutes.
When you land on the ground and start again, just remove the wings and tail and you can run.
It is convenient to take off the helicopter anytime and anywhere, but it still has many shortcomings. For example, a large propeller is constantly rotating on top of the aircraft. If flying over a forest or pole, the propeller is easily damaged. It also requires landing on a hard and flat surface, otherwise it is prone to accidents.
At the same time, it can only be used for short-distance taxiing, which is not well concealed in the war and vulnerable to enemy attacks.
Thus, a novel flying car emerged that overcomes the shortcomings of the helicopter. Its propeller is relatively small and is housed in a windshield.
It uses a gasoline engine or a gas turbine to drive the propeller, and the air is pressed out under the windshield. The pressure on the upper side is lowered and the car is vacated.
Forward and backward are adjusted by the speed of the two propellers before and after; when advancing, the speed of the front propeller is reduced, the head is tilted forward to obtain the forward thrust; when it is retracted, the action is reversed. As for the turn, use the rudder to control.
Currently, some countries are experimenting with such cars. For example, there is a flying car with a load of 450 kilograms and a speed of 90 kilometers per hour. It can take off and land at ordinary settlements. It can also fly at low altitudes. The outer profile is relatively small. Driving on the road, it can also be used for ambulance, fire fighting and de-worming. Because it can fly and run, it can carry out transportation tasks independently without relying on other means of transportation.
（文编译：飞行汽车 www.flycar.com.cn）
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