Airplane

Airplane

Airplane also named Fixed-wing Aircraft. Fixed-wing Aircraft refers to the aircraft with wings, which fly in space or the atmosphere depend on its own power with one or more engine. Fixed wing aircraft is the most common type of aircraft. The power source comprises a piston engine, turbo propeller engine, turbo fan engine or rocket engines and so on. The aircraft is indispensable transport tools in modern life.

飞机具有两个最基本特征：其一是它自身的密度比空气大，并且它是由动力驱动前进；其二是飞机有固定的机翼，飞行器它的密度小于空气，那它就是气球或飞艇。如果没有动力装置，只能在空中滑翔，则被称为滑翔机。飞行器的机翼如果不固定，靠机翼旋转产生升力，就是直升机或旋翼机。

The history

At the beginning of twentieth Century, the Wright brothers of the United States made a great contribution in the history of the development of airplane. In that time, most people believes that the aircraft flying by its own power is impossible. While the Wright brothers did not believe this point. They tried to gliding flight for 1000 times from 1900 to 1902. After persistent efforts they finally created the first manned aircraft by its own power in 1903. The manned aircraft was named fly No. 1, and it got the successful test flight. In fact, there is a story why the Wright brothers create aircraft. This is Christmas day, the Wright brothers ‘s dad came back home and bright a Christmas gift. The two brothers opened the box and seem a strange toy. They don not know how to play it. Their father showed the way. He make the above rubber band tightening, then,loosen one's grip. sees the front like a windmill things around, with the toy will fly into the air. "Oh, it's so interesting, it can be like birds flying in the sky!" Since then, the Wright brothers became interested in flying, and always think: if one can fly just fine! After growing up, they opened a bike shop, while engaged in bicycle research side of flight. A few years, they have a lot of aviation knowledge. Then he started making their aircraft. They first V in the Glen eagle is to observe how to fly, and then take it step by step draw down. In...