Aircraft was invented after countless inventors and engineers put forward flight theory, constantly improved process design and constantly introduced one new design after another. The Wright brothers made their first manned sustained power flight five kilometers south of Xiaoying Town, North Carolina, USA. Flight duration 12 seconds, flying over the ground at the speed of 10.9 km per hour.

Before the19th century, the dream of flying into the sky never stopped, but it was mainly realized by imitating birds flapping their wings or making hot air balloons. Sir George George Kelly?? British inventor was the first inventor to put forward the theory of fixed-wing aircraft and conduct rigorous research. Kelly made a glider model, which is the first aircraft heavier than air and has the layout structure of modern aircraft.

The air steam carriage and the magical glider Sir Kelly's glider greatly aroused people's enthusiasm. Englishmen John Stilling Ferrer and William Hansen both put forward the idea of carrying a man into the sky with a steam engine, although it was very difficult. Sterling Ferro used his efficient steam engine to realize the first flight of a steam-powered unmanned monoplane. Although it lasted for a short time, it was the first attempt to drive a fixed-wing aircraft with a propeller.

French engineer Clemente Ade designed and built a steam-driven plane. His design is like a bat. The steamship successfully flew about 50 meters, but only 20 centimeters above the ground.

/kloc-In the late 20th century, many key figures were trying to improve the stability and maneuverability of gliding aircraft. Including Englishman Horatio Phillips, German Otto Lilienthal, Englishman Percy Pilcher and Australian lawrence hargrave, all made great contributions to the continuous improvement of gliders.