Airports, also known as airports and airports, are more formally called air terminals. Airports come in different sizes. In addition to the runway, the airport usually has apron, air passenger station, maintenance workshop and other facilities, and provides airport control services, air traffic control and other services.
By the end of 2020, China has certified 24 1 civil aviation airports. By the end of 20021,there were 370 general aviation airports registered nationwide.
The earliest landing place of the plane is the grass, usually the circular lawn. Planes can take off and land at any angle along the favorable wind direction, and there will be anemometers and hangars around them (because planes at that time were usually made of wood and canvas, they would not be hit by wind and rain, and they would not be exposed to the sun and rain).
After that, the area of soil field was used to avoid the increase of lawn resistance. But the soil yard is not suitable for humid climate, otherwise it will be muddy. With the increase of aircraft weight, the requirements for take-off and landing have also increased, and concrete runways have begun to appear. This runway is suitable for any weather and any time.
The oldest airport in the world is controversial, but College Park Airport, which was established in 1909 and located in Maryland, USA, is the oldest airport in the world and is still in continuous operation, although it is only a small airport.