Airliner? What kind of plane are you referring to?

Specially designed airliners appeared in 1919. Britain was the first to build a DH-16 single-engine 4-seater airliner. Among the propeller passenger aircraft that followed, the DC-3 (1935) developed by the United States was considered the most outstanding.

The appearance of jet airliners in the 50s was a major development in civil aviation technology. 1956 The passenger plane, which was put into use in 1958, has a cruising speed of more than 800 kilometers per hour and a flight altitude of more than 10,000 meters. Typical passenger aircraft include the British "Comet", the Soviet Union's Tu-104, the United States' Boeing 707, and the medium and short-range passenger planes that appeared in the early decades use turbofan engines with low fuel consumption, and the wings have high-efficiency lifting devices to shorten the take-off and landing distance.

Representative aircraft include the Boeing 727, Boeing 737, DC-9 of the United States, and the "Trident" of the United Kingdom. The wide-fuselage airliner that appeared in the 70s greatly increased its passenger capacity, from 100,150 to 350,500 in the previous airliner. The representative models are the Boeing 747, DC-10 and L-1011 of the United States, the A-300 of Europe and the medium-range passenger aircraft developed by the early Ils of the Soviet Union are characterized by fuel economy, low noise and advanced on-board equipment.

Representative models include the Boeing 757 and Boeing 767 in the United States, and the A-310 in Europe. Airliners, in a broad sense, are civil aircraft. Civil aircraft refer to all aircraft used for non-military purposes.

Civil aircraft are also called civil aircraft. According to their respective uses, civil aircraft are divided into two categories: airline aircraft that perform commercial flight flights and general aviation aircraft used in general aviation. In a narrow sense, passenger aircraft refers to civil airliners, which are large and large passenger capacity collective flight transport vehicles, which are used to travel between domestic and international commercial flights.

Civil airliners are generally operated by airlines. The passenger aircraft flying on commercial flights are mainly divided into trunk airliners and regional airliners. Passenger aircraft are divided into short-range, medium-range, and long-range according to their range.

Passenger aircraft are divided into small, medium and large according to take-off weight and passenger capacity. Passenger aircraft are divided into propeller passenger aircraft and jet passenger aircraft according to the driving mode. The 1920s and '30s were a period of great development in aviation history, when the most successful airliner was the Douglas DC-3, whose high passenger capacity made airlines profitable.

After World War II, there was a huge shift in the world of civil aviation, with a large number of aircraft being used for commercial passenger transport. In the 1950s, de Havilland's Comet became the first jet airliner in history. Boeing's Boeing 707 became the first widely used jet airliner.

In the 1970s, Boeing's Boeing 747 became the first wide-body airliner in history, and its sheer capacity made air travel no longer a luxury. The Concorde supersonic airliner, a UK-France partnership, was the first supersonic airliner to be put into operation in history, but it was not commercially successful. The largest civil airliner at the moment is the Airbus A380 from Airbus

The aircraft that carries passengers is called a passenger plane, and the one above should not mislead people, the passenger plane may be a propeller or a jet. There are many propeller planes used on regional flights in China.

Compared with cargo aircraft, the main manned aircraft is passenger aircraft.

It's a passenger plane that doesn't use propellers, but emits a lot of gas through fuel combustion to propel airliners, and you can go up and see it.

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Dear, airplanes belong to the means of transportation, and taking airplanes belongs to the use of air vehicles.

Aeroplane (airplane) refers to a heavier-than-air aircraft with one or more engines that generates forward thrust or pull, and lifts from the fixed wings of the fuselage, flying above, middle and below the atmosphere. The airplane is one of the most significant inventions of the early 20th century, recognized as invented by the American Wright brothers. Their flight on December 17, 1903, was recognized by the Fédération Internationale de Nautical (FAI) as "the first controlled, sustained powered flight of a heavier-than-air aircraft", and in the same year they founded the Wright Aircraft Company.

Since the invention of the airplane, the airplane has increasingly become an indispensable tool of modern civilization. It profoundly changed and affected people's lives, and opened the history of people's conquest of the blue sky.

An airplane has two basic characteristics: one is that it is denser than air, and it is powered to move forward; The second is that the aircraft has fixed wings, which provide lift and allow the aircraft to soar through the sky. Those who do not possess the above characteristics cannot be called an aircraft, and these two are indispensable.

For example, if a vehicle is less dense than air, it is a balloon or an airship. If there is no power unit and can only glide in the air, it is called a glider; If the wing of the aircraft is not fixed, it is a *** or gyrocopter if it relies on the rotation of the wing to generate lift. Hence the precise definition of an airplane is:

Airplanes are power-driven, fixed-wing, and heavier-than-air aircraft.

Aircraft heavier-than-air aircraft with power plant and fixed wings. The power plant is used to generate push (pull) force or power lift, and the wing is used to generate lift when moving in the atmosphere. Some people also refer to aircraft other than balloons and airships as airplanes.

An airplane is a machine that can fly, hehe.