How did the rocket go into space?

Rocket is a kind of jet propulsion device, which uses hot air to jet backward at high speed and uses the generated reaction force to push forward. It has its own combustion agent and oxidant, and does not rely on oxygen in the air for combustion. It can fly in the atmosphere and outer space. With the consumption of rocket propellant in flight, the rocket mass is decreasing, and it is a variable mass flying body. ?

Modern rockets can be used as fast and long-distance transportation tools, such as sounding, launching satellites, manned spacecraft, space stations, boosters of other aircraft and so on. If it is used to drop combat warheads (warheads), it constitutes a rocket weapon.

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Rockets can be classified in different ways. According to different energy sources, it can be divided into chemical rockets, nuclear rockets, electric rockets and photon rockets. Chemical rockets are divided into liquid propellant rockets, solid propellant rockets and solid-liquid mixed propellant rockets. According to different purposes, it can be divided into satellite launch vehicles, mine-laying rockets, meteorological rockets, hail suppression rockets and various military rockets.

According to whether there is control or not, it can be divided into controlled rockets and uncontrolled rockets. According to the series, it is divided into single-stage rockets and multi-stage rockets. According to the range, it is divided into short-range rockets, medium-range rockets and long-range rockets. Although there are many classification methods for rockets, their components and working principles are basically the same.

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