Launch vehicle
A carrier rocket is a kind of spacecraft, is the payload in accordance with the scheduled speed and direction into the space of the rocket. Launch vehicles are generally a one-time use of the delivery system, the payload into the track, after the completion of the task, the launch vehicle was abandoned. The launch vehicle is an important part of the development of space technology. According to the propellant used, the launch vehicle includes three types: solid rocket, liquid rocket and solid-liquid hybrid rocket. According to the series, the launch vehicle includes single-stage rocket and multi-stage rocket two types; multi-stage rocket can be divided into series, parallel and series and parallel hybrid three. ...