Aerospace Vehicle
Author: Tianjiang Shuo
Website: https://cislunarspace.cn
Definition
An aerospace vehicle is any vehicle that enters or passes through space, including ballistic missiles, launch vehicles, artificial satellites, spacecraft, space shuttles, and various future space-transportation vehicles. This definition encompasses both reusable space-transportation vehicles and traditional vehicles such as ballistic missiles, launch vehicles, and artificial satellites treated as special aerospace vehicles, but excludes cruise missiles, aircraft, airships, and other vehicles that fly exclusively within the atmosphere.
Core Elements
Flight Phase Division
The motion of an aerospace vehicle can be divided into three fundamental phases:
| Phase | Definition | Typical Vehicles |
|---|---|---|
| Powered Phase | From liftoff to main engine cutoff | Ballistic missiles, launch vehicles, space shuttles |
| Orbital Phase | On-orbit operation after main engine cutoff | Satellites, space stations, spacecraft |
| Reentry Phase | From deorbit braking to landing | Spacecraft reentry capsules, space shuttles, warheads |
Different vehicles include different phase combinations: artificial satellites have only an orbital phase, launch vehicles have only a powered phase, spacecraft include the orbital and reentry phases, while ballistic missiles and space shuttles encompass all three phases.
Major Vehicle Types
- Ballistic missile: A missile that follows a predetermined ballistic trajectory to a target, with ranges from hundreds to tens of thousands of kilometers, evolving from liquid-fuel to solid-fuel propulsion
- Launch vehicle: A vehicle that delivers payloads into predetermined orbits, developed from liquid-fuel ballistic missiles
- Artificial satellite: An unmanned spacecraft orbiting Earth, used for reconnaissance, communication, navigation, meteorology, and other missions
- Spacecraft: A manned or cargo vehicle capable of traveling between Earth and space stations
- Space shuttle: A reusable manned space-transportation vehicle combining rocket launch and aircraft landing capabilities
- Boost-glide vehicle: A hypersonic vehicle boosted to high altitude by a rocket and then gliding unpowered within the atmosphere
Development History
The origins of aerospace vehicles can be traced back approximately 800 years to black-powder rockets that appeared in China. In 1926, Robert Goddard of the United States built the first liquid-fuel rocket. After World War II, the United States and the Soviet Union developed series of ballistic missiles and launch vehicles based on the V-2 rocket. In 1957, the Soviet Union launched the first artificial Earth satellite, and in 1961, Gagarin achieved the first human spaceflight. China launched the Dongfanghong-1 satellite in 1970, achieved manned spaceflight in 2003, and is currently advancing space station construction and the development of reusable launch vehicles.
Application Value
Aerospace vehicles are the fundamental tools for human exploration and utilization of space, playing an irreplaceable role in national defense, scientific research, the national economy, and deep-space exploration. Reusable launch vehicles and space-transportation aerospace vehicles are key development priorities for all major spacefaring nations.
Related Concepts
References
- 郑伟, 安雪滢, 周祥, 何睿智. 空天飞行力学[M]. 国防科技大学, 2026.
- 贾沛然, 陈克俊, 等. 远程火箭弹道学[M]. 国防科技大学出版社.
- 任萱, 肖峰. 人造地球卫星轨道力学[M]. 国防科技大学出版社.