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单词 Spacecraft propulsion
释义

Spacecraft propulsion

中文百科

航天器推进

NASA太空中心里试验中的RS-68发动机
利用行星引力减速
利用行星引力加速的示意图,现在的太阳系内航行非常依赖这种方法加速
太阳帆的想像图

太空飞行器推进是任何加速太空飞行器和人造卫星的方法,目前已知具有许多方式,每一种方式都有弱点与优点。目前许多推进方式是采用火箭。

喷气发动机

电磁加速器

  • 离子推进器
英语百科

Spacecraft propulsion 航天器推进

A remote camera captures a close-up view of a Space Shuttle Main Engine during a test firing at the John C. Stennis Space Center in Hancock County, Mississippi.
Artist's concept of a solar sail
Rocket mass ratios versus final velocity, as calculated from the rocket equation
Due to energy carried away in the exhaust, the energy efficiency of a reaction engine varies with the speed of the exhaust relative to the speed of the vehicle, this is called propulsive efficiency

Spacecraft propulsion is any method used to accelerate spacecraft and artificial satellites. There are many different methods. Each method has drawbacks and advantages, and spacecraft propulsion is an active area of research. However, most spacecraft today are propelled by forcing a gas from the back/rear of the vehicle at very high speed through a supersonic de Laval nozzle. This sort of engine is called a rocket engine.

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