Engine lowers cost of getting into space

May 24, 2007
Researchers at Georgia Institute of Technology have developed a prototype satellite engine that uses less fuel to carry loads into space.

Engine lowers cost of getting into space

 

The trick is that, once in space, the engine uses solar cells, letting it take off with 40% less fuel, and the exhaust is fine-tuned to get more thrust. The last point means controllers on the ground can throttle the engine, so it needn't run at maximum thrust all the time, as do most rocket engines on satellites.

In the ion propulsion engine, xenon atoms are injected into a discharge chamber where they are stripped of their electrons and turned into ions. Light electrons are held back by a magnetic field, while heavier ones are accelerated out the back end by an electric field, generating thrust. The electric and magnetic fields generated are the mediating forces in controlling how much thrust the engine creates.

Sponsored Recommendations

June 27, 2025
Ensure workplace safety and compliance with our comprehensive Lockout/Tagout (LOTO) Safety Training course. Learn critical procedures to prevent serious injuries.
June 27, 2025
Join our expert webinar to discover essential safety control measures and best practices for engineering a truly safe and compliant industrial environment.
June 25, 2025
An innovative aircraft with electric drives combines the best of both worlds. The cross between drone and helicopter could mean significantly faster and more efficient air emergency...
June 25, 2025
Effective when other materials fail, ceramics are particularly suitable for applications requiring wear and chemical resistance, sliding characteristics or biocompatibility. Discover...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!