Rocket scientist aims to relaunch propulsion technology
The time has come to jettison the traditional chemical rocket propulsion system and move to one powered by beamed microwaves, say a group of researchers.
For decades, even as rockets have gotten lighter and more powerful, the basic system for putting them in space hasn't changed. A combustion chamber is loaded with propellants, which are put through a chemical reaction, causing hot gases to accelerate and be ejected through a nozzle at very high velocity, which in turn, provides momentum to the rocket's engine.
But a team led by 25-year-old CalTech Ph.D. student Dmitriy Tseliakhovich thinks that … Read more