Click the original article link here >>> Pulsed Plasma Rocket

Howe Industries is investigating a Pulsed Plasma Rocket system that can produce 20,000 lbs of thrust with an Isp of 5,000 seconds. The Pulsed Plasma Rocket (PPR) is smaller, less complex, and more affordable. They fire a 2 kilogram bullet down a barrel where it gets converted into plasma and generates the thrust.

nextbigfuture.com