A new propulsion system combines the power and speed of conventional chemical thrusters with the precision and fuel-efficiency of electrical thrusters. The system could enable small satellites capable of both fast, powerful maneuvers and slower, precise adjustments.

…The key to the new system is a special propellant that can power both chemical and electrical thrusters…

…a type of “green monopropellant” originally developed by the U.S. Air Force for use in chemical propulsion in space can also effectively power tiny “electrospray” thrusters. Electrospray thrusters are dime-sized rockets that use electric fields to charge up a liquid propellant’s particles, which are then shot into space as a thrust-generating spray…