247. NASA’s Electric Thruster That Could Take Us to Mars
The hosts discuss NASA’s recent breakthrough in Magnetoplasmadynamic (MPD) electric propulsion, developed by NASA JPL, NASA Glenn, and Princeton University, which uses vaporized lithium to generate high thrust. They explain how this technology, operating at 120 kilowatts with a goal of 500 kilowatts to 1 megawatt, offers a 'happy medium' between fuel-heavy chemical rockets and low-thrust ion drives, potentially enabling faster human missions to Mars. The episode also covers a sponsor segment on hydrogen fuel cells for vertical takeoff and landing (VTOL) drones, contrasting their energy density with battery limitations.