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Phase Four's propulsion products are suitable for small satellites weighing less than 50 kilograms and larger classes for communications mega-constellations.
The first flight demonstration of Phase Four's thruster is scheduled for later this year on an Astro Digital cubesat.
NASA plans to test one of Phase Four's thrusters in space.
Phase Four has conducted flight qualification and testing common among traditional aerospace systems despite its technology not having flown yet.
Laura Overly was hired as Phase Four's supply chain and materials director in June.
Beau Jarvis joined Phase Four in September as the chief revenue officer.
Phase Four is developing and testing electric thrusters for in-space transportation using radio frequency waves to generate plasma.
Phase Four aims to scale up the production of its electric propulsion system to meet the demands of mass-manufactured satellites.
Phase Four is a company based in El Segundo, California developing an advanced electric propulsion system for cubesats and larger spacecraft.
Phase Four announced sales of its thrusters to NASA and Astro Digital on 2018-05-24.
Astro Digital will offer Phase Four thrusters on satellites it manufactures for other companies.
NASA purchased one of Phase Four’s electric radio frequency thrusters for testing and the thruster will be delivered in 2019.