Building the Next Generation of

In-Space Mobility

10

Maxwell Systems Delivered

6

Maxwell systems on-orbit today

20+

Systems produced by Q2 2022

PHASEFOUR

ABOUT US

Phase Four is a disruptive provider of next generation electric propulsion (EP) solutions for small satellites. Phase Four’s RF Thruster represents a revolutionary new architecture that realizes lower cost, mass-manufacturability, miniaturized power electronics, and propellant agnosticism over incumbent technologies, without compromising performance. In 2021 Phase Four’s Maxwell turn-key propulsion system achieved flight heritage and is now being regularly utilized by satellite operators.

PRODUCTS

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PlasmaWorks

At Phase Four we are constantly pushing the envelope of RF plasma propulsion. We have active R&D in plasma physics of RF thrusters, advanced propellants, and new applications of plasma propulsion in space.

Maxwell

Maxwell is a high performance turn-key plasma propulsion system that leverages miniaturized RF electronics and our electrodeless thruster in a compact form factor.

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RECENT NEWS

Read more about us and updates in the news.

Phase Four and Orbit Fab to work on Maxwell engine refueling
Propulsion startup Phase Four has signed a memorandum of understanding with satellite refueling startup Orbit Fab aimed at preparing future Phase Four Maxwell engines for on-orbit refueling.
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2021 by the Numbers & a Sneak Preview of 2022
2021 has been by far the most significant year in the history of Phase Four
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PhaseFour Debuts Improved Thruster
Satellite electric propulsion company Phase Four has completed testing of a new thruster that it says offers significantly improved performance
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CONTACT

We'd love to learn more from you. Please use the contact form to the right to get in touch with us, or a specific team, and we will get back to you as soon as we can!