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

Maxwell Engine Blocks and Rocket

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.

PlasmaWorks and Maxwell in Space

RECENT NEWS

Read more about us and updates in the news.

Exclusive: Phase Four Inks Deal to Scale Production
El Segundo-based Phase Four today finalized a lease to build a second factory and scale production of its Maxwell engine product line. The new Hawthorne facility will be over 3X larger than Phase Four’s current plant, and capable of cranking out 100 engines a year.
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Opinion: Make The U.S. Electric Propulsion Supply Chain More Secure
For most of the last decade, the U.S. relied almost entirely on Russia for rocket engines and crewed launches into space.
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Phase Four Hires Former SpaceX Attorney Margaret Abernathy as General Counsel
Phase Four expands its leadership team to support the company’s rapid growth in both the commercial and government markets.
Read More

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!