Changing the Way We Move in Space

Changing the Way We Move in Space

ABOUT PHASE FOUR

Phase Four is a disruptive provider of next generation electric propulsion (EP) solutions for 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.

Phase Four Partners with Redwire to Expand Space Propulsion Offerings and Deliver Hall Effect Thrusters

Redwire and Phase Four will design and develop a reliable and efficient Hall Effect Thruster (HET), called the Valkyrie Thruster, based on an existing design. The highly flexible and streamlined design will yield a shorter production schedule enabling reliable, high-volume production.

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PRODUCTS

Valkyrie Thruster

Valkyrie is a next generation Hall Effect Thruster designed to deliver a high performance solution to proliferated satellite constellations. Developed in partnership with Phase Four, the Valkyrie thruster is anticipated to go into full-rate production in 2025.

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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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Maxwell Systems Delivered

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Maxwell Systems launched into low Earth orbit

WE'VE MOVED

Phase Four is moving into a new facility located at: 12605 S Van Ness Ave, Hawthorne CA

We've Moved

RECENT NEWS

Read more about us and updates in the news.

Phase Four Partners with Redwire to Expand Space Propulsion Offerings and Deliver Hall Effect Thrusters
Based on the NASA-designed and tested H71M Hall Effect Thruster, the two companies will manufacture a family of propulsion systems spanning a range of input power and propellants.
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Phase Four Accelerates Mission with Announcement of Distinguished Board of Advisors
Phase Four, a leading provider of next generation electric propulsion (EP) solutions for satellites, proudly announces its distinguished Board of Advisors. Comprised of esteemed former government space leaders and industry visionaries, the Board will play a pivotal role in informing Phase Four's strategic direction and advancing its mission of revolutionizing in-space propulsion technology.
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DARPA Awards Phase Four $14.9M Contract to Develop Air Breathing Electric Propulsion for Very Low Earth Orbit Operations
Phase Four, a leading provider of next generation electric propulsion (EP) solutions for satellites, was awarded a $14.9M contract by the Defense Advanced Research Projects Agency (DARPA) to deliver an "air-breathing" EP system to enable extended satellite operations in Very Low Earth Orbit (VLEO), at altitudes as low as 90-450km.
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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!