Quantum Space Acquires Phase Four’s Multi-Mode Propulsion Assets to Boost Space Mobility

Acquisition Adds Los Angeles Facility, Enhancing Ranger Spacecraft Agility for National Security, Civil Science, and Commercial Missions.

Quantum Space, dedicated to transforming critical national defense and space infrastructure missions via its highly maneuverable Ranger spacecraft, announced today the acquisition of Phase Four’s multi-mode propulsion assets, a breakthrough technology that allows a single system to operate in both chemical (high thrust) and electric (high efficiency) modes. This strategic acquisition, which also includes a state-of-the-art integration and test facility in Los Angeles, strengthens Quantum Space’s ability to deliver highly maneuverable, persistent, and cost-efficient platforms for its national security, civil, and commercial customers, enabling missions from low-Earth orbit (LEO) to geostationary orbit (GEO) and cislunar space.

“Acquiring Phase Four’s multi-mode propulsion assets marks a major inflection point for Quantum Space,” said Kerry Wisnosky, CEO of Quantum Space. “It gives us the agility, resilience, and efficiency required to serve the most demanding national security missions, support civil science objectives, and meet commercial customers where they are headed. Mission areas such as Golden Dome, maneuverable GEO, and life extension, all will benefit—this is about providing unmatched space mobility.”

Phase Four’s multi-mode capability expands Rangers rapid maneuvering for responsive missions with efficient station-keeping and phasing and simplifies refueling by using a single propellant. This added agility supports faster response times, more versatile mission profiles, and longer-duration presence in orbit, capabilities that are increasingly critical for defense, scientific exploration, and commercial infrastructure.

The newly acquired Los Angeles facility positions Quantum Space in a central hub of the nation’s space industrial base - just minutes from Space Systems Command. This cutting-edge facility includes a large high-bay integration area, advanced environmental test chambers, machine shops, clean room, and a mission development laboratory. This will accelerate the rapid development and expansion of Quantum Space’s propulsion technologies and Ranger fleet.

“PhaseFour has always set out to deliver propulsion systems that bridge the gap between traditional chemical performance and electric efficiency with our innovative radio frequency propulsion technology,” said Steve Kiser, CEO of Phase Four. “Partnering with Quantum Space ensures that this technology scales and finds its way into the missions that matter most—defense, science, commercial infrastructure. I’m proud of what the Phase Four team built, and Quantum Space is the right partner to get the multi-mode capability on orbit.”

Quantum Space's new capabilities further position the company to help customers stay ahead of emerging threats, support critical civil science initiatives, and deliver resilient, next-generation space services as market demand for persistent presence grows.

About Quantum Space:

Quantum Space builds agile spacecraft to strengthen U.S. space defense and meet the demands of modern space operations. Our mission centers on the Ranger platform: a highly maneuverable spacecraft designed to address the needs of national security and commercial operators. With patented propulsion, extended on-orbit endurance, and modular flexibility, Ranger is engineered to outmaneuver legacy satellites and operate dynamically across diverse mission sets. For more information, visit: www.quantumspace.us

About Phase Four:

Phase Four is a disruptive provider of next generation in-space electric propulsion solutions. The company was founded in 2015 to address the demands of the rapid proliferation of satellite constellations and to accelerate the advancement of its radio-frequency thruster.  It's innovation in-space propulsion systems enable next generation space platforms and missions. Learn more at  www.phasefour.io. 
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CONTACTS:
Ben Reed
Quantum Space
media@quantumspace.us