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Phase Four

US
commercialFounded 2015
Hawthorne, California, United States
www.phasefour.io/
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0.0-5.0

All verified mentions of this organization in source documents.

Phase Four’s Maxwell Block 1 engine gained flight heritage in 2021 and is currently operating on several commercial small satellites.

CapabilityGeneralValue 3.4Feb 17, 2022Phase Four Wins DARPA Contract

Phase Four’s RF Thruster is propellant agnostic and is designed to operate with novel propellants.

CapabilityValue 3.5Feb 17, 2022Phase Four Wins DARPA Contract

Phase Four's Maxwell Block 1 engine gained flight heritage in 2021 and is currently operating on several commercial small satellites.

CapabilityGeneralValue 3.8Feb 16, 2022Phase Four Awarded Novel Thruster Prototype Development Contract by DARPA

The DARPA contract involving Phase Four was announced on 2022-02-16.

RelationshipsValue 4.0Feb 16, 2022Phase Four wins DARPA contract to test novel propellant

Phase Four plans to begin delivering its second-generation thrusters, Maxwell Block 2, in June.

PlanCapabilityValue 3.8Feb 16, 2022Phase Four wins DARPA contract to test novel propellant

Phase Four plans to begin delivering its second-generation thrusters to customers later in 2025.

PlanCapabilityValue 3.8Jan 24, 2022Phase Four and Orbit Fab to work on Maxwell engine refueling

Phase Four will work with Orbit Fab to evaluate the refueling potential of traditional electric propulsion propellants such as xenon for Maxwell engines.

RelationshipsCapabilityValue 4.0Jan 24, 2022Phase Four and Orbit Fab to work on Maxwell engine refueling

The agreement between Phase Four and Orbit Fab was announced on 2022-01-24.

RelationshipsValue 4.0Jan 24, 2022Phase Four and Orbit Fab to work on Maxwell engine refueling

Phase Four modified the Maxwell thruster operating frequency, propellant flow rates, and other engineering constraints to achieve the Block 2 performance improvements.

CapabilityValue 4.0Dec 6, 2021Phase Four debuts improved thruster

Phase Four spent the last two years developing the original Block 1 thruster and building up a production line for them.

CapabilityPlanGrowthValue 3.2Dec 6, 2021Phase Four debuts improved thruster

Phase Four’s original Block 1 Maxwell thruster has flight experience on several spacecraft, including those operated by Capella.

CapabilityRelationshipsValue 3.0Dec 6, 2021Phase Four debuts improved thruster

Phase Four won a contract on 2021-08-18 at the U.S. Space Force’s first SpaceWERX Pitch Day to fuel its Maxwell engine with the green propellant ASCENT developed by the U.S. Air Force Research Laboratory.

RelationshipsPlanCapabilityValue 4.5Aug 25, 2021Phase Four Maxwell to test green propellant

Phase Four seeks to produce a Maxwell engine that offers both the high-thrust capabilities of chemical propulsion and the high-efficiency capabilities of electric propulsion.

CapabilityGeneralValue 3.5Aug 25, 2021Phase Four Maxwell to test green propellant

Phase Four is partnering with the U.S. Air Force Research Laboratory and working closely with NASA to advance iodine electric propulsion.

RelationshipsCapabilityValue 3.8Aug 25, 2021Phase Four Developing Iodine-Based RF Plasma Propulsion + Partners With AFRL

In 2021, Phase Four received a Phase II Small Business Innovation Research grant funded by AFWERX to develop the first electrodeless iodine plasma thruster in the United States.

CapabilityFinancialPlanValue 4.0Aug 25, 2021Phase Four Developing Iodine-Based RF Plasma Propulsion + Partners With AFRL

Phase Four has sent four Maxwell engines to space with Capella Space since 2021-01-24.

RelationshipsCapabilityValue 4.0Jul 1, 2021Phase Four sees fourth Maxwell engine launch with Capella Space SAR Satellite

Capella Space has developed a working relationship with Phase Four over the past two years.

RelationshipsValue 2.8Jul 1, 2021Phase Four sees fourth Maxwell engine launch with Capella Space SAR Satellite

Phase Four collaborated with Capella Space to develop, enhance, produce, launch, and operate its first Maxwell Block 1 propulsion systems.

RelationshipsCapabilityValue 4.0Jul 1, 2021Phase Four sees fourth Maxwell engine launch with Capella Space SAR Satellite

Two Capella satellites launched on the SpaceX Transporter-1 rideshare flight in January provided the first on-orbit evidence of Phase Four’s Maxwell technology.

CapabilityPlanValue 4.0Jun 30, 2021Capella Space and Phase Four reveal Maxwell Engine performance

Capella Space launched its fourth synthetic aperture radar satellite on 2021-06-30 on the SpaceX Transporter-2 rideshare flight carrying a Maxwell electric thruster manufactured by Phase Four.

PlanCapabilityRelationshipsValue 4.0Jun 30, 2021Capella Space and Phase Four reveal Maxwell Engine performance
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