Portal Space Systems, founded in 2021 and based in Seattle, is a space startup focused on revolutionizing in-space maneuverability. They are developing the Supernova satellite bus, a payload-agnostic platform powered by a novel solar-thermal propulsion system designed for rapid orbital transfers. With funding from the Department of Defense and Space Force, Portal aims to provide tactical responsiveness and dynamic space operations capabilities. Their primary customer is the U.S. government, specifically the Space Force. Key words: satellite bus, solar-thermal propulsion, in-space mobility, space tug, maneuverability.
All verified mentions of this organization in source documents.
Portal Space Systems has self-funded the research and development for its thrusters and solar thermal propulsion system.
Portal Space Systems received more than $3,000,000 in funding from the Department of Defense and the United States Space Force to support development and launch of the Supernova satellite bus.
Portal Space Systems received separate, undisclosed private investment to support development of the Supernova spacecraft bus.
Portal Space Systems characterizes Supernova as a spacecraft bus that also serves roles similar to a tug, including refueling and space situational awareness.
Portal Space Systems developed its solar thermal approach building on NASA and U.S. Air Force work from the 1990s and early 2000s and incorporating additively manufactured components using new alloys.
Portal Space Systems exited stealth mode on 2024-04-30 and secured more than $3,000,000 in awards from the U.S. Department of Defense.