The National Aeronautics and Space Administration (NASA), in collaboration with industry partners, is advancing critical capabilities for future deep space exploration with an upcoming in-orbit technology demonstration. Named the Liquid Oxygen Flight Demonstration, or LOXSAT, this mission aims to test cryogenic fluid management technologies essential for establishing in-space propellant depots – effectively, gas stations in orbit – that could sustain long-duration journeys to destinations like the Moon and Mars.

Developed by Eta Space of Rockledge, Florida, as part of a NASA Tipping Point initiative, the LOXSAT payload is designed to evaluate 11 distinct cryogenic fluid management technologies. Rocket Lab is providing both the spacecraft and launch services for the mission, which involves integrating the LOXSAT payload with a Rocket Lab Photon satellite bus. The launch is scheduled to take place aboard Rocket Lab’s Electron rocket from Launch Complex 1 on New Zealand’s Mahia Peninsula, with the earliest launch window set for July 17. The demonstration mission is planned for a duration of nine months.

The technologies slated for testing on LOXSAT directly address the significant challenges associated with handling super-cold, or cryogenic, propellants in the microgravity environment of space. Key areas of focus include minimizing propellant boiloff, efficiently transferring fuel between tanks, maintaining optimal tank pressure, and accurately gauging propellant levels. The data gathered from these experiments will be instrumental in the development of future in-space refueling stations, enabling spacecraft to replenish their fuel supplies en route to distant celestial bodies.

This ambitious project is overseen by NASA’s Cryogenic Fluid Management Portfolio Project, drawing expertise from teams at Marshall Space Flight Center in Alabama, Glenn Research Center in Ohio, and Kennedy Space Center in Florida. Their work is a vital component of NASA’s broader Space Technology Mission Directorate, which encompasses over 20 individual technology development activities aimed at pushing the boundaries of space exploration.