NASA Tests New Refuel Device for Future In-Space Refueling Missions

To view this video please enable Java Script, and consider upgrading to a web browser that supports HTML5 video Engineers from NASA’s Marshall Space Flight Center in Huntsville, Alabama, and L3Harris con-duct operational testing on a developmental cryocoupler, a vital technology for future in-orbit spacecraft refueling.NASA/Tyson Eason For NASA’s next generation of deep space exploration missions, spacecraft may need to refuel in Earth orbit before pushing farther into the solar system. Similar to how a gas pump needs a nozzle to fit your fuel tank, future spacecraft could require a special device in order to fill up prior to departure, known as a cryocoupler. Cryocouplers would allow spacecraft to connect to future orbital propellant depots, which would serve as the gas stations of space. The technology comes with the challenge of reliably transferring cryogenic, or super-cold, fluids without losing propellant or performance. Cryogenic propellants like liquid hydrogen and liquid oxygen must stay chilled to hundreds of degrees below zero Fahrenheit, placing strict demands on the materials, seals, and mechanisms that move them. “In-orbit cryogenic refueling between two spacecraft has yet to be done and remains one of the toughest engineering challenges in spaceflight,” said Travis Belcher, cryocoupler project manager at NASA’s Marshall Space Flight Center in Huntsville, Alabama. “These propellant transfers are essential for the kinds of missions NASA wants to fly in the future, so developing a coupler that can handle ultra-cold propellants is a critical step toward making that capability real.” Ground-based couplers like those used to fill the SLS (Space Launch System) for Artemis missions are not an option for orbiting propellant transfers. Those couplers release quickly while a rocket is launching and must be manually reconnected for the next flight. They also are not designed to operate in the harsh environment of space and are much larger than what would be used to