NASA’s RASSOR (Regolith Advanced Surface Systems Operations Robot) manipulates a simulant of regolith – the fragmental material found on the Moon’s surface – during a site preparation test inside of the Granular Mechanics and Regolith Operations Lab at the agency’s Kennedy Space Center in Florida on May 27. Ben Burdess, mechanical engineer at NASA Kennedy, observes RASSOR’s counterrotating drums digging up the lunar dust and creating a three-foot berm.
The opposing motion of the drums helps RASSOR grip the surface in low-gravity environments like the Moon or Mars. With this unique capability, RASSOR can traverse the rough surface to dig, load, haul, and dump regolith that could be used in construction or broken down into hydrogen, oxygen, or water, resources critical for sustaining human presence.
The primary test objective was to prove the ability of a bucket drum excavator to build surface features out of regolith. Bucket drums will be used on NASA’s IPEx (In-Situ Resource Utilization Pilot Excavator). The RASSOR robot represents an earlier generation technology that informed the development of IPEx, serving as a precursor and foundational platform for the advanced excavation systems and autonomous capabilities now being demonstrated by this Moon-mining robot.
Image credit: NASA/Frank Michaux