A 2.4 meter diameter propellant tank made of composite materials successfully completed pressurized testing at NASA¹s Marshall Space Flight Center in Huntsville, Ala. The goal of this game changing effort is to provide a substantial weight and cost savings, not just a one percent or a five percent changes, but up to a 30 percent weight savings and a 25 percent cost savings over state-of-the-art metallic tanks. Independently, these savings are compelling, but together, they are game changing and will enable future missions to reach new destinations. The 2.4 meter tank is a major element of the Composite Cryotank Technologies Demonstration Project‹ a technology that is one of the top nine projects funded by NASA¹s Space Technology Mission Directorate, which is innovating, developing, testing and flying hardware for use in NASA's future missions.