The X-60A vehicle is an air-dropped liquid rocket specifically designed for #hypersonic flight research. The program has completed its Critical Design Review, a major milestone in the program. It will now move into the fabrication phase. @generationorbit https://t.co/80kAPFgsLt pic.twitter.com/CGJi54tHPF

— Air Force Research Lab - AFRL (@AFResearchLab) March 6, 2019