Hermeus Unveils Ramjet-X, a Low-Cost Test Vehicle for High-Mach Flight

Launched from its Quarterhorse aircraft, the expendable test vehicle is designed to make high-Mach airbreathing flight test cheaper, faster, and more repeatable. LOS ANGELES, Sept. 9, 2026 /PRNewswire/ -- Hermeus today announced it is developing Ramjet-X, a low-cost, expendable...