Hermeus

Developer of reusable high-speed and hypersonic aircraft and drones for defense missions, using a hybrid turbine–ramjet engine to reach extreme Mach speeds.

Hermeus develops reusable high-speed and hypersonic aircraft and drones for defense and national security operations. The company focuses on rapid design, build, and test cycles to field operational high-Mach platforms. Its Quarterhorse prototypes validate systems for future hypersonic aircraft, while the planned Darkhorse vehicle supports multi-mission defense roles. A hybrid turbine–ramjet engine enables takeoff, supersonic flight, and acceleration to hypersonic speeds in a single propulsion system.