What Happened
French Startup Achieves Zero-Failure Test Campaign For Reusable Cryogenic Rocket Engine
AndroMach, a French startup, has successfully qualified its Banger cryogenic rocket engine through 21 consecutive hot-fire tests with zero failures, a critical milestone for the Envol hypersonic suborbital drone program. The engine, designed for reusability, accumulated seven minutes of cumulative burn time during the test campaign conducted at the DGA Essais de Missiles facility in December 2025. The Envol drone is intended for both civilian and military applications, including microgravity experiments and high-complexity maneuvering target testing. This development was first reported by Unknown Source.