ArianeGroup's 5 kN GRETA completes hot‑fire campaign as ESA funds next development phase
ArianeGroup completed a hot‑fire test campaign of its 5 kN GRETA rocket engine at Trauen, demonstrating stable operation, controlled shutdowns and multiple restarts. ESA has awarded a follow‑on contract to advance the hydrogen‑peroxide/ethanol engine for landers and Ariane 6 kick stages.