PIMPAMA, Australia, March 6, 2018 (Gilmour PR) – Meet G-70. This orbital-class rocket engine, developed by Gilmour Space Technologies (www.gspacetech.com), has successfully achieved 70,000 newtons (70 kilonewtons or 15,700 pounds-force) of thrust in what could be the world’s largest successful test fire of a single-port hybrid rocket engine.