Greta Rocket Engine Completes First Test Campaign for ESA's Future Launchers
The Greta rocket engine, part of ESA's Future Launchers Preparatory Programme, successfully completed its first test campaign. This 5 kN thrust class engine, designed for lunar landers and stages like Ariane 6's Astris, uses hydrogen peroxide and ethanol as propellants. The engine was tested multiple times from July to November 2025, demonstrating stable operations and continuous firings for over 40 seconds.
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The Greta rocket engine has completed its first test campaign, achieving multiple ignitions between July and November 2025. This 5 kN thrust class engine, developed under the European Space Agency's Future Launchers Preparatory Programme, can be utilized for lunar landers and larger kick stages such as the Ariane 6 add-on Astris.
Utilizing hydrogen peroxide and ethanol as propellants, Greta presents a sustainable alternative to traditional monomethyl hydrazine engines. The tests confirmed stable operations, including controlled shutdowns, with continuous firings lasting over 40 seconds.
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