A small team of engineers from Airbus Safran Launchers and the French space agency CNES have poured a few million euros since 2015 into a liquid oxygen and-methane-fueled reusable engine dubbed Prometheus. ESA leaders agreed during December’s ministerial conference in Lucerne, Switzerland, to make Prometheus part of the agency’s Future Launchers Preparatory Program, or FLPP.
In an interview with SpaceNews, Airbus Safran Launchers CEO Alain Charmeau said FLPP is allocating 85 million euros ($91 million) to Prometheus to fund research and development leading to a 2020 test firing. Now that Prometheus is an ESA program, Charmeau expects more countries will get involved….
The target price for a Prometheus engine is 1 million euros, one-tenth the cost of the Ariane 6’s liquid-oxygen and liquid-hydrogen Vulcain 2.1 engine. The Prometheus program is making extensive use of new technologies and production methods, including 3-D printing, and a large amount of technical design work already completed in France and Germany, according to an Airbus Safran Launchers presentation.
Charmeau said the market dynamics that have dissuaded the company from reusability in the past are still the same, but the company wants to lay the foundation for long-term launcher development.
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