Prometheus (rocket engine)
The engine is aimed to be reusable with substantially lower costs than traditional engines manufactured in Europe. The cost goal is to manufacture the Prometheus engine at one-tenth the cost of the Ariane 5's first-stage engine.
This engine is to cost no more than 1 million euros.
- Some parts will be made by 3d printing.
- It will have a thrust of 100 tons.
- Combustion chamber pressure will be approximately 110 bar (11,000 kPa).
- Specific impulse will be 360 seconds.
- The engine is made to be reusable 3 to 5 times.
Patrick Bonguet, who leads the Ariane 6 launch vehicle program at ArianeSpace, indicated in June 2017 that it is possible the Prometheus engine could find a use on a future version of the expendable Ariane 6 launcher. In this scenario, a "streamlined version of Vulcain rocket engine called Vulcain 2.1 would have the same performance at Vulcain 2. The expendable Ariane 6 is expected to make an initial launch in 2020.
- Henry, Caleb (5 October 2017). "France's Prometheus reusable engine becomes ESA project, gets funding boost". SpaceNews. Retrieved 9 January 2018.
- Henry, Caleb (8 January 2018). "France, Germany studying reusability with a subscale flyback booster". SpaceNews. Retrieved 9 January 2018.
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