> 6-10 years from now Ariane Next/SALTO will aims replicate Falcon 9 efficiency and the design will be very similar: reusable, RP-1/LOX, Prometheus engine is similar reusable open cycle engine as Merlin with lots of 3D printed parts.
1. Ariane Next will use a Methalox first stage and a Hydrolox 2nd stage[1], not Kerolox (RP-1).
2. Given how long it took to get Ariane 6 to the launch pad, and its similarities to Ariane 5, 6-10 year is very optimistic.
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1. From what I understand, this is due to political wrangling. Germany wanted to make the engines for the 2nd stage. IMO SpaceX's approach of using the same engine everywhere is superior.
1. Ariane Next will use a Methalox first stage and a Hydrolox 2nd stage[1], not Kerolox (RP-1).
2. Given how long it took to get Ariane 6 to the launch pad, and its similarities to Ariane 5, 6-10 year is very optimistic.
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1. From what I understand, this is due to political wrangling. Germany wanted to make the engines for the 2nd stage. IMO SpaceX's approach of using the same engine everywhere is superior.