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Re:The SpaceX Starship is a big deal by brunoTbear on Wednesday October 30, 2019 @12:00PM (#21399130)
Don't forget the impact of hydrogen on metals: turn everything brittle. For a company founded on reusable componentry, Hyrdogen in your turbopumps, fuel chambers, combustion chambers etc. is kind of a deal breaker.
Re:The SpaceX Starship is a big deal by avmich on Wednesday October 30, 2019 @12:28PM (#21399488)
Interesting that RL-10 descendants are quite reusable. Guess they solved the embrittlement problem :) .
Re:The SpaceX Starship is a big deal by black6 on Wednesday October 30, 2019 @01:15PM (#21400057)
The SSME (now the RS-25 engine) seems to handle the H2 just fine.
Re:The SpaceX Starship is a big deal by DennisP on Wednesday October 30, 2019 @01:29PM (#21400222)
They only flew each Shuttle an average of 34 times, with months of refurbishing between flights. SpaceX wants to fly each engine hundreds or even thousands of times, with turnaround less than a day.