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True, but Delta IV is the only one of those rockets using hydrolox for the first stage. I have to imagine storing and moving that much hydrogen is a lot more co
by ericbarrett 4y ago
True, but Delta IV is the only one of those rockets using hydrolox for the first stage. I have to imagine storing and moving that much hydrogen is a lot more complex than launch vehicles that only use it in an upper stage.
- numpad0 4y agoI don't quite get the argument. If SLS and rest of those rockets belong to a same category, and reliability in the same level as well, what's the point of pointing that out...besides I believe Delta IV Heavy is towards the side of more reliable and regular launching rockets