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by metal_am
844 days ago
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I’ll bite. The capability in the US to do large castings and forgings is basically gone. Good luck getting anything with a lead time of less than a couple years. In some cases, it simply can’t be done. That’s why we’re seeing so much investment into large scale additive manufacturing. It’s interesting how this has become such a problem again. Post WW2, the US dismantled massive, basically building size hydraulic presses in former Nazi Germany and shipped them back to the US because that was a capability we didn’t have. |
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This is true but irrelevant to space flight. We don’t fly big cast or forged parts.
Saturn V contained aluminium cast parts, but nothing we can’t make today [1]. (To my knowledge, no components were built in our WWII-era forges.) Modern carbon composites and aluminium alloys are superior, and we’re in the process of surpassing the Saturn V’s capabilities in SpaceX’s Starship.
[1] https://evergreene.com/pdf/evergreene_saturn-v-rocket.pdf