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A comment on SpaceX rolls Inspiration4 Falcon 9 rocket to the pad for historic launch. Parent comment

Re:SpaceX rolls Inspiration4 Falcon 9 rocket to the pad for ... by wlesieutre on Tuesday September 07, 2021 @10:37AM (#28445408)
Both are the "Falcon 9 Block 5" version. Earlier in the Falcon 9's history they were constantly iterating on the design, but NASA's certification for human spaceflight required them to make seven flights on the same design.

So it's both a proven design, and they're reusing one that has flown before. But not the most heavily reused one.

https://en.wikipedia.org/wiki/Falcon_9_Block_5

https://en.wikipedia.org/wiki/List_of_Falcon_9_first-stage_b...

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Re:SpaceX rolls Inspiration4 Falcon 9 rocket to the pad for ... by sebazzz on Tuesday September 07, 2021 @10:52AM (#28445591)
Note that even within Falcon 9 Block 5 there are changes to make reusability easier and cheaper. The earlier Block 5 are not as easy to reuse as later Block 5. ("Pain in the ass" as mentioned in Elon in the conversation with Tim Dodd[0])

[0]: https://everydayastronaut.com/starbase-tour-and-interview-wi...

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