The production lines are shut down and any custom tooling has had its materials reclaimed to make other things. The institutional knowledge, the little bits that never got written down in the blueprints or manufacturing instructions, it’s all gone. The people who worked on that rocket and its components are dead or have been working on something else for the last 50 years. How well would you remember some little tidbit of information that you last needed half a lifetime ago?
Because a lot of “Released Engineering Documents” were just engineering notebooks, and each vehicle was different, even the parts that were supposed to be the same. There was a lot of “repair” versus “rework” disposition, and a “Just make it work; it only needs to work once” culture.
Basically, because it was a race against the Russians, and the Russians were winning.
Because it is based on obsolete technology. You wouldn’t want to build a flight computer with hard-wired (as in literal wires) software, would you? A lot of it would also have to be reverse engineered, to the point where you might as well build a new vehicle.
why can’t we build them again? were the blueprints and knowledge lost? deliberately destroyed? genuine question
The production lines are shut down and any custom tooling has had its materials reclaimed to make other things. The institutional knowledge, the little bits that never got written down in the blueprints or manufacturing instructions, it’s all gone. The people who worked on that rocket and its components are dead or have been working on something else for the last 50 years. How well would you remember some little tidbit of information that you last needed half a lifetime ago?
Because tech evolved, we could do better now.
Because a lot of “Released Engineering Documents” were just engineering notebooks, and each vehicle was different, even the parts that were supposed to be the same. There was a lot of “repair” versus “rework” disposition, and a “Just make it work; it only needs to work once” culture.
Basically, because it was a race against the Russians, and the Russians were winning.
huh, impressive that we did a (relatively) slapdash job of it and still pulled it off. Thanks for clarifying.
It’s downright fucking nuts that it all worked and I’m astonished we didn’t leave any astronauts on the moon, and Apollo 13 crew made it back.
Apollo 13 is a helluva movie that really exposes how razor-thin everything was.
because they were insanely expensive
Because the nazis America brought in to build them are all dead.
https://slate.com/technology/2023/08/nasa-nazi-history-von-braun.html
Relevant xkcd https://xkcd.com/984/
Some say our attitude should be one of gratitude, like the widows and orphans of old London Town who owe their large pensions to Wernher von Braun.
"Once the rockets are up, who cares where they come down? That’s not my department, " says Wernher von Braun.
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Because it is based on obsolete technology. You wouldn’t want to build a flight computer with hard-wired (as in literal wires) software, would you? A lot of it would also have to be reverse engineered, to the point where you might as well build a new vehicle.
We can use an FPGA for that
The software was the thing that was in the wires, not I/O.
The wires would be replaced by FLASH memory.
Wouldn’t they use a MROM or something instead, because flash memory can be quite volatile in the extreme conditions?