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Apollo spacecraft premodulation processor teardown
- awelkjlek 4y ago[flagged]
- belter 4y ago
- kens 4y agoIf you prefer blog format to Twitter: https://www.righto.com/2022/05/talking-with-moon-inside-apollos.html https://www.righto.com/2022/05/talking-with-moon-inside-apol... Previous HN comments: https://news.ycombinator.com/item?id=31368713 https://news.ycombinator.com/item?id=31368713
- belter 4y agoMuch better. Thanks!
- dang 4y ago"Please don't complain about tangential annoyances—things like article or website formats, name collisions, or back-button breakage. They're too common to be interesting." https://news.ycombinator.com/newsguidelines.html https://news.ycombinator.com/newsguidelines.html
- belter 4y agoMissed that. Sorry.
- WalterGR 4y agoThis submission includes a comment by the author inviting questions: https://news.ycombinator.com/item?id=31368713 https://news.ycombinator.com/item?id=31368713 Talking with the Moon: Inside Apollo's premodulation processor (righto.com) 98 points by picture 2 days ago | 24 comments Edit: Strange. I made this comment yesterday. So that suggests this got reposted via the second-chance queue or whatever it's called.
- dang 4y agoYes, we put it in the second-chance pool without realizing there had already been a significant thread on the same story. Happens sometimes!
- marcodiego 4y agoWhy no PCB?
- kens 4y agoThey had printed circuit boards back then but point-to-point wiring was very popular.
- merlyn 4y agoEspecially to be hardened for space flight.
- sizzzzlerz 4y agoI think the fear was that subjecting a PCB to the vibrational stresses imposed during launch could possibly crack traces or solder joints. Even with P2P, they spotwelded where they could. Whatever the reasons, the equipment proved to be reliable. I don't think there was a single comms failure across the entire program.
- jandrese 4y agoWell there was the famous SCE->AUX comm failure, but that wasn't due to the construction of the modules.
- dang 4y agoRelated: Talking with the Moon: Inside Apollo's premodulation processor - https://news.ycombinator.com/item?id=31368713 https://news.ycombinator.com/item?id=31368713 - May 2022 (25 comments)