Apollo spacecraft premodulation processor teardown • Hacker News Board

Re: Apollo spacecraft premodulation processor teardown

#11

Post by jandrese » Mon, May 16, 2022, 5:24 PM UTC

sizzzzlerz wrote: post #10

marcodiego wrote: post #7

Why no PCB?

I 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.

Well there was the famous SCE->AUX comm failure, but that wasn't due to the construction of the modules.

Re: Apollo spacecraft premodulation processor teardown

#12

Post by dang » Mon, May 16, 2022, 6:25 PM UTC

belter wrote: post #3

Quoted post unavailable.

"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

Re: Apollo spacecraft premodulation processor teardown

#13

Post by dang » Mon, May 16, 2022, 6:26 PM UTC

Re: Apollo spacecraft premodulation processor teardown

#14

Post by dang » Mon, May 16, 2022, 6:27 PM UTC

WalterGR wrote: post #6

This submission includes a comment by the author inviting questions: 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.

Yes, we put it in the second-chance pool without realizing there had already been a significant thread on the same story. Happens sometimes!

Re: Apollo spacecraft premodulation processor teardown

#15

Post by belter » Tue, May 17, 2022, 9:13 AM UTC

dang wrote: post #12

belter wrote: post #3

Quoted post unavailable.

" 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

Missed that. Sorry.