[HN Gopher] Restoring the Apollo Guidance Computer [video]
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Restoring the Apollo Guidance Computer [video]
Author : ruik
Score : 87 points
Date : 2023-07-08 20:42 UTC (1 days ago)
(HTM) web link (www.youtube.com)
(TXT) w3m dump (www.youtube.com)
| marcodiego wrote:
| Interesting: he says that the famous 1202 error may sometimes
| crash the spacecraft and sometimes land successful in some other
| cases. And also that it depends on many factors. So, the sane
| thing to do at that moment, AIUI, was to abort the landing.
|
| The Apollo 11 landing was not a tragedy be sheer luck. IIRC
| Armstrong asked ground control about 1202 and they tell him to
| ignore it. Ground controllers, probably unknowingly, bet
| Armstrong and Aldrin lives.
| wrs wrote:
| Not unknowingly at all. They had worked out the criteria for
| all the program alarms ahead of time. You can see their "cheat
| sheet" here: https://www.space.com/apollo-11-guidance-officer-
| remembers-m...
| devilbunny wrote:
| The video strongly implies that the conditions for 1201/1202
| alarms might, or might not, lead to a crash. The take in the
| video is that they got lucky both in sim and reality.
| MochaDen wrote:
| So cool I'm going to have to go play with the PDP-11/15 in my
| basement to get my old hardware jones on.
|
| This video of building a custom Apollo electroluminescent glass
| panel DSKY display is also fantastic!
| https://www.youtube.com/watch?v=Z2o_Sp2-aBo
| JKCalhoun wrote:
| Yeah, a lot of vintage stuff hitting the HN front page lately.
| I'm loving that.
| pomian wrote:
| I highly recommend the book, Sunburst and Luminary;
| http://www.sunburstandluminary.com/SLhome.html
|
| A technical pleasure and also very good glimpse into the Apollo
| team - working together, to land on the moon. It is a fun easy
| read, written by the fellow in charge of programming computer on
| the lunar lander. It is also a great snapshot of that time in
| history, the excitement of Apollo, and with the frustration of
| the Vietnam war going on, some protests, etc. Just a hint - the
| main programmer, was an English major, and his use of the right
| words, were a key factor in the success of of creating an
| efficient and effective computer language.
| pomian wrote:
| https://news.ycombinator.com/item?id=17740486
| pockybum522 wrote:
| Oh look, it's the best thing I've ever watched on youtube.
|
| Okay, that might be slight hyperbole, but it's solidly in my top
| ten. One of those where the video documentation has no flourish,
| and as such doesn't get in the way of how cool the actual project
| is.
|
| Excellent series. If anyone knows of anything even remotely
| similar, please send it my way.
| kanwisher wrote:
| super cool video, check it out
| ruik wrote:
| Please also check curious marc youtube channel where you will
| find almost all of mentioned adventures!
| kanwisher wrote:
| Thanks just watched his video on Japanese Relay computer.
| scrps wrote:
| Ken Sherriff (righto.com) who's chip teardowns are often
| posted on HN is also a frequent guest on curious marc's
| channel.
| shrx wrote:
| Ken Shirriff*
| scrps wrote:
| Thank you, I didn't even notice that. Too late for me to
| edit the post :(
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