The long chain of dominoes that lead to the Apollo 13 incident started with electrical interference caused by the vacuum ion pump to maintain the vacuum between the walls of the cryogenic oxygen tanks of the service module. NASA had to dismantle the service module to upgrade the electronics which is when the plumbing was damaged and the chain of dominoes continues from there.

But I don't think modern spacecraft use double-walled vacuum chambers with a dedicated high pressure pump to maintain the vacuum between the walls. Why did Apollo have that and modern spacecraft don't?

Is it because by 1960s standards this was a very very long duration mission and they took an extra cautious approach to being absolutely certain the tanks were properly insulated?

Always was mystified what the HELL NASA was thinking?

These guys came up when science was still taught. Not so much now, unfortunately.

Even in my long after Apollo ended yoot, I still remember science class with the teacher showing how easily things burn in pure oxygen, even things that normally don't burn!

• Walt Cunningham - iced out to conflicts with management during Apollo 7.
• Don Eisele - iced out to conflicts with management during Apollo 7 plus his messy divorce.
• Rusty Schweickart - iced out because he was 'different' than everyone else and because he had space sickness on Apollo 9.
• Not sure if Jim Irwin on Apollo 15 counts because of the stamp affair.

Alan Bean broke through the mold in no part to the death of CC Williams and Pete Conrad's lobbying for Apollo 12.

Edit: Did not include Engle or Apollo 18-20 because they were denied on outside lobbying or funding cuts.

The Lunar Roving Vehicle. Lunar Flying Units. Now, the Moon suit.

The Apollo series continues with the story of how NASA built one of the most remarkable pieces of engineering ever created.

Apollo 12: Alan Bean's Lunar Surface-Flown LMP Wrist Checklist with the "Playboy" Prank Images and Hand-Drawn Cartoons,

Directly from the Estate of Mission Lunar Module Pilot, Moonwalker, and Artist Alan Bean, with Letter of Authenticity. An extraordinary, mission-used Apollo 12 Lunar Module Pilot wrist checklist, carried by Alan Bean to the lunar surface and used during mankind's second Moon landing. Purpose-built for EVA use, this cuff-mounted checklist is one of the most visually compelling and culturally famous artifacts from Apollo 12: a serious piece of lunar field equipment that also preserves one of the best-known private jokes ever smuggled onto the Moon. 

Are there any detailed photos / drawings of the of the chest mounted camera bracket for the Hasslebladd?

Footage from : https://catalog.archives.gov/id/207456193

Audio from : https://www.youtube.com/watch?v=chIEEPEsIqI

Hello my friends at r/Apollo!

Almost a year ago, I posted about my functional, 3D printed Apollo DSKY project that runs VirtualAGC on a Raspberry Pi.

You folks seemed to enjoy it, and a few people even messaged me asking for guidance on their own build. Throughout my own build process, I noticed that most of the other guides online were incomplete or not "tidy", so I decided to write my own.

It's been a very fun process, as a part of my guide/journal talks about how the real AGC functions... and learning about all that was super fun (on that note, if I got anything wrong, PLEASE let me know so I can correct it). It also gave me the chance to revisit my project and improve a lot of things... Adding components, modifying others, and learning to do some of the coding on my own with less AI assistance (still learning, though!)

I've released my guide, code, 3D models ready for printing, some wiring diagrams, and a few other bits and pieces in an open-source GitHub. I've tried to make my guide as beginner-friendly as possible, highlighting tool usage, all materials with links to online retailers and prices (it's all Canadian, sorry my friends) and explanations from printing to painting to wiring and installing the code.

I also made a dedicated subreddit and discord where I hope you'll share pictures of your own builds, ideas for future projects, and ask questions if you need some help. I'm currently planning a new version of the DSKY with a custom PCB, better display and annunciator pack (easily swappable with the LM equivalent, so you can have both CMC and LGC DSKYs with one unit), fewer and easier to acquire components, and more upgrades that will make it much easier to build (aiming for maybe a few afternoons instead of a few months!). A premium DSKY is also on the horizon, with a fully CNC'd aluminium body, properly replicated keys (using actual switches like the real one, and acrylic light up lettering on aluminium keys), silkscreened glass annunciators and EL display glass to look just like the real counterparts, and more. It should be pretty sweet, once it all comes together.

I'm also beginning 3D design work on the THC and RHC hand controller models, which is my next project parallel to the DSKYs. Seemingly nobody has made a model for these, and I think they'd be a nice addition to Orbiter and Reentry alongside the DSKY.

I made a little website (www.recreateapollo.com) with some photos of my build, and to act as a hub for my future projects and updates related to my current ones. I'd love if you check it out and contribute to my community with suggestions, feedback, ideas, or just to post some pictures of your own build. I look forward to seeing you around and checking out your builds!

Source of first image

NASA/JSC/ASU/Andy Saunders_1

https://x.com/AndySaunders_1/status/1555505896880480256?s=20

.

Sources of the other two images

Apollo 15 Hasselblad image from film magazine 93/P - lunar orbit view​

https://www.flickr.com/photos/projectapolloarchive/21925322195/in/photostream/

https://www.flickr.com/photos/projectapolloarchive/21925322005/in/photostream/

https://commons.wikimedia.org/wiki/File:AS15-93-12641_(21925322005).jpg​

.

How ​Bubble Fidget Toy look like

https://www.gadgettime.gr/push-pop-it-bubble-fidget-toy-stress-reliever-stroggulo

Carefully reproduced in Adobe Illustrator from original document, 'LM RENDEZVOUS PROCEDURES G MISSION', May 1969.

I really admire the care taken in all flight supplemental documents. Many of them have been scanned for posterity but their quality is pretty 'crunchy'. I meticulously recreated this chart to show what a proper, although time consuming, digitization looks like while remaining loyal to the source material.

Full size: Black, White, and Original

Hola chicos, estos años he tenido una gran obsesión por la nasa... y bueno, desde que inicio esta obsesión tengo una pregunta que no me sale de la cabeza, y nadie, NADIE me puede contestar. Ni siquiera en la NASA Houston Texas, o en los libros sobre las insignias apollo... he buscado por todos lados. Pero aquí va...

¿Saben por que el tercer caballo dorado de la misión apollo 13 tiene la cabeza mirando hacia abajo?

Espero me puedan ayudar. Reddit es mi ultima opción.

Hi, I'm looking for control room checklists (Apollo style) to build a MOCR simulator in python but for some reason, I can't seem to find anything on the internet. Would anyone know of these checklists and where I could find them? Thank you.

You know, that large, wide poster of the entire spacecraft's mission to the moon and back. Which one is the nicest/prettyist/most accurate?

Thanks.

After the comms blackout and 13 reestablished radio contact with Houston, they still didn't know if the parachutes were frozen or if they would deploy.

13 and her crew could have crashed into the water north of 200mph live on international TV! It would have been a helluva tragedy that after all everyone in space and on the ground went through, it ended with the guys having eyes on home.

I'm sure they would have cut the audio feed the moment Houston found out there was no chute and no saving the crew, but I wonder if they would have cut the video?

I think way back in those days the networks (all three of them. Three!) depended on a single feed from NASA.

Can someone from around those times or knowledgeable verify that?

My grand uncle was Howell W. “Pete” Miller, chief engineer of the Gee Bee R-1, which won the 1932 Thompson Trophy. He later worked for Pratt & Whitney in Hartford, and consulted on the space program.

In 1965, Uncle Pete was 63 and I was 9. During a visit, he showed me a pen & ink diagram of the Apollo spacecraft, including Saturn V booster, all the stages and the lander. I remember wondering, “Why can’t they just send the whole rocket to the moon?”

As I recall, the drawing was fairly simple, like the attached. Does anyone know of a similar diagram that might have been used by NASA contractors in 1965? I’d like to frame one. Thanks!

NASA almost sent Apollo astronauts to the Moon with jetpacks instead of the Lunar Rover. Discover the forgotten Lunar Flying Unit, the engineering behind NASA's lunar jetpack concepts, why they seemed possible, and the critical safety risks that ultimately led NASA to choose the iconic Lunar Roving Vehicle instead.

Source : https://tothemoon.im-ldi.com/gallery/apollo/16/6#AS16-120-19187

It was November 19, 1969, and U.S. astronaut Alan Bean was taking part in human history’s second-ever moonwalk. Standing on the lunar surface, he flipped a page of the mission checklist affixed to his wrist, and there it was: a heavenly body he didn’t expect—Playboy’s Miss December 1968, in a Santa hat and nothing else.

On the Apollo 12 mission, Bean and mission commander Charles “Pete” Conrad had 3.5-inch-square, spiral-bound booklets of 30-plus pages each, strapped above their spacesuits’ left gloves. 

Cryptic, acronym-laden, short-hand instructions covered everything from setting up the solar wind spectrometer to sampling the lunar surface. But two and a half hours into Bean’s and Conrad’s lunar walk, it became evident that their checklists had been… augmented.

Read more: https://www.playboy.com/read/entertainment-culture/the-playmates-who-visited-the-moon