How did NASA Steer the Saturn V?- Smarter Every Day 223

  • Published: 08 August 2019
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    Behind the Scenes:

    View Linus's video:


    Functional Requirements for the Launch Vechile Digital Computer

    Launch Vehicle Digital Computer

    Dr. von Braun (seated) examining a Saturn computer in the Astrionics Laboratory at the Marshall Space Flight Center

    U.S. Space & Rocket Center,_Alabama

    IBM's page on the Saturn Guidance Computer

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  • Science and Technology Science and Technology

Comments • 3 626

  • SmarterEveryDay
    SmarterEveryDay   2 weeks back

    I would like to point out several things:
    1. Luke Talley is awesome.
    2. Every single frame of this video requires more memory storage than this memory module is capable of handling. Think about that.
    3. On the second channel we talk about things like how they took into account gyroscopic precession with this bad boy. They also crashed this into the moon and used the signal as a way to figure out what the inside of the moon is like. It's a good video, you should consider watching it. ( )
    4. This is not the Apollo computer. This is the Saturn V computer. They're different. This steered the rocket.
    5. People that support Smarter Every Day on Patreon are really cool and I like them a lot. ( )

    • Unknown Infamous
      Unknown Infamous  6 minutes back

      Flearther McPlane he actually knows we didn’t but is too scared to go against the grain. He used to have a video with all kinds of proofs we didn’t go. But his nerd fan base that keep him paid , persuaded him to remove his videos and follow like a good boy. He’s a sellout..

    • Unknown Infamous
      Unknown Infamous  17 minutes back

      Dr. David Banner F.E.S. I asked the same question. Lol Except I accounted for a torr 10 and the magic O-Rings used in the Cupola. Don the lousiest liar Pettit. Dude gets caught lying all the time and acts like a deer in headlights. Lol

    • Unknown Infamous
      Unknown Infamous  29 minutes back

      SmarterEveryDay what happened to your epic videos confronting the nasa lies? Like magic O- Rings and Van Allen Radiation belts or create one with the physics needed to achieve a quarter million mile trips fuel ratios and needed oxygen tank space plus heat and radiation deterrents. Effects of a vacuum of torr 10 on thrusters or ignition sources.. is a firmament really too far fetched? Considering the Sierra Leone sky stone or Libyan desert glass..

    • Unknown Infamous
      Unknown Infamous  60 minutes back

      Why would you succumb to the peer pressure of fake space. I honestly lost a bit of respect for you taking down your videos of nasa lies. Now you’re riding the train of lies because you don’t have the balls to stand for what you know to be true. If it’s all fake and God is real, where do you stand when judgment calls? With the crowd of people that believe everything they are told to fit in? Shame on you for choosing the wide road to destruction. You could have been the deciding factor in someone’s salvation...🧐

    • Flearther McPlane
      Flearther McPlane  8 hours back

      Dumber Every Day thinks we went to the Moon...

  • James Hecker
    James Hecker  1 hours back

    Great video, very informative, as always, but...what's with the ubiquitous ball cap?

    • Steve Bez
      Steve Bez  2 hours back

      Hmm,enc rip etaa, Ntfs,ringo,beat app alls, double u bubble u rock it say a rents,poke,Sputnicks,dog!

      • Flearther McPlane
        Flearther McPlane  8 hours back

        LMAO! Still trying to reinforce the Moon hoax.
        The rocket went ''''''splash'''''' in the ocean. No one was on board and that's - the end!
        ...or the beginning of the same practice which has retarded people (self prescribed intellects) thinking we actually go to the imaginary place they call, "SPACE"...
        You should rename our channel to, "Dumber Every Day". It's far more appropriate!

        • Brown Sugar
          Brown Sugar  17 hours back

          science take you to the moon, religion take to the dumpster

          • Fernando Rizo
            Fernando Rizo  18 hours back

            Dude, awesome video. Respect the father of all this. Linus is just not welcome. Respect. RESPECT. Hey SmarterEveryDay
            , no more Linus.

            • Pedro Giafferis
              Pedro Giafferis  20 hours back

              This is crazy!!!

              • scooby405
                scooby405  20 hours back

                Can you make a video on aerogel

                • Kirk P
                  Kirk P  23 hours back

                  From back in the days when electrons were the size of Cocoa Puffs...LOL!

                  • Mr Memes
                    Mr Memes  1 days back

                    I've actually been here

                    • Wuety06
                      Wuety06  1 days back

                      Jesus Linus sure u could China has small hands

                      • Wuety06
                        Wuety06  1 days back

                        It's rope memory

                        • Christian Gather
                          Christian Gather  1 days back

                          How can you thumbs down this??? Awesome video guys!! I learned something new (old) today :)

                          • nicotate07
                            nicotate07  2 days back

                            I love seeing my two favourite youtubers sharing the stuff they're passionate about!

                            • Ash Sherr
                              Ash Sherr  2 days back

                              this is the prick that kidnapped jesse pinkman

                              • Zareer K'Maneck
                                Zareer K'Maneck  2 days back

                                My 5 yr old boy and I love your videos. In fact your video on laminar flow impressed him so much that when he visits a fountain of any sort that is all he looks for. Can you do a video explaining Prince Rupert's drops. Thanks.

                                • Qaveth
                                  Qaveth  2 days back

                                  Typical space videos by nasa, real life money loss, aka launching rockets into the sea with no humans, then cgi all the way till they end, last but not least recycle rocket from sea and repeat.

                                  • burgershot
                                    burgershot  2 days back

                                    This is MINDBLOWING

                                    • Abhinav Sharma
                                      Abhinav Sharma  2 days back

                                      Luke : "It was used in SATURN V"

                                      Linus : "But will it run CRYSIS?!"

                                      • Terracom 7
                                        Terracom 7  2 days back

                                        so I found a cool science anomaly that I haven't seen before and I searched it up and can't find it or an explanation. if you take a 2 by 4 block of aluminum and you put it on its side, so the short side is facing up. then if you slightly slant the block and roll a cylinder magnet down at a slight angle it will seem to bounce off the side of the wall as if there is an invisible barrier.

                                        • Ken Haley
                                          Ken Haley  2 days back

                                          At 2:00, you are describing "core" memory, which was the type of memory used in most computers up to around 1975-1980, when semiconductor memory first entered the scene. I worked on an IBM 1620, a 1401 and others, including a minicomputer made by a company called Microdata, which all used core memory. (I'm 72.)

                                          I still have three 8K memory boards from that Microdata computer. (Failure of this type of memory was common, so I decided to save boards when they were replaced.) I remember they were priced at $3,500 each back then, or around 5 cents/bit. At that rate, 16GB of RAM (128 billion bits), now commonplace in PC's, would cost 6.4 billion dollars (without accounting for inflation)! That's over double the entire Apollo program budget. (Good thing they didn't need 16GB.)

                                          Just as shown in this video, I can see the little cores arranged on the grid of wires. I was amazed back then, and I still find it impressive today. Here's an interesting fact about core memory: In order to read a bit, the computer would actually write a zero at that location. A sense wire running through all the bits on that plane would detect a pulse if that location originally contained a 1 because reversing the magnetic direction would induce that electric pulse. A second cycle was then required to restore the bit back to a 1 (or leave it as 0 if no pulse was detected). This was known as "destructive" read, requiring two machine cycles. One cycle on the Microdata was one microsecond (1 MHz). A modern CPU running at 4GHz is 4,000 times faster. But one cool thing: if the computer lost power, core memory was preserved! It wasn't 100% reliable, but often, when the computer was powered back on after a power failure, it could continue running where it left off!

                                          Anyway, I am wondering what to do with these memory boards. Right now, they're just gathering dust in my closet. Any ideas?

                                          • Micha Grill
                                            Micha Grill  3 days back

                                            Not gonna lie that ad at the end was pretty salty :P

                                            • Carlthehamster
                                              Carlthehamster  3 days back

                                              ok now i love this episode because of linus and rockets xD

                                              • Gydo194
                                                Gydo194  3 days back

                                                of course Linus likes the cooling system the most LOL

                                                • Oliver McIlwain
                                                  Oliver McIlwain  3 days back

                                                  Why do surfaces get dark when wet?

                                                  • mohammad ziad
                                                    mohammad ziad  3 days back

                                                    And then a flat earther come and say the space is fake.

                                                    • Eat Jat
                                                      Eat Jat  3 days back

                                                      747 dislikes. How ironic.

                                                      • Nathan Weisser
                                                        Nathan Weisser  3 days back

                                                        This video is supposed to be about a modern computer nerd and a 60s computer scientist interacting with each other, but what I'm more interested in is Linus being on the same screen as someone with a native Alabama accent lol

                                                        • Against NAZO!
                                                          Against NAZO!  3 days back

                                                          But what's with technology a few years later?
                                                          Would the MOS 6502 Processsor of Comodore64 be enough to steer such a rocket?

                                                          • Klippy Klop
                                                            Klippy Klop  3 days back

                                                            very, very clever. Cut from a different cloth.

                                                            • Lisa Johnson
                                                              Lisa Johnson  3 days back

                                                              Absolutely INCREDIBLE!!! I remember getting up early in the morning in the 1960's to watch a rocket launch on TV and it was an amazing feat back in the day. To see this "computer" that made that happy is mind blowing. These guys were amazing and it worked. Thanks for this very cool video.

                                                              • donven33
                                                                donven33  3 days back

                                                                Hey Dustin, I am a long time Audible client but still go and check out your recommendation everytime you make one. Just curious what else do you have in your Audible collection please?
                                                                Thanks in advance!

                                                                • Astrowixa102 Elon
                                                                  Astrowixa102 Elon  4 days back

                                                                  Saturn VRGB

                                                                  • AJ Google
                                                                    AJ Google  4 days back

                                                                    I'd appreciate more audiobooks recommendations :)

                                                                    • mar sag
                                                                      mar sag  4 days back

                                                                      these guys who made it in the '60s are authentical heroes!

                                                                      • pawn pawnee
                                                                        pawn pawnee  4 days back

                                                                        Flat earthers would like to disagree.

                                                                        • ghanzo
                                                                          ghanzo  4 days back

                                                                          You can see the doubt building in Linus eyes, that the mission even happened.

                                                                          • Paul Rickett
                                                                            Paul Rickett  4 days back

                                                                            DumberEveryDay still hasn't figured out that the Apollo program never went to the moon. Earth is flat!

                                                                          • Jammy Pockets
                                                                            Jammy Pockets  4 days back

                                                                            You get a free book on your first month of audible anyway, so what is the benefit of typing 'smarter'? Do you get an extra free book in your first month with this code?

                                                                            • DeRiften
                                                                              DeRiften  4 days back

                                                                              Meanwhile today, people with no computer knowledge whatsoever can make complex games, and even the most basic of optimizations are a thing of the past. Engineers back then were goddamn geniuses

                                                                              • Alden Zenko
                                                                                Alden Zenko  1 days back

                                                                                You might be surprised at some of the optimizations that modern compilers do automatically. No reason to reinvent the wheel

                                                                              • Roger Skagerström
                                                                                Roger Skagerström  2 days back

                                                                                Well the ones today that makes all the stuff so easy "on the surface" aren't morons either :D Well.. Some on Microsoft must be. But generally ;)

                                                                            • Shrop Shire
                                                                              Shrop Shire  4 days back


                                                                              • Technomaniac Dude
                                                                                Technomaniac Dude  4 days back

                                                                                He was a dumb choice

                                                                                • rahul suryawanshi
                                                                                  rahul suryawanshi  4 days back

                                                                                  It was the passion of few peoples who broke all the barriers.. Hats off to them.. Wish I could be among them...

                                                                                  • John Goodman
                                                                                    John Goodman  5 days back

                                                                                    What a fantastic insight from the wonderful gentleman who worked on creating those memory modules. Superb work. Thank you for putting this great video out :)

                                                                                    • ChrisCDXX
                                                                                      ChrisCDXX  5 days back

                                                                                      You should zoom out more or sit farther back. No need to be all up in that camera dude. Love your videos!!

                                                                                      • poida84
                                                                                        poida84  5 days back

                                                                                        you should do a video about Hearing aids and cochlear implants

                                                                                        • Max Mcallister
                                                                                          Max Mcallister  5 days back

                                                                                          After watching almost every one of your videos when you say "Lets go get smarter every day" still makes me smile with excitement about what I'm going to learn. Never change Destin, never change.

                                                                                          • imperiajor
                                                                                            imperiajor  5 days back

                                                                                            Awesome video man, Congrats ^-^