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Behind the Scenes:

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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

IBM’s page on the Saturn Guidance Computer

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36 پاسخ به “How did NASA Steer the Saturn V?- Smarter Every Day 223”

  1. 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. ( https://youtu.be/6mMK6iSZsAs )
    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. ( https://www.patreon.com/smartereveryday )

  6. During a point in my career I worked with the lady who built the solid state camera that went to the moon,I am sure she also built some of the memory modules you are referring too in your video.Yes all that work was done by hand under a microscope day by day until it was finished, then it went to the shaker where it fell apart and had to be done again this time all the parts were siliconed in place.

  8. In my mind, the best thing thing this country ever did was focus our Best and Brightest on the stars: Mercury, Gemini, Apollo and Shuttle. Aspire to something higher!

  10. Making a core memory was greatly facilitated by the Core Loading Plates that Hutchinson Technology made for all the memory makers. A core loading plate had thousands of tiny slots, one slot for each a small donut-shaped core, all aligned according to the design of the plane. A plate was made as a stack of photo-etched foils, all laminated to make a plate up to ~ 12 x 12 x 1/16" thick. Each layer was different to make a nest for the cylindrical core with generous corner relief so as not to trap a core. Lower layers had a smaller circular vacuum hole to pull the core into place.

    To fill the late it was put in a vibrating fixture that applied vacuum. Then an excess of cores was poured over the plate surface and the cores fell or were sucked into place. Any extra cores were gently brushed away with a fine brush, and the cores were transferred onto a tacky foam, ready to be strung with the wires.

    All this was clean room work requiring the utmost in precision and defect elimination.

    jdg

  14. I would LOVE to see the physical testing rig they put the completed computers through and the write-read-write-read tests they executed while this thing was wildly vibrating in the test rig.

  19. My grandfather was a literal computer as well. He was the Vice president of sales of sales for the Herman Lay company. Be thankfull a employees of that company. Your job would not exist without him.

  20. I was there just a few hours ago, I can't believe the patience they had to program that by hand! Thanks for making this video Destin, I was really able to appreciate the efforts that went into making this when I saw it.

  25. And just think. This could all had been accomplished with a $2.00 Arduino Nano with Memory to spare. LOL My first computer was a ZX81 that came stock with 1K of RAM. I upgraded mine to 16K LOL… Even one ZX81 would have been more then they had to work with. Not to mention a few hundred lb's lighter ? Flipping Amazing what they could and did in fact do back then.

  27. Steering can be accomplished relatively easily using maybe 100-200 lines of code. You just need a PID loop with adequately tuned parameters. Just an issue of writing that code into something like that.

  32. so.. if i get this correct.. it was an 8Bit memory, of 14 Kilobyte.. that means that there are 114688 cores in there?..woven by hand.. building a memory bit by bit.. let that sink in…
    My first computer in 1985 (Commodore C16) had about the same amount of memory (12277 Bytes), but by that time it already was way smaller..
    our modern day Mobile phones already have like 16 Gigabytes of memory.. and a quadcore processor.. try to imagine a ringcore memory of that size..

    What these guys did with only 14Kb is astonishing.. i wrote some software for a CNC Mill, just the machining cycles alone are 35 Kb…but then.. a rocket is only guide along a "simple curve" like a line with one basic orientation along a curve.. where a CNC mill moves in all directions, and in some cases on 3 axes simultaneously..

  36. Incredible amounts of labor because he said "We are going to the moon in this decade"….. With the same amount of labor and money the USA could of built a wall all the way around it's borders two times with gold in-lay…and built housing for the homeless with pools and golf courses…..and free health care for all until eternity….free collage.
    These Democrats are sort of Hitler-esk.
    Wir gehen in diesem Jahrzehnt zum Mond!!!!!!!!!!
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