Apollo Guidance Computer Part 29: Mikes Scores a Coupling Data Unit (CDU)

Comments · 269

• KR

  @krisztiannemeth6148 · 3 years ago · pinned

  At <a href="https://www.youtube.com/watch?v=IsIXrveEL1M&amp;t=370">6:10</a> it was kind of hard to understand. You said &quot;one is a sine, the other is a cosine&quot;, but on the scope there are two sinusoidal waveforms with a 180 degree phase shift. First I thought &quot;one is a sine, the other is a minus sine&quot;. Then I realized that its not the phase of these sines, but the amplitude you are talking about. So by turning the shaft to say alpha degree the <i>amplitude</i> of the sine waves change like sin(alpha), and cos(alpha).

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• RJ

  @rjcroy · 3 years ago

  Recreating the 1202 error would be such an exciting thing to see! I can&apos;t wait for that! And it would progress the explanation? Wow!

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• JO

  @jonathanhendry9759 · 3 years ago

  I wonder if that combo was put together originally by someone to reproduce the 1202 error.

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• TH

  @thewavesmith5754 · 3 years ago

  I just love watching this series, as a small child aged 6, my dad used to buy me old TVs to take apart. I was and still am at my happiest taking stuff apart to see how it works. Clearly that is often not as much fun as it used to be with things getting more complicated. But this series brings back that fun

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• GA

  @garbleduser · 3 years ago

  The fact that MIKE actually got this is evidence that the universe is nostalgic for this period in history and wants to share the memory.

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• EX

  @exi · 3 years ago

  So we got an Apollo 7 CM Upper and a Apollo 11 LM lower that has been confirmed to be put together in the lab. I cannot stop thinking that someone might just had tried to recreate the 1202 error and used exactly the perfect hardware for it that happened to lie around. Which coincidentally is exactly what you are trying to do now. Amazing thought.

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• ER

  @erickvond6825 · 3 years ago

  If I had to wager a guess, I&apos;d say they built that unit up to reproduce the same 1202 error experienced in the flight module it corresponds to. Since it indicates that it was used in the lab that is. This makes it an excellent candidate to recreate the error in YOUR lab in my opinion.

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• VI

  @vibrolax · 3 years ago

  Now let&apos;s find Eagle&apos;s ascent module in lunar orbit, and recover it.

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• NM

  @nmccw3245 · 3 years ago

  Oh yeah! &nbsp;This Frankenstein lab CDU could not be in better hands. &nbsp;Congrats to Mike and can’t wait to see it future videos. &nbsp;👍🏻

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• MI

  @MillenniumMacs · 3 years ago

  Amazing work from Mike, that guy&apos;s probably one of the most qualified spacecraft historians on earth by now, I am pretty sure he&apos;s forgotten more about the Apollo program than I&apos;ve ever known (and i his case probably still has the document with it in anyway, and knows how to find it again!). Every single morsel you uncover in this series is fascinating, thank you for brining it to us in such a great series of videos.

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• PR

  @prjndigo · 3 years ago

  So what I&apos;m getting is someone assembled a unit to test the 1202 error theory out but it didn&apos;t get documented.... so you not only found a unicorn, you found the <i>exact</i> unicorn you needed.

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• BE

  @benjaminhanke79 · 3 years ago

  I didn&apos;t know I still have a lot of questions about the 1202 Alarm.<br>I&apos;m looking forward for the next episode!

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