We open up a Block I Apollo AC inverter, which gets us totally sidetracked into the Apollo 13 incident. Using the original schematics, looking how our inverter was hooked up in the power system, we can follow word for word the Apollo 13 raw audio of the debug after the accident. I will go into much more engineering details than what is usually reported, but once you understand this, the flight control loops become both limpid and downright chilling. And then, when we regain our composure and get back to said inverter, more surprises await.

Apollo 13 incident composite loop is on my website here:
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An even better way to listen to the Apollo 13 audio is to go to:
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Select "join at launch-1minute", then pause it and go to mission time 55:54.
To get an even better listen, go to the Mission Audio Control tab, and click on EECOM. You'll hear even more of the backroom discussion between EECOM and EPS

The episode about the fuel cell is here:
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Links to doc:
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Music Credit: Crinoline Dreams by Kevin MacLeod

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