Apollo Software

[4ster]

After running into this thread a few days ago I was able to recognize the subject of a youtube video that I may have passed by when it randomly appeared on the "Up Next" list. The speaker covers development and use of the AGC in flight. I really enjoyed it and wanted to pass it along here.
AGC development and operation

The speaker is a historian of the AGC. At one point he remarks on some of the bugs discovered when researching the AGC. For instance, when the radar system signals that the lunar module has landed, the AGC shuts down the engine. There was no over ride. There are a number of craters on the moon that due to their shape, when flown over, the radar would interpret the return signal as a landing.... This was discovered years after the Apollo program by running many simulations when studying the AGC.