4 ms·
This summary of events is incorrect. The LM guidance computer’s executive routines detected an overload (which occurred because Buzz Aldrin had left the rendezv
by lunar-whitey 1y ago
This summary of events is incorrect. The LM guidance computer’s executive routines detected an overload (which occurred because Buzz Aldrin had left the rendezvous radar on) and continued to operate in a degraded state where lower priority work was not performed. These faults were reported and the landing proceeded with the computer remaining responsive to inputs despite the concerns the alarms produced. Armstrong’s control changes near the end of the descent were made for reasons unrelated to the rendezvous radar error.
Modern systems use more formal techniques to achieve the same goal: graceful degradation.
For a detailed account of computer operations during the Apollo 11 landing, you can read this analysis from an engineer who worked on the program:
https://www.doneyles.com/LM/Tales.html https://www.doneyles.com/LM/Tales.html