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Re: OT: VOYAGER 1 STILL GOING!
Posted: Sat Nov 16, 2024 10:24 pm
by BigDumbDinosaur
Aldrin actually did have to reboot it several times during the lunar descent...!
...thereby limiting crashes to the computer and not the lunar module. 
Airbus could have learned a lesson from that before having one of their fly-by-wire-and-computer planes go down due to an unanticipated software sequence denying the pilot manual control at an inopportune moment.
Re: OT: VOYAGER 1 STILL GOING!
Posted: Sat Nov 16, 2024 10:40 pm
by commodorejohn
Indeed...
Re: OT: VOYAGER 1 STILL GOING!
Posted: Sun Nov 17, 2024 6:48 pm
by DRG
...they just made it as quick and simple as possible for it to resume from a crash, pick up where it left off, and give the pilot control again
Aldrin actually did have to reboot it several times during the lunar descent...!
Yes, I understand that the computer rebooted itself after each 1201 or 1202 alarm.
https://www.nasa.gov/history/alsj/a11/a11.1201-pa.html. There was only 2K of "RAM" and to cope with this, some memory locations were used by up to 7 programs - now that needed some keeping track of: imagine a program assuming it was reading the calculated altitude only to read in the speed because it was overwritten by another program!