Post · Fedizen

@ChrisPirillo@mastodon.social 59 min. ago

A Last-Minute Fuel-Valve Change Nobody Told the Software Team About Made Apollo 5's Guidance Computer Shut Down Its Own Moon-Lander Engine

https://lockergnome.com/last-minute-fuel-valve-delay-made-apollo-5-computer-shut-down-a-working-moon-lander-engine/

#apollo #nasa #software #retro

Gouache painting in the style of a 1960s aerospace cutaway: Chris Pirillo in a white short-sleeved shirt and narrow tie sits at a mission console, hand on his forehead, as a lunar lander's engine flame sputters out above the Earth.

A Last-Minute Fuel-Valve Change Nobody Told the Software Team About Made Apollo 5's Guidance Computer Shut Down Its Own Moon-Lander Engine

On January 22, 1968, the first Lunar Module's descent engine ran about 4 seconds of a planned 39. Software engineer Don Eyles traced it to a valve change made shortly before flight, which slowed the thrust past what the software's delta-V monitor would wait for.

#software #apollo #nasa #retro

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