>>16724913the people who would have been hired to hand-build analog flight computers are hand-building turing machines in Minecraft today, for fun
the people who work at NASA now would have worked at cafeteria in the 60s
>>16724854 (OP)1) divers (typically) use compressed air with 79% nitrogen
Apollo suits used pure oxygen
that alone means you carry 5 times more oxygen in the same tank
2) Apollo spacesuits are re-breathers.
It has hydroxide tank that absorbs CO2, so you can keep reusing the same air over and over until all is actually spent.
Divers typically just dump exhaled air with CO2 outside because it's generally safer option
3) The deeper you dive, the higher pressure you need to inhale and exhale overcome the water pushing in
meaning you use up even more air.
1 bar every 10 meters.
And at high pressure, oxygen becomes toxic, so you need to mix in extra nitrogen or helium to get the same partial pressure, which means it will run out of air even faster
deep divers have to use re-breathers and exotic mixes (like 5% oxygen and 95% helium)