SpaceX

1939 readers

7 users here now

A community for discussing SpaceX.

Related space communities:

Memes:

[email protected]

founded 1 year ago

MODERATORS

[email protected]

Everyday Astronaut: Interview with the Polaris Dawn Crew (youtu.be)

submitted 6 months ago by [email protected] to c/[email protected]

13 comments fedilink hide all child comments

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 3 points 6 months ago (1 children)

Even the command module was pure oxygen at 5 psi. There was the Apollo 1 fire, but otherwise I don't remember that there were any major issues.

[–] [email protected] 3 points 6 months ago (1 children)

The pressure in the Apollo 1 capsule was 16.7 PSI or 1.14 atmospheres of pure oxygen. That's almost 5.5 times the partial pressure of oxygen at sea level. At 5 PSI, the Polaris crew will only be at 1.6 times the partial pressure of oxygen at sea level.

[–] [email protected] 2 points 6 months ago (1 children)

You're right, the Apollo 1 was significantly higher pressure. Didn't know that. 😲 Makes somewhat more sense they could keep a pure oxygen atmosphere even after the accident.

Also, calculating partial pressures in psi is really annoying.

[–] [email protected] 2 points 6 months ago

kPa and Bar are obviously superior units!