Going to 5 PSI in a homemade space suit
Added 2024-10-19 07:41:22 +0000 UTCWe were using an external oxygen source for the demonstration and in the chaos the regulator went to higher pressure than intended. There is a bleed valve that would have started dumping at 6PSI if I hadn't caught it. Suit has been tested to 12 so I wasn't too concerned. Still, we had a chat about this and will implement extra safeguards.
Comments
Just saw this post on twitter looking for info on the history of space suits: https://x.com/DKiSAerospace/status/1848790657072034040 Did you or your collaborators find any cool historical tidbits while building your suit?
Urbane Myth
2024-10-23 15:12:27 +0000 UTCI take the green tank is for oxygen in USA? Remember that given enough of oxygen, every ignition source becomes more efficient and the fires are very aggressive. Combine that with higher pressure and you really are living dangerously inside that suit. A local steel factory had oxygen line accident whose primary reason can only be guessed, as the line, the valve, three meters of steel walk bridge and two workers were burned to ashes leaving nothing behind to analyze. Low external pressure forces us to use higher concentrations of oxygen to live (high enough partial pressure), but in normal pressure, it is safer to avoid using oxygen. (although some swear that it relieves hangover really fast)
Tuomas Haarala
2024-10-22 17:23:01 +0000 UTCIt's kinda interesting. Low pressure changes cause just as you say pain and discomfort but large changes don't. It's like some threshold is reached and it's not so bad.
CodyDon Reeder
2024-10-21 19:42:54 +0000 UTCThats not even rapid rate. But the highest rate we would stand trying to get the job done. I think 850 ft / min is recommended. My inner ears had problems from time to time from that stuff.
Isaac
2024-10-21 17:40:43 +0000 UTCRapid depressurization sucks. I went down 1000ft / min in the aircrafts after window changes. Leak checks. 4.0 differential psi. Becareful bro
Isaac
2024-10-21 17:38:43 +0000 UTCCan you feel it in your ears? If I dive so much as 2 feet down and my ears ache.
Calum Stevens
2024-10-20 14:13:44 +0000 UTCIt's a pity you've got to contend with Earth's gravity. I imagine standing back up on Mars might not be so difficult.
Aiden M
2024-10-19 19:15:29 +0000 UTCSaw you in this suit at OpenSauce and my first impression was there was a ton of information processing going on, and you were distracted by all that, did you feel overworked in the suit? I assume you get better at using the suit every time you use it? Was glad to see you had helpers! Also glad for the selfie with my wife and me, all my kids were envious! Our kids, all in their 20s now, have been watching you since early on, and got us interested in the way you present the science, our nephew (Colby) strongly resembles you, so they would joke, "hey look, Colby's on YouTube" but then watching that first video made it clear, there's a reason it's Cody's Lab, not Colby's Lab π keep up the good work, would love to see more science of the suit, and if you could wrangle a suit test in a low pressure chamber if you haven't already.
Ken Barlow
2024-10-19 13:04:39 +0000 UTCVery cool!!! So awesome to see video of you two π
PETER J SASSAMAN
2024-10-19 07:50:56 +0000 UTC
