Why the Apollo Bubble Helmet was Retired 

Amazing video but I need to ask something. I never found out if my name was on the I need more moon plate!

The bubble helmets do not retire after the Apollo program. The Space Shuttle astronauts and ISS astronauts still use Apollo style bubble helmets as part of their EVA suits!

Ok

Yo Marcus!

Hey hey Marcus House!

:)

Same ! As is my American way...i never thought about it.

Same! Great video! nice sponsor lol

@@INeedMoreSpace The bubble helmets do not retire after the Apollo program. The Space Shuttle astronauts and ISS astronauts still use Apollo style bubble helmets as part of their EVA suits!

To reduce weight they need to reuse things

I appreciate the sponsor announcement also. Good stuff. Funny.

The SpaceX suit doesn't even look like a spacesuit to me.

don't tempt me

👍🏻

The IVA/EVA combo presented a few issues. For one the weighed more and were impossible to put on by yourself. IVA suits today allow a crew member to don them on their own, have less mass, and are overall safer.

RIGHT ? !

The Apollo EMU was very cumbersome, and they lacked mobility. It was difficult to walk on the moon with them, as well as gathering samples etc, so they are designing a new suit which will give them improved mobility compared to the A7L/A7LB EMU.

Thanks! There are endless rabbit holes to burrow through

thank you for watching!

Thanks and welcome!

money

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I'm trying!!!

@@INeedMoreSpace And we appreciate it. But as Felix says: There is a lot going on in the space industry lately. If its a topics thing we can help.

Darrin, just bring on the thumbs my dude

@@INeedMoreSpace Great response. Too cool.

yes they had separate IVA/EVA gloves but for lunar EVA they just had a boot covering they would put over their feet. On earlier missions, the bubble did not have an additional layer of protection. now on ISS, the bubble does have one extra transparent layer for added protection but it's not sealed.

@@INeedMoreSpace thanks so much. I know quite a deal about rocket hardware, and dynamics, but this part I always missed.

@@INeedMoreSpace one more question. I mean, they had some environmental issues, like cold temperatures and potential decompression. Why didn't they use those suites on 13? Because of power shortage, and the crew would be worse off? Because it needs to be powered at all times? Or plain mobility?

@@alexprokhorov407 A couple of reasons. The suits need "power" in the sense that the environmental control system in the Command Module must pump air through the suit constantly because the air is also used to cool the astronauts (they didn't wear the liquid cooling garments inside the command module, and also, the Command Module Pilot did not have a liquid cooling garment at all) whilst wearing them in the command module. Jim Lovell said that they thought about donning them (as they had doffed them shortly after docking with the Lunar Module as per the flight plan), but they decided against it because since they wouldn't be hooked up to the spacecraft, they'd just start sweating and that would have defeated the purpose to wear them in the first place. They did however (Lovell and Haise) wear their lunar boots for extra warmth, Swigert of course, did not have a pair of lunar boots so he had to manage without them.

@@Nghilifa thanks

suit pressure is greater than 1 atmosphere so if you were at sea level you wouldnt be able to remove it

@@INeedMoreSpace i still dont undertand, why would you want to quickly remove your helmet in an emergency? also wasnt the suit pressure during apollo EVAs around 0.2 bar pure o2? also even if you have a different helmet design you never would want to open a visor when there is a pressure difference between inside the suit and outside the suit. so every spacesuit has releave valves.. so i dont get the whole point 🤔

@@INeedMoreSpace No, the suits were pressurized to 3.5 psi during an EVA, the spacecraft atmosphere was 16.9 psi (oxygen/nitrogen)(one atmosphere) for launch, but it was purged during the ascent and settled at 5.5 psi sometime around S-II ignition. This is why they had to wear the suits "fully sealed" before & during launch as it served as the pre-breathing routine in anticipation for the 5.5 psi cabin atmosphere they'd be exposed to once they removed their helmets after orbital insertion. If they hadn't done that, they'd get the bends like a scubadiver.

🤪