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Artemis II's toilet is a moon mission milestone

scientificamerican.com

21–30 of 183 posts

Re: Artemis II's toilet is a moon mission milestone

#23
post #19

Toileting is really fecking important. As someone with a spinal injury you really don't realise just how important until it goes wrong. Apparently one of the down sides about the previous system was that the separation of solid and liquid excreta ideally required someone to separate their excretion of both kinds. Apparently this is something that male astronauts found much much easier than female ones. Artemis's toil…

> separation of solid and liquid excreta this invention might be of use in livestock farming.

GP is saying that was previously required, not that it was invented. The new one can handle the mixture; not necessarily (presumably not?) by separating it.

Re: Artemis II's toilet is a moon mission milestone

#24

This is one of those stupid, unglamorous works that legitimately facilitates long-term space exploration ambitions in a way just focusing on the sexy bits, e.g. propulsion.

I gauge the seriousness of all manned space exploration proposals by the attention paid to the toilets. If the toilets are not a solved problem with many nines of reliability, you're just writing science function and are not at all serious about actual manned space exploration. Toilets are the brown M&M clause[0] of manned spaceflight proposals.

Toilets are unglamorous in the extreme but absolutely vital. Humans make hazardous and potentially deadly waste. Every day. It needs to be safely discarded/contained. In a sealed environment in microgravity it's even more dangerous than it is on Earth.

Aerosolized fecal matter can enter the lungs and cause deadly infections. Entering the digestive system can cause debilitating (possibly deadly) illness. Temporary blindness if it gets in the eyes. It can also cause mechanical or electrical problems if it gets in equipment. All of these can lead to a mission failure and in extreme instances a total loss of the crew. Apollo 8 was extremely lucky that Frank Borman's illness didn't cause more problems.

If you're not thinking logistics and infrastructure you're not really serious about an endeavor.

[0] https://www.smithsonianmag.com/arts-culture/why-did-van-hale...

Re: Artemis II's toilet is a moon mission milestone

#25

This is one of those stupid, unglamorous works that legitimately facilitates long-term space exploration ambitions in a way just focusing on the sexy bits, e.g. propulsion.

I gauge the seriousness of all manned space exploration proposals by the attention paid to the toilets. If the toilets are not a solved problem with many nines of reliability, you're just writing science function and are not at all serious about actual manned space exploration. Toilets are the brown M&M clause[0] of manned spaceflight proposals. Toilets are unglamorous in the extreme but absolutely vital. Humans make…

I see your point. Out of curiosity:

> In a sealed environment in microgravity it's even more dangerous than it is on Earth. / Aerosolized fecal matter can enter the lungs and cause deadly infections.

Would the air filtration / recycling system minimize this risk?

Re: Artemis II's toilet is a moon mission milestone

#26
Reduced need for waste disposal is one of the mixed blessings of a steady diet of MRE's (sometimes called "Meals Refusing to Exit"). It's sobering to realize that anyone who has ever set foot on the moon was most likely backed up in a bad way when they stepped out of their LEM.

Re: Artemis II's toilet is a moon mission milestone

#27
post #25

Earlier quoted context omitted.

I gauge the seriousness of all manned space exploration proposals by the attention paid to the toilets. If the toilets are not a solved problem with many nines of reliability, you're just writing science function and are not at all serious about actual manned space exploration. Toilets are the brown M&M clause[0] of manned spaceflight proposals. Toilets are unglamorous in the extreme but absolutely vital. Humans make…

I see your point. Out of curiosity: > In a sealed environment in microgravity it's even more dangerous than it is on Earth. / Aerosolized fecal matter can enter the lungs and cause deadly infections. Would the air filtration / recycling system minimize this risk?

The air filtration will actually help spread aerosols because air currents will carry them through the cabin before they're captured by a filter.

A high power "eliminate aerosols" mode would be one of those infrastructure things that need to be designed (and tested). Even then a single compartment spacecraft like the Orion or Dragon wouldn't have anywhere for the crew to bivouac while some aerosol evacuation mode was active. So you'd want a whole procedure designed around it.

Part of the need for the Apollo Constant Wear Garments was to make up for the lack of faculties in the command module and LEM. Such a thing would be impractical for a long duration mission so toilets (and waste disposal in general) need to be a reliably solved problem.

Re: Artemis II's toilet is a moon mission milestone

#28
post #9

Listening to the live stream yesterday evening - they performed a significant amount of troubleshooting for the toilet. This required consulting with a full team of experts, including a "Toilet Lead". It seems it wasn't "flushing" waste into the collection bag or something similar - but they were eventually able to get it working. I found the language NASA and the astronauts used to communicate absolutely hilarious -…

I love this. No matter what we do and how far we push the limits of humanity, we still have to shit.

Re: Artemis II's toilet is a moon mission milestone

#29

One of the good laughs I had watching 2001 was Haywood reading the instructions for the toilet. The joke being we have evolved to the point that our most basic human functions has become complex. https://sites.google.com/site/theageofplastic3d/2001s-zero-g...

Haywood reads anxiously! Memorable scene.
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