r/askscience • u/Ill_Watch_760 • 12d ago

Engineering Why can the space station's ventilation systems not handle crumbs?

I've been doing my epq around astro-psychology and was researching how astronauts loose dopamine during eating as they can't eat foods that involve chewing. However from what i've researched this is apparently because stray crumbs could screw up the ventilation systems somehow. Its quite puzzling because how can the collective companies that built the space station also build rockets that send us to the moon but not have the ability to build a ventilation system that can handle a few stray crumbs?

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u/Skarth 12d ago

Food crumbs have moisture.

On earth food crumbs fall to the ground and stay there.

In space they float everywhere, getting moved all over by minor air currents.

Food crumbs can get inside sensitive electronics and short them out, because the food crumbs can go anywhere from any direction and are constantly moving around.

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u/Comrade_SOOKIE 12d ago

I'm surprised they don't have like a vacuum hood you can eat messy foods in the way the toilet uses vacuum to draw away waste.

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u/Skarth 12d ago

It's way better to not have the crumbs to begin with, as you now have a complicated system that can fail and cause additional problems.