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They mentioned something about the suit pressure for one of them being lower than expected and asked them to check for "white teeth" on 3 zippers, which they re
by orisho 6y ago
They mentioned something about the suit pressure for one of them being lower than expected and asked them to check for "white teeth" on 3 zippers, which they reported seeing on all 3. Can anyone explain what that is?
- scrumbledober 6y agoSounds like when the zippers are fully closed the white teeth of the zipper should be covered by the seal around the zipper. If any teeth are visible the seal is not complete.
- hinkley 6y agoOr perhaps the seal is behind the zipper and high contrast.
- hinkley 6y agoI thought maybe they put some sort of chemistry into the zipper to detect gasses and change colors, but I can’t get google to cooperate. And what gas in the suit isn’t already in the cabin?
- rtkwe 6y agoThey did a leak check and one of their suits wasn't 100% sealed so it had a lower pressure differential to the capsule during their tests meaning there was a seal that wasn't completely sealed. The teeth thing is that they use different colored teeth on zippers so they can see visually when they've closed the zipper fully. They said it was still within the margin of keeping them protected during an emergency though.
- anewdirection 6y agoIf the suits are pressurized more than the environment, escaping gasses often cause moisture or frost to form at the point of escape due to differential cooling condenstion. Could that be what they were seeing?