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How An Astronaut Nearly Drowned During a Space Walk
Hugh Pickens DOT Com writes "About 44 minutes into a 6.5-hour spacewalk last July, Italian astronaut Luca Parmitano noted that water was building up inside his helmet – the second consecutive spacewalk during which he reported the problem. As Parmitano worked his way back to the air lock, water covered his eyes, filled his ears, disrupted communications, and eventually began to enter his nose, making it difficult for him to breathe. 'I know that if the water does overwhelm me I can always open the helmet,' wrote Parmitano about making it to the airlock. 'I'll probably lose consciousness, but in any case that would be better than drowning inside the helmet.' Later, when crew mates removed his helmet, they found that it contained at least 1.5 quarts of water. In a 122-page report released Wednesday, a mishap investigation board identified a range of causes for the near-tragedy, including organizational causes that carried echoes of accident reports that followed the loss of the shuttles Challenger and Columbia and their crews in 1986 and 2003. Engineers traced the leak to a fan-and-pump assembly that is part of a system that extracts moisture from the air inside the suit and returns it to the suit's water-based cooling system. Contaminants clogged holes that would have carried the water to the cooling system after it was extracted from the air. The water backed up and flowed into the suit's air-circulation system, which sent it into Parmitano's helmet (PDF).
The specific cause of the contamination is still under investigation but investigators also identified deeper causes, one of which involved what some accident-investigation specialists have dubbed the 'normalization of deviance' – small malfunctions that appear so often that eventually they are accepted as normal. In this case, small water leaks had been observed in space-suit helmets for years, despite the knowledge that the water could form a film on the inside of a helmet, fogging the visor or reacting with antifogging chemicals on the visor in ways that irritate eyes. NASA officials are not planning on resuming non-urgent spacewalks before addressing all 16 of the highest priority suggestions from the Mishap Investigation Board. 'I think it's a tribute to the agency that we're not hiding this stuff, that we're actually out trying to describe these things, and to describe where we can get better,' says William Gerstenmaier, associate administrator for NASA's Human Exploration and Operations Mission Directorate. 'I think that's how we prevent Columbias and Challengers.'"
The specific cause of the contamination is still under investigation but investigators also identified deeper causes, one of which involved what some accident-investigation specialists have dubbed the 'normalization of deviance' – small malfunctions that appear so often that eventually they are accepted as normal. In this case, small water leaks had been observed in space-suit helmets for years, despite the knowledge that the water could form a film on the inside of a helmet, fogging the visor or reacting with antifogging chemicals on the visor in ways that irritate eyes. NASA officials are not planning on resuming non-urgent spacewalks before addressing all 16 of the highest priority suggestions from the Mishap Investigation Board. 'I think it's a tribute to the agency that we're not hiding this stuff, that we're actually out trying to describe these things, and to describe where we can get better,' says William Gerstenmaier, associate administrator for NASA's Human Exploration and Operations Mission Directorate. 'I think that's how we prevent Columbias and Challengers.'"
Later, when crew mates removed his helmet, they found that it contained at least 1.5 quarts of water.
Or at least 1.5 liters of water, if you're Canadian.
#naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
at least it wasn't a failure of the space suit's urine collection system...
Was that actually a good summary for once, or the entire article!
I guess it stops the usual misinformed, ignorant posts based on a couple of sensationalist headline based loosely upon something that was slightly related to the article from being posted.
A quart is a quarter of a gallon, not a quarter of a pint. Now pint off, you tablespooner.
#naabhaprzrag, #sverubfr-000, #agi-fcbafberq, negvpyr[pynff*=' negvpyr-ary-'] { qvfcynl: abar !vzcbegnag; }
Couldn't he have, you know, drank the water that was building up?
Chuuch. Preach. Tabernacle.
Maybe it's an African or European pint.
Ask a King. They know such silly things...
Given the fact that astronauts and cosmonauts have only died trying to launch from, and land on, the Earth, space itself seems surprisingly safe.
It's probably because all the excitement and explosions occur at the taking off and landing, and most of our actual time in space is spent traveling in big circles.
'I think it's a tribute to the agency that we're not hiding this stuff, that we're actually out trying to describe these things, and to describe where we can get better."
Except you were hiding it, for years. You only revealed it when it caused such a crisis that it could not longer be hidden.
"normalization of deviance" is what caused the problems. I can see fundamentalists having a field day with that one.
Actually looking directly at the problem is the only way to fix it ultimately.
I like Bob Lewis' take on investigations in a blog he wrote about NASA vs other government Agencies.
http://www.issurvivor.com/shop...
Can't read. TWO FUCKING THREADS UP! jackass asshole fucktard.
There's not many minutes of difference in the timestamps of the two similar questions. It's possible that GP was reading the thread before the first question was posted and didn't refresh the page to find out the duplicate before posting his own.
Stupid people on the internet again. Hey, why not just bring up google and type in "convert 1.5 quarts to quatloos" or whatever your preferred method of measure is? Mandarin is the most common language on Earth. Why aren't we typing in a sensible language like Mandarin?
Idiot.
[John]
Shit better not happen!
Your recollection doesn't match mine, and I've spent decades studying the space program. The loss of Challenger comes close, but even then the engineers had been complacent about joint blow-by and O-ring erosion until the eleventh hour - which contributed in a large part to managements confusion and distrust.
I know there's a Cult Of The Engineer here on Slashdot, but it's badly misguided. Engineers are human, and they do fuck up.
Due to surface tension, water will flow along and hug a surface unless disrupted. So it does not have to fill the helmet, but just start crawling along the face into the nose and mouth. I've seen the micro-gravity video of someone slowly squeeze a water-full washcloth and the sheet of water crawl up his arm.
I believe you're looking for a "Library of congress" which is generally agreed to be larger than a barrel.
Not all gallons are the same. Muros must have thought this was obvious. I thought it was obvious.
If two people independently read the same meaning in a message you've written, it's unlikely the problem is with the reader.
Only true with a small audience. When read by thousands, the two that could not figure it out are to blame.