A note on their section on fire extinguishing - just about all aerospace fire extinguishing systems use agents with a fluorine based chemistry. Putting out a fire dissociates some of the agent, and in the presence of humidified air it recombines and forms hydroflouric acid, which will eat you from the inside out. So your air scrubbers had best do a good job at removing acid gasses.
It doesn't really eat you though: HF is so small that the problem is it just traverses straight through the skin into your blood and causes fluoridosis.
There's been more then a few metallurgy lab deaths because someone spilled a substantial amount of HF on themselves and didn't realize it.
Well genius are there other 20 year old reusable space craft that haven't turned to plasma while trying to re-enter the earth's atmosphere that I'm not aware of?
This seems like the only one, and according TFA, it sucks.
Exactly. They re-designed the tang and clevis joint so that the metal parts of the joint did not spread under gas pressure and the o-ring did not lose compression. They added a heater to ensure that the o-ring remained in it's usable temperature range. And added a superfluous third O-ring.
Speaking of which, has anyone ever adequately explained why Challenger's Right SRB joint temperature was measured as -13 deg C using infrared pyrometers, when the lowest ambient temperature that night was -5.5C, and the Left SRB was measured -4 C? What subcooled the right SRB?
Allan McDonald's "Truth, Lies, and O-Rings" is mandatory reading for anyone who wants to discuss the details of this particular bit of corporate and government malfeasance. It's 600 pages of technical detail and political intrigue. He suggests that a plume from a cryo vent could have impinged on the field joint and cooled the o-ring to lower than ambient temperatures. No proof though.
But the psychotic President was elected by popular vote, pushing the psychosis back to that level.
Perhaps one could say that this psychosis was introduced by people who were not themselves psychotic, but rationally pursuing their own goals spreading propaganda. That propaganda broke the ability of a large swath of the public to tell the difference between truth and fiction.
When I was a kid, I could hear the sound the of the flyback transformer on the CRT TV from anywhere in the house. None of the adults could. 15.7 kHz. Now obsolete both due to the lack of CRTs, and degradation of my hearing from heavy metal concerts and jet engine exposure.
Same here about the TV's flyback transformer. My parents always wondered how I could hear from down the hall (out of sight from the TV) when the horizontal hold or vertical hold went awry. :-)
If he was picking butts (heh) every day for 8 hours a day, he’d have to pick a butt every 10 seconds. That seems like an implausible amount of butt picking.
If you watch the video, you'll see he shows a many dozens all in a small area, just within quick pan of the camera. He can probably pick up one per second for several minutes. That, or scoop them up in a huge bunch with a little bit of dirt, and sift them later.
It's not that implausible.
He even says he initially expected it would take a few years to reach one million.
https://www.researchgate.net/publication/280646417_Acid_gas_...
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