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ArcticMyst Security by Avery

Space Discussion Thread

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From what I read you can store compressed hydrogen ( gas state ) in high pressure vessels just like other gasses up to 5000-10,000 psi but liquid hydrogen will boil off at normal atmospheric pressure, unless stored at or below 20.28K, −252.87 °C, −423.17 °F so I expect it goes into the rocket tanks very cold and it's well insulated, but I'm sure they pump it out until the next launch date in the case of a scrubbed launch.......Unless they have an external chilling loop, I can't find any details on that. However if they have a leak then pumping it out sounds right.

Edit: Here's something > https://www.sciencedirect.com/topics/engineering/liquid-hydrogen
 
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Ears and Eggs

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Ears and Eggs

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Live stream of the DART mission and the impact with asteroid Dimorphos scheduled for tonight.


 

WizardG

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Whether it goes up or goes bang, gonna be spectacular either way. If it works it's gonna cut the cost per kg to orbit by a factor of 10 or more. Revolutionary stuph.
 

Ears and Eggs

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gazer101

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Sadly the above said "fission" which means that no space agency will authorize near-earth use of the engine... it can still be useful for deep-space transfer burns but we really need fusion engines that don't leave a radioactive wake
 
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Sure fusion would be nice, but if a fission engine is available in 4 years and fusion is still decades away then I'm all for fission for the trips to Mars, the difference between 45 days and 7 months will be a game changing advancement, doesn't matter if they burn hydrogen, kerosene or hippy farts to get off the Earth.
 

Externet

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A few pages of a report for your own evaluation... If you want the rest, and is allowed to post, let me know. Please delete post if improper.

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