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In Arthur Clarke's and Gentry Lee's Rama series, human beings are submerged in tanks of water and spend most of the day subjected to 10G acceleration for hours at a time.

My question is - does water (or any liquid) actually make any difference in such cases?

Being submerged in water would certainly dampen some sudden motions, but when you are accelerated at 10G, your organs is also accelerating at that rate, regardless of your surroundings. Your blood would still pool to whatever was the "bottom".

I know that pilots use pressure suits to help them stay conscious during high G maneuvers, but this lasts up to a few minutes and those suits actually put pressure on lower body to squeeze the fluids out, water tank cannot do that. Or am I wrong?

closed as off-topic by Valorum, Politank-Z, FuzzyBoots, Radhil, alexwlchan Oct 10 '16 at 18:51

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    Looking for a real world validation of a work of science fiction is off-topic here. You may be on topic elsewhere. – Chenmunka Oct 10 '16 at 18:00
  • NASA has experimented with high-G environments and their conclusion was that it's certainly possible for a human to sustain 10 Gs without passing out if sufficiently restrained and kept in a prone position with the away from the direction of travel. ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19980223621.pdf Being in water wouldn't be especially useful unless the ship was turning and banking since the major stress would be on the lungs and heart, not the risk of breaking bones. Theoretically, liquid breathing would allow much much higher Gs to be sustained. – Valorum Oct 10 '16 at 18:06
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    @Chenmunka - Indeed. Since it happened in the novels, we know that it's possible in the fictional world of Rama. Whether that translates into reality isn't within the scope of this site. – Valorum Oct 10 '16 at 18:08
  • Suggestion: try space.stackexchange.com and ask about the technology without the fictional element. – Organic Marble Oct 10 '16 at 19:22

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