The general gist: for lowish accelerations like 2 G, you don't need to do anything special to the human body, just make sure you're lying either prone or on your back, and remaining disciplined about your breathing.įor higher Gs, like 5G+, you need to carefully manage the human body, putting it in a gel-like cocoon of similar density, and substituting air for a breathable liquid.
You can find more information than you ever wanted at Projectrho on this topic.
SWINGSET NEGATIVE G FORCE HOW TO
Ignoring the major point that human tolerance of G forces is not the limiting factor on space travel, plenty of thought has been made on how to counteract G forces, not least by 60s sci-fi writers. Other than science fiction, there is no known technology that could take humans beyond the solar system. There are some promising high thrust / somewhat high specific impulse nuclear technologies that might be useful these are mired in politics. Ion thrusters are in use now, but none are quite ready for prime time when it comes to human spaceflight. There are some promising low thrust / high efficiency (high specific impulse) technologies such as ion thrusters that might help humans get beyond the Moon. The chemical engines currently used to propel spacecraft on interplanetary trajectories coupled with the tyranny of the rocket equation are the key reasons rocket cannot sustain high accelerations for an extended length of time. Just a few hundredths of a g of sustained acceleration would cut the trip time to Mars down to a week or so. The spacecraft then coasts all the way to Mars. It instead takes several months to get to Mars because the rockets used to get there only fire for a few minutes. If a rocket could sustain 1 g acceleration for a bit over a day, we could go to Mars in a bit over a day. The problem isn't so much that humans cannot sustain high G forces for any extended length of time: The problem is that rockets cannot.
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