@simon b said:
Liam, these are excellent models.
I like the solar explorers especially. I am working on similar stuff for a game idea.
Check out this site for some in depth technical info for developing realistic spaceships.
I think the maximum speed for generating 1G artifical gravity by centrifuge is 2 revolutions per minute (any faster and your crew would start puking due to awareness of spin: the coriolis effect). This rotation speed for 1G requires a minimum diameter of nearly 500 metres - half a klik! A slower spin would need a larger diameter to maintain 1G - if you see what I mean.
You could have spins at equivalent martian or lunar gravities though.
I'm a fan, keep it up.
If you want to have ground-gripping joe-smoe man-on-the-street untrained people in absolutely no danger of spin nausea (i.e. 1 RPM), you'll have a microscopic 0.02g
If you don't mind if the ground-grippers might initially have some nausea but get over it, you can go up to 3 RPM and have 0.2 g (about Lunar gravity)
But if you have trained astronauts who have undergone spin acclimation, you can crank it up to a full 6.5 RPM and have 1.0 g.
(5 RPM will give you 0.5 g)
These calculation are correct but it all depends on your diameter form the center rotators. As I am only 70ft from the center in the modules I have made so far these calculations are relevant to me!
Basically you can work out the spin ratio for any size module using this equation, Its straight from NASA and has been researched:
Ca = 0.011 * Cr2 * Cl
Cl = Ca / (0.011 * Cr2)
Cr = sqrt( Ca / (0.011 * Cl))
where
Ca = centrifugal artificial gravity acceleration at point X (m/s2)
Cl = distance from point X to the center of rotation (m)
Cr = rotation rate at point X (rotations per minute)
Remember that 1.0 g is 9.81 m/s
Notice that as point X is moved further from the center of rotation the artificial gravity increases.
To have a comfortable 1G you would need a rotating section of at least 300ft. that is it would be acceptable to any normal person without prior training.