Leo 09, 02 / Jun 26, 18 16:13 UTC

AG..  

Some basic thoughts about Artificial Gravity that kept me awake last night. To have real gravity we would have to find a cold core of a planet or moon and as we have not seen a thing like that in our solar-system yet we have to go for replacements.
We have 2  things that come close, 1 is a spinning part of a space-station the 2th is magnetism. We can use both in combination as backup systems or apart where the best fits.
For magnetism we can use the ship as iron-like attractor and make our suits magnetized. This can be done with patches or woven in the material. The other one is also possible whereby we could make the ship electrical magnetized and our suits as iron attractor. We could also make both magnetized for stronger results where needed and add extras like magnetized boots like in the film passengers and others.

Grtz, Dirk.

  Last edited by:  Dirk Baeyens (Asgardian)  on Leo 09, 02 / Jun 26, 18 16:18 UTC, edited 2 times in total.

Leo 09, 02 / Jun 26, 18 19:58 UTC

Centrifugal force, i.e. spinning. Magnet boots (and apparel) are for reliable surface contact only.

Leo 09, 02 / Jun 26, 18 20:18 UTC

Magnets could be useful on the exterior of space stations so people can go out and repair without risk of being lost forever.

But magnets wont fix the problem of bone loss, so we will need rotating stations. Since too many rotations in a short amount of time can cause issues due to the Coriolis effect, we will need fairly large radii for each station. Ringworld anyone?

Leo 09, 02 / Jun 26, 18 20:47 UTC

Ringworld sounds good. We could use debris for some first pieces. We could do it in parts, lets say every decade a large piece to connect to the growing ring. The Ring of Asgardia.

Leo 09, 02 / Jun 26, 18 20:52 UTC

About bones.. we would need a counter action to the growth of bones.. elastics in the suit while at work for example?


Leo 09, 02 / Jun 26, 18 21:48 UTC

This is actually something I have been thinking about for the past few days. While a ring world would work, much like a "flat earth" in a sense, the size is what actually brings up the issues to be able to counter earths gravity and not fall back down. We would need an extremely dense and heavy core, but the world itself would need to be extremely light to be able to transport mass amounts into space. 


If I remember correctly, for the approximate size we would need to build, we would have to be somewhere around the Moons orbit, which would pose an issue just due to the fact that we do not want the moon to crash into us.

Leo 09, 02 / Jun 26, 18 22:13 UTC

Or in between the two as a transit.

Edit: material from earth and the moon.

  Last edited by:  Dirk Baeyens (Asgardian)  on Leo 09, 02 / Jun 26, 18 22:14 UTC, edited 1 time in total.

Lib 03, 02 / Aug 15, 18 10:41 UTC

A little additional help could be airflow. Blowing from top to bottom to simulate a few percentages of gravity. If we would create something with many little percentages we could also get a big percentage of gravity at the end. And in time add and/or replace things to get a higher percentage.


Lib 04, 02 / Aug 16, 18 08:38 UTC

Depending on your definition of "large", definitely if that definition aligns with the kinds of dimensions quoted in this thread, a spinning ring-type space station wouldn't actually need to be THAT large to accommodate most humans, or, at least, provide an environment which they could adapt to. According to this compilation of historical studies on the subject (http://www.artificial-gravity.com/Dissertation/2_2.htm) a ring with a diameter of little more than 200m (about twice the length of the ISS - https://www.nasa.gov/content/international-space-station-length-and-width/#.W3Uvc3UzaV4) seems like the sweet spot.

This would provide an environment where you could approach one full g (which might not be needed to sustain human health) while approaching 3 RPM, which ground-tests (which are obviously a flawed analogy to the space environment) suggest is where average people begin to feel the effect of variable gravity (the difference in gravity from your head to your feet).

This would provide a lot of room for miscalculations and unforeseen factors, due to the fact, as noted in the research compilation, the effect of angular velocity seems to be a good deal more tolerable in space than on Earth, where most of these experiments have been conducted.

  Last edited by:  Christian Ohlendorff Knudsen (Asgardian, Candidate)  on Lib 04, 02 / Aug 16, 18 08:54 UTC, edited 2 times in total.
Reason: Added section on the difference in the effects of angular velocities between Earth and space.

Lib 06, 02 / Aug 18, 18 15:57 UTC

as a station, the spinning would be a good idea, but what about smaller ships? Doesn't seem very practical to just float through space spinning. Would make me dizzy lol I know it is fiction, but In Star Trek, they use electrical floor panels to generate gravity. Is there any kind of realism to this? Is it even possible I wonder?

Lib 06, 02 / Aug 18, 18 18:25 UTC

Makes me think about some kind of whole suit underwear with magnetic patches so that we have to continuous use our muscles to free our selfs from the metallic structure around us that can also be magnetized for a stronger effect.


  Last edited by:  Dirk Baeyens (Asgardian)  on Lib 06, 02 / Aug 18, 18 18:27 UTC, edited 1 time in total.