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Nov 9, 02 / Nov 13, 18 17:21 UTC

Shielding in space  

Hello all. 

We all know space is dangerous. One of the dangers you don’t immediately notice is space radiation. 

Let’s consider we are building a large base above our planet, a space station. Fairly large enough to host 5000 people or so, gravity problems aside, how would we effectively shield this station from radiation? Considerd with our present engineering tech. I have heard from water shielding, but I don’t know the details and size of such shielding? I imagine you would a huge amount of water around the station. 

Any ideas? Shoot 😁

Nov 9, 02 / Nov 13, 18 22:38 UTC

I've been thinking about that too, for the moment i see 2 solutions, reflecting and absorbing. The ideal structure would be a mirror sphere with protective layers inside. In fact we should make an inverted earth, inside out. Outside metal, then fluid, and then heavy gas as part absorber and light gas as the most inner as atmosphere. Just an idea.

  Last edited by:  Dirk Baeyens (Asgardian)  on Nov 9, 02 / Nov 13, 18 22:39 UTC, edited 2 times in total.

Nov 12, 02 / Nov 16, 18 20:18 UTC

Just had an other idea. Maybe we could also use in combination a magnetic field like the earth vs sun. The outer metal layer could be magnetized.

  Last edited by:  Dirk Baeyens (Asgardian)  on Nov 12, 02 / Nov 16, 18 20:19 UTC, edited 1 time in total.

Nov 22, 02 / Nov 26, 18 17:24 UTC

The idea of an artificial magnetic field to protect the Station is not a bad idea. A quick search gave some very interesting articles in that regard. Especially the Articles about the Mini-Magnetospheres. If i´m not mistaken, such shields should be feasible with our current tech. Now combine it with modular and exchangable Armor, as described above, would be an interesting concept.

Edit:
What gives me a Headache is the powerconsumption of such a shield....

  Last edited by:  Asgardian 1149870 (Asgardian)  on Nov 22, 02 / Nov 26, 18 17:28 UTC, edited 1 time in total.

Nov 23, 02 / Nov 27, 18 10:03 UTC

РЕАЛЬНО что либо существенное можно достигнуть только тому , кто имеет ДОСТУП в космос.

На Земле сколь не фантазируй толку не будет , только ТАМ , в КОСМОСЕ можно проверить и сделать какие то выводы .

А тут , на Земле , это просто СОСТЯЗАНИЕ в изворотливости ума и мышления .Ерунда все это .Да и тема пустая. ТУТ на Земле не решишь этот вопрос .

Dec 18, 02 / Dec 20, 18 07:58 UTC

Could artificial orbit help, like one on planet earth ?

Dec 18, 02 / Dec 20, 18 09:52 UTC

Magnetic field cannot protect a human team against space Radiation, since the ratiation has no a charge. It shields against space Protons only. For gamma-Radiation we are in need of the such protection as nuclear power plants: concrete, metall or water. The water is a bad solution for space conditions as the micro-meteorites could perforate the water tank. So, concrete or metall.

Dec 23, 02 / Dec 25, 18 06:06 UTC

We could use solar arrays to turn the sun energy into computing power in space and in the mean while shield earth a few percentages from the sun.

Grtz, Dirk.

Jan 3, 03 / Jan 3, 19 12:32 UTC

Hi Glenn,

Great technical question!

The only real solution to space radiation is mass shielding. There may be a possibility in time to develop a magnetosphere like the earth, but that would require obscene amounts of energy. 

There are 2 sources of radiation: from the sun, and the cosmic background. You might think the solar radiation could be blocked by a single shield between the station and the sun, but actually it will come at you from all directions except behind as the particles move in spirals. 

But don't worry too much about all that yet! In Low Earth, Equatorial orbit the radiation dose is minimal enough that shielding is unnecessary. Al Globus' design for a habitat in LEO [1, figure 1 on p6] shows this with data from the ISS. The mass of a habitat in ELEO is limited by the structural requirements, not the need for shielding. If there are plans to move out to L5 or beyond, shielding can be added in situ. You'd need 7 tons per m2 of water or polyethylene (the basic packaging plastic) or 10 tons of moon dirt [1. Table 5 on p16]. 

That design makes a lot of sense to me and seems to be feasible, its definitely worth a read! I'm very keen to work on it as a home in the sky for Asgardians!


Jan 7, 03 / Jan 7, 19 14:25 UTC

Hello Everyone,

be a great to can be used that radiation, like a special generator who absorbing that radiation and transfer it at energy for engine or something else...

I don't know how many of you thinking about some machine who clear our orbit from older satellites, because many of this satellites is unusable and it's dangerous. If all unusable satellites be start to down at the Planet Earth be catastrophic.

Feb 15, 03 / Feb 12, 19 15:34 UTC

Dear Asgardians,

cosmic rays are mainly protons, electrons and positrons, all charged, but we have neutrons too.

In order to limit charged particles spectrum of cosmic rays the Space Arks need active and passive shiledings.

European Commission study shows an LHC-ATLAS insipred magnetic shield can be used:

https://www.frontiersin.org/articles/10.3389/fonc.2016.00097/full

Passive shielding will be needed to shield neutrons using graphite, boron rich composite materials.

Best regards,

Enrico Billi