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Questions tagged [shielding]

Questions related to protecting craft from their environment. Should be focused on the protection aspect and not the managing the effects of said environment.

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47
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3answers
12k views

Why don't we shield existing CPUs from radiation instead of designing new ones?

I've just read this article about space-graded CPUs [1]. I am not a space expert at all but a question was born naturally: why don't we prefer to shield earth-designed CPUs (far less expensive) than ...
2
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0answers
64 views

How strong would a magnetic field have to be to protect interplanetary craft?

The following suggests that this is a possible idea to protect crew on interstellar space flight: Is NASA doing research on "mini-magnetospheres" to protect crew from radiation in space? ...
5
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0answers
61 views

Pycrete or Pycrete 2.0 Q Has there been any research for structures against radiation protection in space with Pycrete type material?

Background on Pykrete: Pykrete is a frozen ice alloy, originally made of approximately 14 percent sawdust or some other form of wood pulp (such as paper) and 86 percent ice by weight (6 to 1 by ...
5
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2answers
98 views

When a coronal mass ejection (CME) hits a spacecraft, from which direction will the particles come?

I have long assumed that when a CME (aka solar mass ejection, SME) hits a spacecraft, its particles will be coming in a straight line from the Sun. I've learned recently that it isn't so direct, and ...
2
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1answer
78 views

Could man-made, magnetic shields protect us from from sun's energetic particles from coronal mass ejections?

I read this in a published scholarly article: "...deploying a magnetic shield could enhance Mars' atmosphere and facilitate crewed missions there in the future..." It made me wonder if it is possible ...
18
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2answers
4k views

Should man-made satellites feature an intelligent inverted “cow catcher”?

Disclaimer: I have no formal education in science. Also, I'm a dummy! Locomotives usually feature a shield that deflects objects on a train's track. My understanding is that since satellites ...
2
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2answers
260 views

What is the shielding capability of liquid metal compaired to solid metal?

For simplicity, consider a spherical metal shape for shielding cargo/people behind. (The liquid ball is supposed to be between the Sun and the cargo. Not people inside it.) A problem I see is that it ...
6
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3answers
261 views

Can a flock of birds crash a rocket?

Has there ever been a situation when birds caused damage to a rocket? At what speed would birds be a problem? Could a rocket launch off water horizontally in stages?
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0answers
38 views

Water for shielding during space travel [closed]

Use less water for shielding during space travel by transferring water to the side of the craft exposed to the solar radiation source?
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0answers
44 views

Is it possible to “shape” area impacted by radiation shielding during interstellar travels? [closed]

If I have uderstood radiation/other shielding described in other questions correctly...it will be among other things provided by magnetic field(s) generated by superconductors. Is it possible to ...
1
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1answer
318 views

Liquid shield for spacecraft? [closed]

Could an alloy of hot or cold liquid metal be made magnetic by adding electricity to the molten ball to give it magnetic properties to wirelessly attach it to a space craft to use as a shield shown in ...
3
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1answer
215 views

ISS Destiny Module inner wall: thickness set by internal atmospheric pressure or by mass density needed for meteor shielding?

In their 2006 paper Christiansen et al. describe the "stuffed Whipple shield" wall of the ISS's Destiny Module. The outer skin, the Whipple shield's "bumper" layer, is a thin layer of aluminum (alloy ...
4
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1answer
242 views

What type of software is used to make radiation shielding simulations for use in Space or Mars?

Hopefully this is relevant to the board and doesn't get deleted. Quick background: In Thailand. Grad student, mechanical engineering, with very limited knowledge regarding nuclear or space radiations. ...
3
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0answers
66 views

Which is the best glass for shielding against radiations and impacts? [closed]

Which glass should be used for overcoming radiation and orbital debris? I have seen about monolithic glass and acrylic glass, which can be used for this purpose. Are there any others type which can ...
6
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3answers
243 views

Can you avoid the costs of cooling superconductors for magnetic shields by separating them from the spacecraft and using shades?

As the answer to this thread states, cooling superconductors in spacecraft is necessary because of waste heat from secondary systems and thermal radiation of the sun. The application in which ...
6
votes
1answer
244 views

3D Model of radiation in earth orbit?

I am trying to estimate required shielding masses to maintain a radiation level at or below earths average radiation of 3 mSv per year at different earth orbits (LEO, MEO, GEO and 50000 km+). ...
1
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2answers
239 views

Emergency Spacesuit Protection?

In an emergency how much and what kind of protection would a spacesuit provide protecting against an explosive decompression event in the habitat the wearer is in? Can air pressure be accumulated ...
1
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1answer
280 views

Would a Faraday cage made of gas block radiation?

What is best blocks radiation and is transparent as a gas? Would applying an electrical current through the gas increase the gas from blocking radiation on Mars? Radiation could be blocked by the ...
5
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2answers
1k views

Could ozone be used in a biodome on Mars?

How much ozone would it take to block solar radiation on Mars if chambered in double panned glass or material? Said $O_3$ would break down from the UV. Would applied electricity on $O$ and $O_2$ make $...
1
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4answers
383 views

What is currently used to protect spaceships from meteoroids?

What is used to protect a Mars or possibly interstellar spacecraft against meteoroids and asteroids? How risky it it to travel through space and does higher speeds equal more risk? Would a long ...
4
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3answers
2k views

Why can't permanent magnets be used for radiation shielding in space?

I've been reading a lot about concepts for protecting astronauts from Galactic Cosmic Radiation on interplanetary voyages. I've read about a lot of different ideas, but all of the ones involving a ...
1
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1answer
208 views

Using tardigrades as space shielding

Since tardigrades are almost extremophilic, and so are these, should we use them as shielding material? A thick enough layer outside the spacecraft will shield it and we may use breeding techniques so ...
2
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2answers
94 views

Is the amount of damage to humans due to x Sievert a function of exposure time?

After looking into the experienced radiation for certain space journeys, I was wondering wether it was correct to state that the amount of biological damage is a function of the exposure time for a ...
2
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0answers
100 views

Are artificial magnetic fields used or proposed to be used to shield astronauts from charged, high energy radiation? [duplicate]

If not for the earth's magnetic field our atmosphere would be bombarded by high energy plasma (ionized gas) from the sun and other space sources. Much of these particles have more energy than the ...
9
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1answer
539 views

How thick must a shield be to be better than no shield at all?

Below an answer to a recent question about shielding against radiation on a trip to Mars, there was this comment from dubu (emphasis mine): [..] For high-energy particles entering dense matter, ...
35
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2answers
9k views

Why can't we use the same radiation shielding in Mars that we used when going to the moon?

Note that this is somewhat related to this question but here I am specifically asking about the suitability of using existing shielding for Mars travel. This is about this article and video titled "...
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0answers
47 views

Radiation shield for Mars [duplicate]

Earth's magnetic field on its surface is 25 to 65 microtesla. Besides earth's atmospheric protection, majority of sun's harmful radiation on the earth is shielded by this small magnetic field. Such a ...
1
vote
1answer
121 views

Could a Sun shield keep a rover cool daytime on Mercury?

If a rover on Mercury "roves" only at night when the surface is freezing cold, and before dawn unfolds a Sun shield of a few square meters above itself, under which it stays put all day. Would the ...
6
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1answer
1k views

Is NASA doing research on “mini-magnetospheres” to protect crew from radiation in space?

The Phys.org article NASA proposes a magnetic shield to protect Mars' atmosphere says: ...Dr. Jim Green – the Director of NASA's Planetary Science Division – and a panel of researchers presented an ...
2
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1answer
142 views

Can Li-ion batteries replace parts of the physical structure of a spacecraft, such as the hull of a crewed spaceship?

Batteries contain metals with some structural rigidity themselves, and need encapsulation anyway. Could the batteries a spacecraft needs be used to build part of the physical structure, such as the ...
12
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3answers
551 views

Would a Europa lander need radiation shielding similar to Juno?

Jupiter has a very intense radiation field, and thus spacecraft going to study it need heavy radiation shielding, such as Juno's radiation vault. This protects the delicate instruments and ...
2
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1answer
324 views

How much material AND energy are needed to protect a spacecraft from radiation as well as the Earth does?

There's enough atmosphere to produce 1 bar of pressure at sea level, and I believe from playing Universe Sandbox, a .320 Gauss magnetic field on the Earth. Maybe some portion of that would be enough ...
3
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2answers
151 views

Could Solar Cells provide Neutron shielding?

In any (deep) spacecraft, radiation shielding is paramount. Neutrons and gamma rays can only be stopped by putting mass (or distance) between source and target. It seems that one should put more ...
9
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2answers
640 views

Orion Project (NPP) Pusher Plate computer models and survivability?

Does anyone know of any modern (1990's - present) computer modeling of the Orion pusher plate and its reaction/survivability to repeated plasma impacts? Regarding the 1950s/1960s Orion Project using ...
9
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2answers
2k views

Would a nuclear propelled spaceship still need a storm shelter?

Assume you have a sophisticated nuclear (thermal or whatever comes to mind) propelled spaceship for your summer vacation on Mars. Half way there Houston calls and informs you about an inbound solar ...
5
votes
1answer
744 views

Suitability of Hydrogenated Boron Nitride Nanotubes for structural and shielding elements of spacecraft

I'm writing a novel set 100+ years in the future. I'm looking into future materials from which spacecraft may be built. I read an article about Hydrogenated Boron Nitride Nanotubes. I'm interested in ...
2
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2answers
216 views

Is exposure to cosmic radiation more dangerous on some body parts than on other?

Radiation causes genetic mutation and every (human) cell in our body have the same genes. But on Earth we don't get cancer as often in the foot as in the genitals or in the brain. Some parts of our ...
10
votes
1answer
868 views

Space Station Battle: Could the Almaz gun depressurize the ISS?

Background The second Soviet Almaz military space station both had and tested an externally-mounted autocannon, specifically a Rikhter R-23 (according to some sources). It had 32 rounds of ...
14
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4answers
3k views

Could an Apollo crew have been killed by Solar radiation?

The Sun throws lots of high speed protons around. Especially during its sudden and short intensive "events". Much of that is blocked by Earth's magnetosphere and atmosphere. But astronauts work ...
3
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2answers
436 views

Can a column of water pointed at the sun be used as a shield from solar flares?

There is an idea to use shadow radiation shielding for deep space craft to protect the crew in case of a solar flare. Will it work, and will it save mass?
3
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1answer
503 views

How heavy does radiation shielding have to be for a nuclear power plant on a crewed spaceship?

How important is the mass penalty for shielding when using nuclear power on human space missions? In addition to solar and cosmic radiation, living next to a nuclear reactor large enough to support a ...
8
votes
1answer
155 views

Can the direction of a solar storm be predicted near Earth? Will it come from one direction?

So you are in a high orbit, or Lunar orbit, or at an EML point, and a solar proton event is on its way. Does the Earth's magnetic field make it difficult to predict the direction of impact on your ...
6
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1answer
1k views

Choosing thickness of a Whipple shield

What are the calculations involved in choosing the thickness of a micrometeoroid shield during the tradeoff study phase? Where can I find publicly available data on the distribution of micrometeoroid ...
9
votes
1answer
167 views

Shape of shielding for a tidally-stabilized LEO space station

Let's say that we're going to seriously shield a manned space station (to the tune of 1-2 m thickness) in LEO so that radiation doses are a reasonable multiple of background on Earth. Let's also ...
5
votes
2answers
696 views

Is a ball of ice practical as reaction mass and forward shielding?

There have been several hard science fiction stories where sheets or a ball of ice is used on a spacecraft. The function is usually as forward shielding against dust and small debris. Is this ...
31
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3answers
32k views

How much power would a spacecraft's magnetic shield require?

I've read over the decades that a magnetic shield might protect a spacecraft from cosmic radiation. Its a fascinating idea that might only be theory or science fiction at the moment. In regards to ...
12
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1answer
187 views

Does the hull of a spacecraft acquire a charge during its rapid ascent through Earth's atmosphere?

Known fact: Heat causes a charge to accumulate on the hull of a craft at reentry. Questions: Does the hull acquire a charge during the course of its ascent too? What magnitude is this charge? (My ...
38
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4answers
4k views

Are there any safety procedures in place on the ISS in case of puncture?

The ISS is a huge (relatively) satellite which, according to NASA, is longer than a football field. I am curious about what would happen if the station's skin was punctured - perhaps by a careless ...
16
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4answers
3k views

Radiation shielding magnetic or mass, which is more efficient?

As I understand it; being away from earth subjects you to significant health risks from radiation. On Earth most of this risk is deflected by Earth's magnetic field. I did not find a reference but ...
8
votes
1answer
150 views

How are current spacecraft tested for their impact durability?

I imagine the lift-off process itself puts a large amount of stress and strain on the rockets materials. With the amount of debris up in space there is always the risk of rocks to collide with the ...