Questions tagged [artificial-gravity]

Artificial gravity is the varying (increase or decrease) of apparent gravity via artificial means, particularly in space, but also on Earth.

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14answers
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Why are there no spacecraft rotating for artificial gravity?

Spacecraft rotating to generate artificial gravity through "centrifugal force" are commonplace in science fiction but not in reality. Considering the problems in long missions (among others: bone loss,...
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Could an aircraft ever simulate Martian gravity perpendicular to the aircraft's floor?

Suppose I designed a complex, self-contained, robotic system to harvest and convert Martian atmospheric CO2 and ground H2O into rocket fuel (CH4 + O2) and after exhaustive computational fluid dynamic (...
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Mitigating nausea when generating artificial gravity by centrifuge

When utilizing "artificial gravity" generated through a rotating structure using centripetal force, i.e. a centrifuge, is there a minimum diameter or some other attribute that causes or helps ...
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1answer
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What would the size and rotation of a station need to be to produce 1g gravity from head to toe?

A structure with a radius of 224m rotating at 2 rotations per minute will generate 1g of force on the inside (spincalc). It will generate that force on the feet, but as you travel up the body the ...
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4answers
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Would a ball bounced in a centrifuge return to the floor?

In other words, does the centrifugal force inside a centrifuge only work to simulate gravity when an object is "attached" to the reference frame inside the centrifuge? 1G at sea level is normally ...
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5answers
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How can you make a vacuum proof rotatable seal?

Many systems have been discussed where you have a rotating spacecraft for artificial gravity purposes, with a portion of the spacecraft that doesn't rotate, perhaps the engine for instance. I've been ...
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2answers
1k views

What is the gravity inside a rotating cylinder?

There is the popular question “What is the gravity at the center of the Earth?”. And the answer is zero, because the forces cancel out. And then the gravity increases linearly as you move to the ...
10
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1answer
722 views

Radial variation of atmospheric pressure in rotating O'Neill cylinder-like ship? (Rendezvous with Rama)

Sir Arthur C. Clarke was a science writer as well as a prolific writer of science fiction (including hard SF*), and his stories usually had a substantial footing in science. His book Rendezvous with ...
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2answers
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Could magnetic “boots” be used to simulate the effects of gravity for asteroid ships?

I have been to the Wikipedia pages on alternatives to gravity, and found the usual alternative forces, with the potential for magnets and the specious Russian claims, but I'm wondering why not just ...
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4answers
18k views

Why can't spaceships just accelerate to create gravity?

The answer to What happens to an astronaut who's floating in a spaceship (in space) when it begins to move? is that we can create g-force just by accelerating. So then why go all the way to create ...
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How would a centrifuge module's berthing system work on the ISS?

Although it's not very likely to be built, the idea of a centrifuge module attached to the International Space Station is taken seriously, and at least two have been proposed. I have in mind the ...
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What stability issues plague long artificial gravity cylinders?

The Kalpana One presents itself as a practical modern design for a space station with artificial gravity. One of the tweaks that it made was to limit the length to diameter ratio. This leaves it ...
10
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1answer
927 views

Can humans play basketball in simulated gravity?

Rotating a spacecraft to create a simulated 1 g should cure most medical problems with microgravity. But can one play ball? A rotating spacecraft with several 10s or 100 meter to the center of ...
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3answers
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Is artificial gravity feasible in manned long-term space exploration?

We know that it is possible for humans to stay physically in shape during long term space missions (see for example Valeri Polyakov who stayed on Mir for more than 14 months for one trip). However, ...
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2answers
878 views

Would a rotating spacecraft disorient those looking out of it?

I'm curious, if a space station were rotating to produce a gravity-like force, would being able to see large portions of the sky disorient human beings? Is there any research on the maximum rotation ...
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0answers
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Proposed methods to use electromagnetic force to replace gravity beyond boots?

I have been wondering if there have been any serious proposed methods to try to recover some functions of gravity with electromagnetic forces for astronauts in space. Fields generated in the floor of ...
8
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665 views

What do ISS astronauts do while the ISS gets reboosted? [duplicate]

For its orbit to not decay, the ISS reboosts itself to higher altitudes once in a while. During the reboost, I wonder how much gravity is felt by the astronauts onboard, and what do they do to avoid ...
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1answer
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Can birds fly inside an O'Neill cylinder?

We know that birds can fly in a weightless environment from experiments with pigeons on the Vomit Comet. But on a very large O'Neill cylinder space station, could they fly the same way they do on ...
7
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1answer
184 views

How might artificial gravity experiments be conducted to determine adaptation in mice?

Astronauts in microgravity for extended periods experience a number of maladaptations, including bone loss, muscle atrophy and muscle mass loss, redistribution of fluids, and reduction in immune ...
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4answers
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How does centripetal force produce artificial gravity

I think I lack a fundamental knowledge of physics to answer this myself. In many sci-fi stories, there is a rotating spaceship that gives the feeling of being pulled "downwards" against the sides of a ...
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1answer
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Artificial Gravity on board the ISS and its derivatives

Was the implementation of artificial gravity ever seriously considered for use on board the ISS and its derivatives? If not, why?
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1answer
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Alternatives to centripetal force and constant acceleration to simulate Earth-like gravity

This is follow-up to @Erik's answer to the question Is artificial gravity feasible in manned long-term space exploration? I'm curious, whether there's any alternative methods to simulating effects of ...
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6answers
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What would a physically correct term be for “artificial gravity by rotation”?

Microgravity causes some health concerns in the long run, so it has been proposed that one could create what is often called "artificial gravity" by rotating the space station. This is not strictly ...
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0answers
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Why is artificial gravity not included on space stations? [duplicate]

I'm wondering why artificial gravity is not included on the ISS, or on the currently planned OPSEK. There are long-term health effects of weightlessness, which would be avoided, using artificial ...
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2answers
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Is it possible to create artificial gravity in a habitat in space, or on another planet or moon without spinning the hull of the habitat

I've seen many designs for creating artificial gravity within a habitat in space by rotating the habitat about a central axis. With today's science, can artificial gravity be generated in a vehicle, ...
7
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2answers
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How much gravity is actually needed to avoid serious health consequences?

Most discussion I have read about using tethers and rotation in order to simulate gravity on spacecraft, talk about simulating Earth's gravity - 1g or 9.8m/s^2. Baked into the 1g figure is the ...
6
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3answers
220 views

Creating your own artificial gravity by running. (Part 1 - the basic idea)

The main motivation for artificial gravity is the astronauts' health Usually artificial gravity is supposed to work by rotating the spacecraft. See diagram A. Wouldn't it be much simpler to simply ...
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1answer
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In what way is artificial gravity expected to avoid/reduce bone loss?

It's my perception that discussions of the use of artificial gravity for manned deep-space travel missions are primarily centered on avoiding bone loss. Am I right so far? Microgravity seems to be ...