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How does artificial gravity work?

Krypss

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POSTS: 101

Report this Apr. 23 2005, 7:20 pm

I found this a couple of weeks ago...

Star Trek Artificial Gravity

Since the time of the first orbital research stations in the Sol system, the difficulties as well as benefits presented by micro-gravity situations have been exhaustively documented. The crews of the first true human-built interstellar craft of the twenty-first century coped with acceleration and Zero-G coasting mission segments through the use of rotating centrifuges, acceptable solutions for the day.

Humanoid organ systems require gravitational and electromagnetic fields to insure proper cellular growth and viability, simulating the natural conditions present on most Class-M worlds. Low-level field devices simulated the planetary electrical and magnetic energy, and descendants of many twenty to thirty year flights arrived in a healthy state,

The general planform of the Galaxy class starship returns to a more natural existence, in that people are free to move about on planar surfaces with a constant gravity holding them to the deck. Aboard the starship, this is accomplished through the use of a network of small gravity generators. The network is divided into four regions, two within the saucer module and two within the battle section. All four work to maintain the proper sense of down, and are also actively tied to the inertial dampening field system to minimize motion shock during flight. The two saucer module gravity networks each support 400 generators; those in the battle section each support 200. Fields overlap slightly between devices, but this is barely noticeable.

The gravity field itself is created by a controlled stream of gravitons, much like those produced by the tractor beam. In fact, the basic physics is the same. Power from the electro-plasma system (EPS) is channeled into a hollow chamber of anicium titanide 454, a sealed cylinder measuring 50cm in diameter by 25cm high. Suspended in the center of the cylinder, in pressurized chrylon gas, is a superconducting stator of thoronium arkenide. The stator, once set to a rotational rate above 125,540 rpm, generates a graviton field with a short lifetime, on the order of a few picoseconds. This decay time necessitates the addition of a second layer of generators beyond 30 meters distance. The field is gentle enough to allow natural walking without a gravity gradient from head to foot, long a problem in brute-force centripetal systems.

The superconducting stator remains suspended from the time of manufacture, and requires only an occasional synchronizing energy pulse from the EPS, normally once each sixty minutes. In the event of EPS failure, the stator will continue to provide an attraction field for up to 240 minutes, though some degradation to about 0.8g will be detected. Any perceived ship motions that might disturb the stator gyroscopically are dampened by sinusoidal ribs on the inner surface of the anicium titanide cylinder, effectively absorbing motions with an amplitude of less than or equal to 6cm/sec. All higher amplitude motions are relieved by the ships inertial dampening field.

Gravity generators are located throughout the habitable volume of the spacecraft. Because of this, inertial potential can vary from one location within the ship to another, especially during severe turning maneuvers. In order to allow translation of excess inertial potential from one part of the ship to another, the gravity generators are connected together by a network of small wave-guide conduits that allow field bleed for gravitational stability.

In the TOS episodes "Arena", "Tomorrow is Yesterday", and "Where No Man Has Gone Before" a voice in the background can be heard saying "Gravity down to point eight" during emergency situations.

So why did the Klingon ship lose gravity in ST6? In TOS "The Changeling" there are gravity palettes, and in ST5 and ST6 there are gravity boots, indicating that self contained, low power gravity generators that can be quickly turned on and off exist. The Klingons probably used something more akin to this gravity generation system aboard the warship than what the Federation uses.

Gravity generators measure 8.34 centimeters in length by 5.29 centimeters thick by 13.52 centemeters in length. These plates are installed in 5-by-5 matrix mats containing 25 blocks. This allows the mat to produce the optimal gravity conditions of 1.00 g. If in emergency conditions, the power is removed from these mats, they continue to create gravity for aproximately 48 minutes.

The crew of a starhsip is free to move about their ship without the problems of weighlessness because of a network of small generators working together to provide the proper sense of "down". The gravity field itself is created by a controlled stream of gravitons, using the same principles as the ship's tractor beams. Power is channeled into a hollow cylinder of anicum titanide 454, where a superconducting rotor of thoronium arkenide is suspended in a pressurized chrylon gas. Once set into motion, the rotor generates a graviton field gentle enough to simulate the gravitational pull of a standard M-Class planet. Requiring only occasional energy, the rotor can continue to provide an gravity field for up to 4 hours after a power loss.

LCARS24user

GROUP: Members

POSTS: 65

Report this May. 11 2005, 12:02 am

A real-world hint as to how artificial gravity could be accomplished is the Casimir effect, where highly polished metal plates once pushed together are difficult to pull apart. The theory is that only photons of extremely short wavelength can move between them while they are bombard in the opposite direction by photons of all wavelengths. Essentially, they are pushed together by light pressure. This suggests that gravity itself is not the result of gravitons but of pressure from ambient photons and that the Earth, for example, acts as a fairly weak shield below our feet such that fewer photons from the other side of the planet counteract those coming from above us. If that's the case, then artificial gravity could be created if one could create some kind of dampening beam that works to deflect photons within a small range of wavelengths. A fairly small tiny difference could result in usable artificial gravity for comfortable space travel. This could also be configured for propultion of spacecraft without the use of rocketry.
This is something of prerelativity viewpoint, but relatively still has not been properly tied to quantum mechanics, a problem that Einstein well understood and wrestled with in his last remaining years.

lanceromega

GROUP: Members

POSTS: 3859

Report this May. 11 2005, 1:26 am

Quote (LCARS24user @ May 10 2005, 9:02 pm)
A real-world hint as to how artificial gravity could be accomplished is the Casimir effect, where highly polished metal plates once pushed together are difficult to pull apart. The theory is that only photons of extremely short wavelength can move between them while they are bombard in the opposite direction by photons of all wavelengths.  Essentially, they are pushed together by light pressure. This suggests that gravity itself is not the result of gravitons but of pressure from ambient photons and that the Earth, for example, acts as a fairly weak shield below our feet such that fewer photons from the other side of the planet counteract those coming from above us.  If that's the case, then artificial gravity could be created if one could create some kind of dampening beam that works to deflect photons within a small range of wavelengths.  A fairly small tiny difference could result in usable artificial gravity for comfortable space travel. This could also be configured for propultion of spacecraft without the use of rocketry.
This is something of prerelativity viewpoint, but relatively still has not been properly tied to quantum mechanics, a problem that Einstein well understood and wrestled with in his last remaining years.

Actually the casimir effect has no relationship at all with gravity, the plate are drawn together by virtual photons or the fact that the space between the Plates are at a lower energy density than region outside of the plates, while gravity is said to be a  product of Gravitons.

String theory would have gravitons as the lowest mode of vibrating string and the convertion of photon to graviton should be possible.

Now there are some research on the creation of gravity via superconductor.

Proffessor Raymond chiao Proposes that superconductors can reflect an incoming electromagnetic wave as a gravitational wave, and back again.

see:
http://www.sciam.com/article....catID=2

LCARS24user

GROUP: Members

POSTS: 65

Report this May. 11 2005, 1:09 pm

Quote (lanceromega @ May 10 2005, 10:26 pm)
Quote (LCARS24user @ May 10 2005, 9:02 pm)
A real-world hint as to how artificial gravity could be accomplished is the Casimir effect, where highly polished metal plates once pushed together are difficult to pull apart. The theory is that only photons of extremely short wavelength can move between them while they are bombard in the opposite direction by photons of all wavelengths. Essentially, they are pushed together by light pressure. This suggests that gravity itself is not the result of gravitons but of pressure from ambient photons and that the Earth, for example, acts as a fairly weak shield below our feet such that fewer photons from the other side of the planet counteract those coming from above us. If that's the case, then artificial gravity could be created if one could create some kind of dampening beam that works to deflect photons within a small range of wavelengths. A fairly small tiny difference could result in usable artificial gravity for comfortable space travel. This could also be configured for propultion of spacecraft without the use of rocketry.
This is something of prerelativity viewpoint, but relatively still has not been properly tied to quantum mechanics, a problem that Einstein well understood and wrestled with in his last remaining years.

Actually the casimir effect has no relationship at all with gravity, the plate are drawn together by virtual photons or the fact that the space between the Plates are at a lower energy density than region outside of the plates, while gravity is said to be a product of Gravitons.

String theory would have gravitons as the lowest mode of vibrating string and the convertion of photon to graviton should be possible.

Now there are some research on the creation of gravity via superconductor.

Proffessor Raymond chiao Proposes that superconductors can reflect an incoming electromagnetic wave as a gravitational wave, and back again.

see:
http://www.sciam.com/article....catID=2

Yeah, yeah. But we're talking about artificial gravity. So far, all we've got is centrifuges and acceleration schemes. Artificial gravity is an imitation, not gravity itself.

To do something like what we see on Star Trek, the floor of each deck has to generate something that acts like gravity for the convenience of the people on board. On a starship, the artificial gravity is adjustable by deck, or even by room, as you know.

I've just suggested a starting point in the search for ideas. To do anything with that is of course beyond current technology. But current theory is lacking, as well, and someday will be considered quaint. Whatever does turn out to work far in the future would most likely be considered ridiculous if anyone were to suggest it now.

The Casimir effect does show that there is a pushing force. To go beyond that would require another, presumably exotic, method for canceling that force in one direction.

LCARS24user

GROUP: Members

POSTS: 65

Report this May. 11 2005, 1:47 pm

Another demonstration that creating artificial gravity in the future is not impossible is the Mystery Spot, near Santa Cruz, California. Einstein went there and couldn't explain what he saw. You probably won't believe it unless you go there and see it for yourself. It gets about 1,000 visitors a day in summer despite its somewhat remote location. Basically, you can't stand up straight on level concrete, and plumb bobs don't hang straight down. People have set up all sort of instruments and have only shown that something is going on there that current science can't explain. Various papers have been written to tear it apart, but those papers themselves are not hard to tear apart. If you just read about it or see a documentary on TV, you can say it must be a hoax. People who have been there don't think so.

lanceromega

GROUP: Members

POSTS: 3859

Report this May. 11 2005, 11:40 pm

Quote (LCARS24user @ May 11 2005, 10:09 am)
Quote (lanceromega @ May 10 2005, 10:26 pm)
Quote (LCARS24user @ May 10 2005, 9:02 pm)
A real-world hint as to how artificial gravity could be accomplished is the Casimir effect, where highly polished metal plates once pushed together are difficult to pull apart. The theory is that only photons of extremely short wavelength can move between them while they are bombard in the opposite direction by photons of all wavelengths.  Essentially, they are pushed together by light pressure. This suggests that gravity itself is not the result of gravitons but of pressure from ambient photons and that the Earth, for example, acts as a fairly weak shield below our feet such that fewer photons from the other side of the planet counteract those coming from above us.  If that's the case, then artificial gravity could be created if one could create some kind of dampening beam that works to deflect photons within a small range of wavelengths.  A fairly small tiny difference could result in usable artificial gravity for comfortable space travel. This could also be configured for propultion of spacecraft without the use of rocketry.
This is something of prerelativity viewpoint, but relatively still has not been properly tied to quantum mechanics, a problem that Einstein well understood and wrestled with in his last remaining years.

Actually the casimir effect has no relationship at all with gravity, the plate are drawn together by virtual photons or the fact that the space between the Plates are at a lower energy density than region outside of the plates, while gravity is said to be a  product of Gravitons.

String theory would have gravitons as the lowest mode of vibrating string and the convertion of photon to graviton should be possible.

Now there are some research on the creation of gravity via superconductor.

Proffessor Raymond chiao Proposes that superconductors can reflect an incoming electromagnetic wave as a gravitational wave, and back again.

see:
http://www.sciam.com/article....catID=2

Yeah, yeah. But we're talking about artificial gravity. So far, all we've got is centrifuges and acceleration schemes. Artificial gravity is an imitation, not gravity itself.

To do something like what we see on Star Trek, the floor of each deck has to generate something that acts like gravity for the convenience of the people on board. On a starship, the artificial gravity is adjustable by deck, or even by room, as you know.

I've just suggested a starting point in the search for ideas. To do anything with that is of course beyond current technology. But current theory is lacking, as well, and someday will be considered quaint.  Whatever does turn out to work far in the future would most likely be considered ridiculous if anyone were to suggest it now.

The Casimir effect does show that there is a pushing force. To go beyond that would require another, presumably exotic,  method for canceling that force in one direction.

yeah, yeah, artifical gravity could also mean man made gravity fields. Basically Chiao is talking about converting microwave to gravity wave. This is creating Gravity....

Casimir effect is basically a light sail using virtual photons, it effect is billion time weaker than gravity field needed to maintain health, to get it to be any where as powerful enought would require making the plates from Neutronium, at that point generating gravity is mote.

As it stand there is already a way to create a gravity on demand, it called gravimagnetism.. Basically it invovles the fact that rotating masses generate a force similar to how rotating charges generate Magnetic fields. This is predicted by Relativity and the Geogravitic force of the earth has been measured by satellites.

It believed by Chiao and other researches that this effect can be duplicated by ions being accelerated in superconductive coils.. So we could turn on a particle accelerator and generate a Geogravitic force that would provide a gravity field..

By the way I been to the mystery spot  6 year ago, it a rip off there is no strange force in play other than optical illusion caused by the topology of the landscape.

Check out the following paper:

http://garnet.berkeley.edu/~wprinz....uz'

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