### Author Topic: Homopolar Motor For Artificial Gravity  (Read 3760 times)

#### StoyanNikolov

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##### Homopolar Motor For Artificial Gravity
« on: 05/01/2023 07:16 am »

Will the "Upper motor on the picture" rotate "self rotate" in Vacuum
or in Space ?
« Last Edit: 05/01/2023 08:03 am by StoyanNikolov »

#### aceshigh

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #1 on: 05/02/2023 05:13 am »
It's transforming chemical energy from the battery into electromagnetism which makes the battery roll. Lorentz force is pretty well understood.

To roll it needs to apply force to something (the table).

It wouldn´t work in vacuum. Not to move. Just to rotate. An astronaut can rotate himself in vacuum.

#### StoyanNikolov

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #2 on: 05/02/2023 07:31 am »
So it will self rotate ?

#### Twark_Main

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #3 on: 05/07/2023 08:40 am »
Yes. The wire will rotate around the circumference of the battery until it's out of energy.

This will cause the entire battery to rotate in the opposite direction, and then come to a stop again once the battery is dead. This is the same as any Reaction Wheel.

https://en.wikipedia.org/wiki/Reaction_wheel

#### chazemz

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #4 on: 05/07/2023 01:16 pm »
You will need to configure one of the rotations so that it applies a force in the same direction. Then you will have an action wheel. It is not that difficult if you think about it.

#### StoyanNikolov

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #5 on: 05/07/2023 01:25 pm »
Yes. The wire will rotate around the circumference of the battery until it's out of energy.

This will cause the entire battery to rotate in the opposite direction, and then come to a stop again once the battery is dead. This is the same as any Reaction Wheel.

https://en.wikipedia.org/wiki/Reaction_wheel

You talk about the motor from 1:08 (Where all parts of the motor
Roll=Translation+Rotation in one direction) ? All parts of 1:08 are together.
They rotate in one direction in 1:08

#### chazemz

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #6 on: 05/07/2023 02:36 pm »
May I suggest soldering the wire to the two end magnets, this would make the parts more together. If the experiment still works, then fix the magnets to the battery. It will be interesting to see what happens then.

#### StoyanNikolov

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #7 on: 05/09/2023 10:17 am »
May I suggest soldering the wire to the two end magnets, this would make the parts more together. If the experiment still works, then fix the magnets to the battery. It will be interesting to see what happens then.

In the video from 1:08 all parts are  together. They are rolling
(spinnig motion+ translational motion) together in one direction.

#### chazemz

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##### Re: Homopolar Motor For Artificial Gravity
« Reply #8 on: 05/09/2023 04:05 pm »
In the second part of your video the wire is not spinning. It may be that the table is stopping it from spinning. May I also point out that the battery is rolling along the table and so, is interacting with the table the same as car tyres interacting with the road surface. I do like the video and think the experiment is really good. Maybe it does not work the way you think it does.