Could an Electrostatic Lift Vehicle Transfer the Earth's Atmosphere to the Moon?

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Discussion Overview

The discussion centers around the feasibility of using an electrostatic lift vehicle to transfer the Earth's atmosphere to the Moon, exploring the theoretical implications of establishing an electrostatic field between the two bodies. The scope includes theoretical considerations and speculative applications of electrostatic propulsion methods.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes using a 6GeV ion beam accelerator on the Moon to create an electrostatic field that could propel a ship between the Earth and the Moon, while noting that this method would not significantly alter the gravitational force between the two bodies.
  • Another participant questions whether the spaceship itself needs to be charged for the proposed method to work.
  • Concerns are raised about the duration for which the Earth and Moon can maintain their charge, with one participant suggesting that leakage through interactions with the atmosphere may be a significant issue.
  • A participant confirms that the spaceship will indeed have a charge and can control the force exerted on it by bleeding off charge as needed.
  • Humor is introduced with a comment about the impracticality of needing physical structures, like doorknobs, along the path between the Earth and the Moon.
  • Further emphasis is placed on the potential for charge leakage affecting the system's viability, particularly through interactions with the Earth's atmosphere.

Areas of Agreement / Disagreement

Participants express differing views on the practicality and implications of maintaining charge between the Earth and Moon, with no consensus reached on the feasibility of the proposed electrostatic lift vehicle concept.

Contextual Notes

Participants highlight potential limitations regarding the assumptions of charge maintenance and the effects of atmospheric interactions on the proposed electrostatic system.

x_engineer
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Except for railguns every space launch method we have (at least partially) built has been based on the rocket engine.

But with the Earth Moon system we have an opportunity to use another method.
Put a 6GeV ion beam accelerator on the Moon, and transfer 400000C of charge to the Earth.
This sets up an electrostatic field between the Earth and the Moon, that does not significantly change the force between them, but which you can use to propel a ship between them. The breakdown field of the Earth's atmosphere/ionosphere would prevent this being used
for a ship launching off Earth, but might be useful for ships launching off the Moon without using rockets.

But what would happen to the Earth's atmosphere? Would it transfer to the Moon?

Niket Patwardhan

BTW - 400000C is approximately the charge of the solid/liquid Earth with respect to the ionosphere...
 
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x_engineer said:
which you can use to propel a ship between them
Have you considered whether or not you have to put a charge on the spaceship for this to work?
 
Have you considered how long you are going to be able to keep the Earth and moon charged?
 
256bits said:
Have you considered whether or not you have to put a charge on the spaceship for this to work?
Yes, the spaceship will have a charge.
The charge can be bled off to control the force on the ship.
 
x_engineer said:
The charge can be bled off to control the force on the ship.
Are there going to be doorknobs placed along the path between the Earth and the Moon to help with that? 😉
 
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There will be no need for any doorknobs or wiring or any material structure between the Earth and Moon.
 
Vanadium 50 said:
Have you considered how long you are going to be able to keep the Earth and moon charged?
I guess this is part of the question I asked, because I foresee leakage through action on the charged ions in the atmosphere.
 

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