Magnetic Liquid Screw Propeller

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Discussion Overview

The discussion explores the feasibility of using magnetic liquids in a screw propeller design, considering both theoretical and practical aspects. Participants examine the potential for maintaining desired geometries and the challenges associated with manipulating magnetic fields.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Mustafa Umut Sarac questions the possibility of using magnetic liquids in a screw propeller and inquires about prior patents or concepts.
  • One participant suggests that while the idea is novel, the practicality is questionable, particularly regarding maintaining a properly oriented magnetic field during rotation.
  • Another participant argues that current technology does not allow for the manipulation of magnetic fields strong enough to hold the magnetic liquid under the stresses experienced by a propeller.
  • Mustafa proposes an alternative involving the use of strong nanotube cables and nuclear power to create a self-forming screw propeller shape with magnetic liquid, although this idea also faces challenges related to magnetic field strength.
  • A later reply indicates that while the nanotube concept is more practical, the same issues with establishing and manipulating strong magnetic fields persist, suggesting the use of shape-memory metals as a potential alternative.

Areas of Agreement / Disagreement

Participants generally express skepticism about the feasibility of using magnetic liquids in this application, with multiple competing views regarding the practicality and technological limitations involved. The discussion remains unresolved.

Contextual Notes

Limitations include the current inability to generate and maintain sufficiently strong magnetic fields, as well as the dependence on future advancements in materials technology, such as nanotubes and shape-memory metals.

Mustafa Umut
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Is it possible or will it be possible to keep some magnetic liquids in some desired geometry and use as a traditional screw propeller ?
Is it patented or visioned before ?

Best regards ,

Mustafa Umut Sarac

Istanbul
 
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I've got to admit that you're probably the first to think of it. Why you would want to do it is beyond me, unless it's just the coolness factor.
In any event, I doubt that it would be possible. The first and foremost problem that comes to mind is how to maintain a properly orientated field during rotation.
 
While variable geometry props are definitely on people's minds (optimizing the prop's shape for different speeds), there's no way you could use a magnetic fluid to achieve it. We don't have the required technology to manipulate magnetic fields in the ways that would be required, nor can we generate sustained fields strong enough to hold the material together under the kind of stress a prop might see.

It's kind of a cool idea though.
 
Here is my idea.

It will be possible to make extreme strong nano tube tubes at the future.
May be it will be possible to make a screw propeller form with extreme strong nanotube cables.
Than apply nuclear power from submarine and hold a piece of magnetic liquid on the cables.
Than engine starts to turn and magnetic liquid self form for the ideal screw propeller shape with the pressure of water.?

Thats what i think of ,

Best ,

Mustafa Umut Sarac

Istanbul
 
That's a bit different, and more practical, but you still run into the problem that we can't as yet establish or maintain, let alone manipulate, sufficiently strong magnetic fields. You might be better off trying to do something with a shape-memory metal such as NiTiNOL.
 

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