What would the most efficient single coilgun stage look like?
Yanom, Wed Dec 26 2012, 12:20AMIf I wanted to make the most efficient single coilgun stage possible, what would it look like? how long would the projectile/coil be? How wide? I would want to stay below saturation, no? I've also heard that the coil is the most efficient when the projectile is between (1/3) and (2/3) of the way into the coil. Is that true?
What would the size of it be? Are bigger or smaller coilguns more efficient ?
In short, what's the most efficient single coil you can think of?
Re: What would the most efficient single coilgun stage look like?
Yandersen, Thu Dec 27 2012, 11:25AM
Superconducting one.
Yandersen, Thu Dec 27 2012, 11:25AM
Superconducting one.
Re: What would the most efficient single coilgun stage look like?
Myke, Thu Dec 27 2012, 04:42PM
I'd say timing would be more important to avoid suckback. Otherwise, one designed to give the projectile a maximal impulse given its starting velocity without saturating the projectile (a small project I should get to some time).
Myke, Thu Dec 27 2012, 04:42PM
I'd say timing would be more important to avoid suckback. Otherwise, one designed to give the projectile a maximal impulse given its starting velocity without saturating the projectile (a small project I should get to some time).
Re: What would the most efficient single coilgun stage look like?
Maxwell, Thu Dec 27 2012, 06:23PM
That's funny, wasn't expecting that.
As of now, It would appear that Yadersen's non-polar capacitor setup is working the most efficiently, although it utilizes multiple stages.
Maxwell, Thu Dec 27 2012, 06:23PM
Yandersen wrote ...
Superconducting one.
Superconducting one.
That's funny, wasn't expecting that.
As of now, It would appear that Yadersen's non-polar capacitor setup is working the most efficiently, although it utilizes multiple stages.
Re: What would the most efficient single coilgun stage look like?
Yandersen, Thu Dec 27 2012, 08:39PM
A single stage without reusing energy leftovers shown around 8% of efficiency.
But in general, the less energy is pushed into the coil, the higher the efficiency - that's why multistaging is so cool.
More energy may be driven to higher stages as they dissipate less due to shorter pulse. In other words, better to drive first stages with less energy and gradually increase the doze for subsequent stages.
Yandersen, Thu Dec 27 2012, 08:39PM
A single stage without reusing energy leftovers shown around 8% of efficiency.
But in general, the less energy is pushed into the coil, the higher the efficiency - that's why multistaging is so cool.
More energy may be driven to higher stages as they dissipate less due to shorter pulse. In other words, better to drive first stages with less energy and gradually increase the doze for subsequent stages.
Re: What would the most efficient single coilgun stage look like?
Yanom, Thu Dec 27 2012, 10:47PM
This is true even once you go below the iron's saturation point (measured in amp-turns per meter)?
Yanom, Thu Dec 27 2012, 10:47PM
Yandersen wrote ...
But in general, the less energy is pushed into the coil, the higher the efficiency - that's why multistaging is so cool.
But in general, the less energy is pushed into the coil, the higher the efficiency - that's why multistaging is so cool.
This is true even once you go below the iron's saturation point (measured in amp-turns per meter)?
Re: What would the most efficient single coilgun stage look like?
Yandersen, Fri Dec 28 2012, 03:50AM
This will not be a gun. Even not a toy for 3+.
Yandersen, Fri Dec 28 2012, 03:50AM
This will not be a gun. Even not a toy for 3+.
Re: What would the most efficient single coilgun stage look like?
Maxwell, Fri Dec 28 2012, 05:05AM
And I believe that's with the non-polar capacitor benchset.
Typical (basic) polar-cap benchsets run 1-3% efficiency.
Maxwell, Fri Dec 28 2012, 05:05AM
Yandersen wrote ...
A single stage without reusing energy leftovers shown around 8% of efficiency.
A single stage without reusing energy leftovers shown around 8% of efficiency.
And I believe that's with the non-polar capacitor benchset.
Typical (basic) polar-cap benchsets run 1-3% efficiency.
Re: What would the most efficient single coilgun stage look like?
Yandersen, Fri Dec 28 2012, 02:56PM
May be 3-5% if damper diode is not used, but it will slowly kill your caps.
Yandersen, Fri Dec 28 2012, 02:56PM
May be 3-5% if damper diode is not used, but it will slowly kill your caps.
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