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Forums
4hv.org :: Forums :: Electromagnetic Projectile Accelerators
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Railgun launched aircraft

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Uriah
Fri Aug 10 2007, 08:06AM Print
Uriah Registered Member #898 Joined: Sun Jul 15 2007, 07:50AM
Location:
Posts: 20
An idea of mine has always been to launch large sized model airplanes using a railgun. I have heard of it being done, but nothing on calculating the net force (not counting drag) exerted on the "launch sting".

I have never built an EM Projectile Accelerator of any kind but I have a preatty good concept of how it works.

Will the attraction force depend more on current or voltage?

Would a correctly aligned magnet work as the projectile? Using a rare earth magnet I am assuming the magnetic attraction will be stronger then using a solid metal.

Regards,
Uriah
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Psyko
Sat Aug 11 2007, 08:00PM
Psyko Registered Member #81 Joined: Thu Feb 09 2006, 11:57AM
Location: Paris, France
Posts: 43
Uriah wrote ...

I have a preatty good concept of how it works.
I don't think so..
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Myke
Sat Aug 11 2007, 08:04PM
Myke Registered Member #540 Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
I would think inertia would tear apart the plane or it wouldn't go anywhere because the plane is too heavy.
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Ragnarok
Sun Aug 12 2007, 09:48PM
Ragnarok Registered Member #659 Joined: Fri Apr 20 2007, 09:14AM
Location: SW Hertfordshire, UK
Posts: 75
I agree with Psyko, you seem to be confused about the matter.

Having experience with spudguns, I can safely tell you that high accelerations can easily tear apart much tougher things than model air craft. In theory, a railgun can acheive much higher accelerations again.

Perhaps a better option for you would be to look at some kind of torsion arm system - like a crossbow?
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