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4hv.org :: Forums :: Electromagnetic Projectile Accelerators

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Multi stage rail gun? What are the advantage doing this?

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LAN_403

PlayNice

Sun Nov 10 2013, 03:48AM

Registered Member #8032 Joined: Tue Nov 13 2012, 01:22AM
Location: Chicagoland USA
Posts: 33

Would having multiple stages in a railgun have any advantages?

So for example: instead of having say a 4 foot long rail, have 4 1 foot rails one after another?

Have the same power supply on all of them say 50v 100amp (no caps). What are the advantages?

I'm thinking the multi stage gun would have the advantage of less resistance since rails are shorter. Also a lot less magnetic force pushing fails apart right? Would such design have a higher top speed penitential, or no?

Disadvantages are of course more complicated and expensive design.

BigBad

Mon Nov 11 2013, 12:15AM

Registered Member #2529 Joined: Thu Dec 10 2009, 02:43AM
Location:
Posts: 600

Well, you could run them at progressively higher (fixed) voltages, that way the acceleration would be more even.

Otherwise the field weakening effect of the back-emf will reduce the acceleration towards the end of the rail.

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