http://dvice.com/archives/2010/12/electromagnetic-1.php

you can use this type of gun to launch your R/c planes

you can make one yourself . the working principle is depicted in the image below

http://en.wikipedia.org/wiki/File:Coilgun_animation.gif

interesting thing...but sudden thrust may break away certain part or R/C model.............controlled thrust if possible in this can be used to launch the craft.
What Say experts.......?

I think the 'Rail Gun' as described in the book  "Concepts of Physics by Resnick - Halliday" was much different where it was meant for accelerating projectiles to almost speed of light (Super-Hypersonic) - Like the one showed in movie Transformer part II (around the end).
http://en.wikipedia.org/wiki/Railgun


These two examples may not be purely the classic examples of Rail Guns. Never the less, its nice to see such development happening lately.

Disney

http://jalopnik.com/5716980/how-disney-designed-the-militarys-electromagnetic-launch-system

Planning to make a coilgun for a school project.Seems like fun.But there is a difference between a coilgun and a rail gun.