What is the most effective design for a coil gun?

[Gogeta007]

Im in the process of making a coil gun and I need to do some calculations but I am not sure how to get the Force of the magnetic field.
I know how to claculate the field and I have the values of my capacitors that I will be using to discharge the current into the magnetic wire.

Can someone help me to "theorize" the force that the magnetic field will produce INSIDE the solenoid unto the material that will be launched?

I know how many turns I have per unit length and how many layers I have (im actually still working on it).

right now I have a charging station for 4 capacitors from flash cameras (300v and around 100uf)
I might add more capacitors (maybe up to 10) but right now I am just testing with 4.

=thnkz=


gogeta

 

[kuruman]

What is the working principle of your coil gun? Is your projectile a piece of magnetic material that you expect to accelerate because of a magnetic force much like a magnet attracting your refrigerator door? If so, you should be aware that magnetic dipoles (of which your projectile consists of) experience forces in non-uniform magnetic fields. Inside the solenoid the magnetic field is pretty much uniform which means that the force on your projectile not only is small but has a minimum at the mid point of the solenoid. It highly unlikely that the projectile will shoot out either end of the solenoid. You will be better off with a coil gun that is based on the jumping ring principle. You can find numerous theoretical treatments of it on the internet.