# Practice English Speaking&Listening with: ? Coil gun - Bullet Speed - Energy Speed - Calculation

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Hello friends!

In this video I'll show how you can measure the speed and energy of a bullet fired from a coil-gun.

I compiled the coilgun model according to the attached circuit.

The main parts of an electromagnetic gun are a storage capacitor, a coil and a projectile.

When the capacitor is discharged to the coil, a magnetic field arises that accelerates the projectile.

To measure the speed and energy of the bullet, I made several measurements that I entered into the calculator.

That's how I measured the distance from the coil to the target.

The core of the bullet I made of mild steel and attached to it the tip and stabilizer.

I weighed the bullet on the scale.

To measure the flight time of the bullet, I connected two sensors to the Audacity free program.

I put the inductive sensor near to the Gauss Gan coil, and the piezoelectric sensor attached to the target.

As a result, I got the value of the speed and energy of the bullet, as well as the efficiency of the gun.

How could I resist not shooting at tins...?

I wishing you successful projects and creative inspiration!

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