The concepts in the design of the bullet from the gun runner with speed like a bullet train, a form of structure is similar to the bands extreme distortions that crept away.
The idea for the design came from. The bullet struck the runway at high speed. Like a bullet train This form of structure is very similar to the way of twisting the bullet out.
Design concept from The bolt of the projectile running at high speed like a bullet train. The art form of structure is similar to the twist band emitted.