A method, device, and projectile having a device for guiding or piloting
projectiles or missiles (self-propelled or non-self-propelled), to
deflect, in a direction Y, a hypervelocity projectile operating in a gas,
such as a shell, a bullet, or a missile, having a nose, generally in the
shape of a cone, with a more or less pointed tip, by generating a first
high-voltage discharge able to produce a plasma over a first limited
sector of the projectile surface and in direction Y, maintaining the
plasma, and generating another low-voltage discharge able to supply the
plasma with energy over a second limited sector of the projectile surface
and in direction Y, the first and the second sectors being different and
may overlap.