Abstract: A device and method for protecting a site against lightning strikes. The device detects the approach of a lightning discharge towards the site. In response, the device forms an ionized channel in the vicinity of the site to direct the electrical lightning discharge towards a lightning conductor.

Abstract: System for artificially triggering lightning flashes. This system comprises a rocket, provided with fins, launched from a launcher and which trails behind it a thin wire made from a conductive material, which is either electrically connected to the ground, or is connected to a second wire made from an insulating material, which is in turn attached to the ground, as well as a pay-out reel. The pay-out reel is constituted by a reel body in the form of a cylindrical tube onto which the wire is wound with a limited winding thickness, mounted at the lower end, centered on the central axis of the rocket, the reel having a diameter larger than that of the rocket body and smaller than the apparent diameter of the guidance fins. The launcher is constituted by a plastic tube.