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1. A fuze including a self-destruction device for a gyratory projectile, said fuze consisting of a hollow body, defined by an axis of symmetry coinciding with the axis of rotation of said projectile, and including a striker associated with a striker holder, a primer associated with a primer holder, and said self-destruction device arranged to cooperate with said striker holder and said primer holder to successively generate a first position called “storage position” before firing the projectile, in which the primer is misaligned with respect to the striker, a second position called “intermediate position” upon the departure of the projectile, in which the striker holder is away from the primer holder, a third position called “cocked position” during the flight of the projectile, in which the primer is aligned with the striker, and a fourth position called “self-destruction position” at the end of the flight, in which the strike holder is folded down on the primer holder so that the striker hits the primer and initiates a pyrotechnic chain contained in the projectile, wherein said striker holder is rotatable about a pendulum axis perpendicular to said axis of symmetry, and wherein said primer holder is rotatable about an axis of rotation parallel to said axis of symmetry, and wherein said self-destruction device includes an SD mechanism and a safety mechanism arranged to cooperate, and wherein said SD mechanism includes an axial inertial body urged by a return member and arranged to use the linear acceleration of the projectile upon the departure of the projectile, store axial kinetic energy and cause a switch from said storage position to said intermediate position in which said SD mechanism releases the striker holder so that the striker holder moves away from the primer holder, and wherein said safety mechanism includes a centrifugal lever urged by a return member and arranged to use a centrifugal effects of the projectile during the flight, store radial kinetic energy and cause a switch from said intermediate position to said cocked position in which said safety mechanism locks said SD mechanism, and wherein said safety mechanism is further arranged, at the end of the flight, as soon as the centrifugal force induced by the rotation of the projectile drops below a determined threshold, to cause a switch from said cocked position to said self-destruction position in which said safety mechanism restores the stored radial kinetic energy and unlocks said SD mechanism so that, in turn, said SD mechanism restores the stored axial kinetic energy and folds the striker holder back onto the primer holder to strike the primer.
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