Abstract: The present disclosure relates to a primer for a personal firearm. The primer includes a primer cup including a cylindrical side wall closed at one outer end by a bottom; a pyrotechnic charge placed in the primer cup; an electrical component suitable for producing the thermal energy needed for priming the pyrotechnic charge, the charge being in contact with the electrical component; a printed circuit board, said printed circuit board having an internal face comprising the electrical component in contact with the pyrotechnic charge, characterized in that said printed circuit board forms at least in part the outer bottom of the primer cup.

Abstract: A method and device are provided for guiding an aerodyne on the runway, picularly during the taxiing phase preceding take off, the device including an inertial unit adapted for delivering signals representative of the North speed, of the East speed, of the azimuth and of the ground speed of the aerodyne. From these signals, a computer elaborates a parameter defining the axis of the runway, during an apprenticeship step during which the aerodyne, guided on site by the pilot, taxies along the axis of the runway, and stores this parameter at the end of the step. The computer then delivers to the means piloting the aerodyne a synthetic runway aberration signal between the axis of the runway thus stored and the position of the aerodyne delivered by the inertial unit.