Electro-mechanical fuze for a projectile

摘要

The present invention describes an electronic fuze operable to complement a mechanical point impact fuze. The electronic fuze includes a voltage generator circuit, micro-controller, a piezo-electric sensor, a firing circuit and a safety lockout circuit. When a projectile strikes a target at an optimum angle, the mechanical point impact fuze is activated; when the strike angle is oblique, the mechanical point impact fuze may be ineffective but the piezo-electric sensor is operable to trigger the firing circuit. The safety lockout circuit ensures the firing circuit is operative only after a predetermined delay time when an n-channel FET is turned OFF. The micro-controller also generates a TIME-OUT signal, which provides for self-destruction of a projectile that has failed to explode.

主权项

1. A method of controlling a fuze for a projectile, said method comprising:
coupling a signal of a piezo-electric sensor and a safety lockout circuit to an electronic firing circuit; wherein the safety lockout circuit is safety locking out the electronic firing circuit to ground until said projectile has been propelled through a tactical distance; during the propelled flight, said piezo-electric sensor generating and sending a firing signal to said electronic firing circuit; said electronic firing circuit setting off an electric detonator in an impact sensing mode, depending on said safety lockout circuit, or in a self-destruct mode; and detonating said electric detonator in turn to actuate a firing pin to set off a stab detonator disposed in said projectile, with said electric detonator being disposed co-axially with said firing pin.