Power supply for providing electrical energy to a self-destruct fuze for submunitions contained in a projectile

A power supply for providing electrical energy to a self-destruct fuze for submunitions contained in a projectile, the power supply comprising:

• a first movable mass;
• at least one elastic element attached to the first movable mass at one end for storing mechanical energy upon a firing acceleration of the projectile;
• a second movable mass engaged with the first movable mass such that movement of the second movable mass upon the firing acceleration moves the second movable mass which in turn moves the first movable mass;
• at least one piezoelectric element attached to another end of the at least one elastic element for converting the stored mechanical energy to electrical energy upon the firing acceleration to vibrate the first movable mass and the at least one elastic element to apply a cyclic force to the at least one piezoelectric element;
• and
• a locking mechanism for locking the second movable mass in a position where the second movable mass cannot interfere with vibration of the first movable mass upon the second movable mass being subjected to the firing acceleration.