A munition including: a shell; and a generator including: a drum having a cable with a free end, the drum includes a drum gear, the cable releasing from the drum when unwound; a spring for storing energy as the cable is unwound; a generator connected to the drum such that drum rotation is transferred to an input of the generator after the cable is unwound and stored energy in the spring turns the member, the generator includes an input gear connected to the drum gear; and a clutch having an input gear engaged with the drum gear and an output gear engaged with the generator input gear, wherein the clutch transfers rotation of the clutch input gear to rotation of the clutch output gear after the cable is unwound and released from the drum and the stored energy in the spring turns the drum.

A method for generating power in a gravity dropped munition. The method including: attaching a cable from a generator associated with the munition to a portion of an aircraft; separating the munition from the aircraft to pull the cable from the munition; converting the pulling of the cable to a rotation; producing power from the rotation; and providing the power to an internal component of the munition.

A method for generating power in a gravity dropped munition. The method including: attaching a cable from a generator associated with the munition to a portion of an aircraft; separating the munition from the aircraft to pull the cable from the munition; converting the pulling of the cable to a rotation; producing power from the rotation; and providing the power to an internal component of the munition.

A device responsive to an acceleration pulse event, the device including: a piezoelectric device configured to generate a voltage over a duration responsive to one or more acceleration pulse events; an electrical storage device configured to receive a portion of the generated voltage to accumulate a charge; an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events; and a voltage limiting device coupled to the electrical storage device and configured to limit the portion of the generated voltage applied to the electrical storage device to a predetermined limit.

A device responsive to an acceleration pulse event, the device including: a piezoelectric device configured to generate a voltage over a duration responsive to one or more acceleration pulse events; an electrical storage device configured to receive a portion of the generated voltage to accumulate a charge; an energy dissipating device coupled to the electrical storage device and configured to dissipate the accumulated charge following the one or more acceleration pulse events and not to substantially dissipate the accumulated charge during the one or more acceleration pulse events; and a voltage limiting device coupled to the electrical storage device and configured to limit the portion of the generated voltage applied to the electrical storage device to a predetermined limit.

Method for the validation of a fuse head in an electronic detonator, wherein said detonator comprises: a reference resistor, a fuse head, at least one capacitor and switching means, wherein in a first position of the switching means, the reference resistor is connected to the at least one capacitor forming a first RC circuit, and in a second position of the switching means, the fuse head is connected to the at least one capacitor forming a second RC circuit; the method comprising the following steps: measuring at least once a first charge time; activating the switching means to the second position to replace the reference resistor in the RC circuit with the fuse head; measuring at least once a second charge time; and determining the deviation of the second charge time from the first charge time.

Method for the validation of a fuse head in an electronic detonator, wherein said detonator comprises: a reference resistor, a fuse head, at least one capacitor and switching means, wherein in a first position of the switching means, the reference resistor is connected to the at least one capacitor forming a first RC circuit, and in a second position of the switching means, the fuse head is connected to the at least one capacitor forming a second RC circuit; the method comprising the following steps: measuring at least once a first charge time; activating the switching means to the second position to replace the reference resistor in the RC circuit with the fuse head; measuring at least once a second charge time; and determining the deviation of the second charge time from the first charge time.

A method for providing electrical energy to a self-destruct fuze for submunitions in a projectile, the method including: storing mechanical energy in an elastic element attached to a first movable mass at one end of the elastic element upon a firing acceleration of the projectile; engaging a second movable mass with the first movable mass such that movement of the second movable mass upon the acceleration moves the second movable mass which in turn moves the first movable mass; converting the stored mechanical energy to electrical energy upon the acceleration to vibrate the first movable mass and the elastic element to apply a cyclic force to a piezoelectric element attached to another end of the elastic element; and 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 acceleration.

A method for providing electrical energy to a self-destruct fuze for submunitions in a projectile, the method including: storing mechanical energy in an elastic element attached to a first movable mass at one end of the elastic element upon a firing acceleration of the projectile; engaging a second movable mass with the first movable mass such that movement of the second movable mass upon the acceleration moves the second movable mass which in turn moves the first movable mass; converting the stored mechanical energy to electrical energy upon the acceleration to vibrate the first movable mass and the elastic element to apply a cyclic force to a piezoelectric element attached to another end of the elastic element; and 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 acceleration.

An initiator system includes a firing pin and a piezoelectric-based energy harvester that generates and stores electric energy when impacted by the firing pin. The electric energy is independently available at a first output and second output of the energy harvester. An electronic time delay is coupled to the second output for generation of an electric trigger signal using the electric energy available at the second output. The electric trigger signal is generated at a selected period of time after the electric energy is available at the second output. An initiation-energy generator is coupled to the first output for the storage of electric energy available thereof. The initiation-energy generator is also coupled to the electronic time delay to receive the electric trigger signal, and uses stored electric energy to generate an initiation explosion when the electric trigger signal is received.