Exemplary embodiments of an ignition apparatus are disclosed herein. Each ignition apparatus is configured for use in a projectile, such as an artillery projectile, rocket, missile, drone, and other similar projectiles. In each exemplary embodiment disclosed herein, the ignition apparatus initiates an ignition sequence that is the reverse of the ignition sequences implemented by conventional ignition devices that utilize pre-loaded or pre-compressed spring-operated firing pins. Each exemplary embodiment of the ignition apparatus disclosed herein utilizes the extreme axial acceleration of the projectile to arm and initiate the ignition sequence.

Exemplary embodiments of an ignition apparatus are disclosed herein. Each ignition apparatus is configured for use in a projectile, such as an artillery projectile, rocket, missile, drone, and other similar projectiles. In each exemplary embodiment disclosed herein, the ignition apparatus initiates an ignition sequence that is the reverse of the ignition sequences implemented by conventional ignition devices that utilize pre-loaded or pre-compressed spring-operated firing pins. Each exemplary embodiment of the ignition apparatus disclosed herein utilizes the extreme axial acceleration of the projectile to arm and initiate the ignition sequence.

In a projectile launch environment, a fuzing safety device independently generates its own voltage upon setback which then is then used to arm the projectile. The arming is done independently of any on board battery rise time, and setback scenarios are detected free of false impacts such as dropping or jostling. The fuzing safety device includes a piezoelectric sensor for detecting motion in the projectile.

In a projectile launch environment, a fuzing safety device independently generates its own voltage upon setback which then is then used to arm the projectile. The arming is done independently of any on board battery rise time, and setback scenarios are detected free of false impacts such as dropping or jostling. The fuzing safety device includes a piezoelectric sensor for detecting motion in the projectile.

The invention relates to a percussion fuse having an active sensor, which generates a sensor voltage, having a filter circuit consisting of a high pass and at least one low pass, in order to be able to adjust dynamic percussion characteristics. The invention further relates to an operating state switch, which can transition the percussion fuse into one of two operating states, specifically into an activated and a deactivated operating state. To this end, the operating state switch is switched into one of the two operating states by means of a safety voltage. In the active operating state, the sensor voltage is supplied directly to the threshold value switch and in the deactivated operating state, the sensor voltage is held below the threshold value of the threshold value switch by an input limiter.

The invention relates to a percussion fuse having an active sensor, which generates a sensor voltage, having a filter circuit consisting of a high pass and at least one low pass, in order to be able to adjust dynamic percussion characteristics. The invention further relates to an operating state switch, which can transition the percussion fuse into one of two operating states, specifically into an activated and a deactivated operating state. To this end, the operating state switch is switched into one of the two operating states by means of a safety voltage. In the active operating state, the sensor voltage is supplied directly to the threshold value switch and in the deactivated operating state, the sensor voltage is held below the threshold value of the threshold value switch by an input limiter.

According to a first aspect of the present invention, there is provided a fuse system for a projectile for a ranged weapon, the fuse system comprising: a pressure sensor system for sensing an air pressure of an environment in which the fuse system is present; a control system arranged to receive a signal from the pressure sensor system, and to at least initiate arming of the fuse system conditional on the received signal.

A device including: a casing; an actuation mass rotatable between a first second positions relative to the casing; a first spring for biasing the actuation mass towards the second position; and a blocking mass rotatable between third fourth positions relative to the casing, a first portion of the blocking mass, while in the third position, is configured to engage with a second portion of the actuation mass to maintain the actuation mass in the first position and to prevent the actuation mass, against the biasing by the spring, from rotating to the second position; wherein upon an acceleration event having an acceleration and duration greater than a predetermined threshold, the blocking mass rotates to the fourth position to release engagement of the first portion of the blocking mass with the second portion of the actuation mass to allow the spring to move the actuation mass to the second position.

A device including: a casing; an actuation mass rotatable between a first second positions relative to the casing; a first spring for biasing the actuation mass towards the second position; and a blocking mass rotatable between third fourth positions relative to the casing, a first portion of the blocking mass, while in the third position, is configured to engage with a second portion of the actuation mass to maintain the actuation mass in the first position and to prevent the actuation mass, against the biasing by the spring, from rotating to the second position; wherein upon an acceleration event having an acceleration and duration greater than a predetermined threshold, the blocking mass rotates to the fourth position to release engagement of the first portion of the blocking mass with the second portion of the actuation mass to allow the spring to move the actuation mass to the second position.

An energy storage device including: a first movable member configured to be movable in one direction relative to a base; a first biasing member configured to bias the first movable member in a second direction opposed to the first direction; a plurality of second movable members, each movable towards an engagement surface of the first movable member when subjected to a predetermined acceleration event in a direction offset from the first direction; and wherein the engagement surface having a portion which when pressed causes a movement of the first movable member in the one direction against a biasing force of the first biasing member; and the plurality of second movable members are configured to sequentially engage the engagement surface upon an increasing acceleration of the base such that energy is stored in the first biasing member.