Multistage thermal trigger devices disclosed herein may include a first stage and a second stage, wherein the first stage activates at a first temperature, and wherein the second stage activates at a second temperature. The first stage activates an arming assembly so that the second stage is armed. The second stage may then activate the output of the multistage thermal trigger device, via the arming assembly, when the second temperature is reached. An autoignition material (AIM) capsule is also disclosed herein. The AIM capsule may be deployed in connection with the disclosed multistage thermal trigger devices.

Multistage thermal trigger devices disclosed herein may include a first stage and a second stage, wherein the first stage activates at a first temperature, and wherein the second stage activates at a second temperature. The first stage activates an arming assembly so that the second stage is armed. The second stage may then activate the output of the multistage thermal trigger device, via the arming assembly, when the second temperature is reached. An autoignition material (AIM) capsule is also disclosed herein. The AIM capsule may be deployed in connection with the disclosed multistage thermal trigger devices.

Examples of safety devices for use with a munition are provided, the munition including a munition explosive and a safe and arm (S&A) device for activation of the munition explosive. In some examples the safety device includes a switch member and an actuation mechanism. The switch member is configured for being disposed between the munition explosive and the S&A device, the switch member being movable between at least two switch positions. In a first switch position (an arming prevention position (APP)), arming communication between the munition explosive and the S&A device is prevented. In a second switch position (an arming enabling position (AEP)), arming communication between the munition explosive and the S&A device is allowed. The actuation mechanism is configured for selectively moving the switch member at least from the APP to the AEP to thereby enable the S&A device, when armed, to detonate the munition explosive via the switch member.

The invention relates to a fuze for a gyratory projectile, including a striker holder movable about a rocker axis perpendicular to the axis of symmetry of the fuze, a primer holder rotatable about an axis of rotation parallel to the axis of symmetry, and a self-destruction device. The latter includes an SD mechanism using the linear acceleration of the projectile upon the departure of the shot to store axial kinetic energy, and a safety mechanism using the centrifugal effects of the projectile during the flight to store radial kinetic energy. The two mechanisms cooperate with each other, and with the striker holder and the primer holder to generate the different storage positions before firing, intermediate upon the departure of the shot, cocked during the flight and of self-destruction at the end of the flight, guaranteeing maximum safety of the projectile in the storage position and maximum responsiveness of the projectile regardless of the scenario encountered during ballistic firing.

The invention relates to a fuze for a gyratory projectile, including a striker holder movable about a rocker axis perpendicular to the axis of symmetry of the fuze, a primer holder rotatable about an axis of rotation parallel to the axis of symmetry, and a self-destruction device. The latter includes an SD mechanism using the linear acceleration of the projectile upon the departure of the shot to store axial kinetic energy, and a safety mechanism using the centrifugal effects of the projectile during the flight to store radial kinetic energy. The two mechanisms cooperate with each other, and with the striker holder and the primer holder to generate the different storage positions before firing, intermediate upon the departure of the shot, cocked during the flight and of self-destruction at the end of the flight, guaranteeing maximum safety of the projectile in the storage position and maximum responsiveness of the projectile regardless of the scenario encountered during ballistic firing.

A mechanical self-percussion fuze for a non-gyrating ammunition includes a firing pin disposed along a central axis and a primer provided in a primer holder. The primer holder is movable about an axis of rotation that is parallel and off-centered with respect to the central axis between a storage position in which the primer is off-centered with respect to the firing pin and an armed position in which the primer is aligned with the firing pin and safety devices coupled to the primer holder in order to keep the fuze in a safe state until at least two mutually independent physical phenomena linked to the firing of the ammunition occur. The fuze has a wind turbine designed to be driven in rotation by the relative movement of the air during the flight of the ammunition and to transmit this rotational movement to the primer holder only after the safety devices have been removed.

A mechanical self-percussion fuze for a non-gyrating ammunition includes a firing pin disposed along a central axis and a primer provided in a primer holder. The primer holder is movable about an axis of rotation that is parallel and off-centered with respect to the central axis between a storage position in which the primer is off-centered with respect to the firing pin and an armed position in which the primer is aligned with the firing pin and safety devices coupled to the primer holder in order to keep the fuze in a safe state until at least two mutually independent physical phenomena linked to the firing of the ammunition occur. The fuze has a wind turbine designed to be driven in rotation by the relative movement of the air during the flight of the ammunition and to transmit this rotational movement to the primer holder only after the safety devices have been removed.

The invention relates to a mechanical self-percussion fuze (1) for a non-spinning round, having a firing pin (14) disposed along a central axis (A), a primer (17) provided in a primer holder (17) that is movable about an axis of rotation (B) that is parallel and off-centre with respect to the central axis (A) between a storage position in which the primer (17) is off-centre with respect to the firing pin (14) and an armed position in which the primer (17) is aligned with the firing pin (14), and safety devices coupled to the primer holder (17) in order to keep the fuze (1) in a safe state until at least two mutually independent physical phenomena linked to the firing of the round occur. The fuze (1) has a wind turbine (11) designed to be driven in rotation by the relative movement of the air during the flight of the round and to transmit this rotational movement to the primer holder (17) only after the safety devices have been removed.

The invention relates to a mechanical self-percussion fuze (1) for a non-spinning round, having a firing pin (14) disposed along a central axis (A), a primer (17) provided in a primer holder (17) that is movable about an axis of rotation (B) that is parallel and off-centre with respect to the central axis (A) between a storage position in which the primer (17) is off-centre with respect to the firing pin (14) and an armed position in which the primer (17) is aligned with the firing pin (14), and safety devices coupled to the primer holder (17) in order to keep the fuze (1) in a safe state until at least two mutually independent physical phenomena linked to the firing of the round occur. The fuze (1) has a wind turbine (11) designed to be driven in rotation by the relative movement of the air during the flight of the round and to transmit this rotational movement to the primer holder (17) only after the safety devices have been removed.

An arming and safety device for a pyrotechnic chain, the device including a housing presenting an inlet zone for a pyrotechnic stream and an outlet zone for the pyrotechnic stream, an arming element housed in the housing between the inlet and outlet zones and adapted to move between a disarmed position in which it blocks the passage of the pyrotechnic stream and an armed position in which it allows the pyrotechnic stream to pass, and an electric motor for driving the arming element. The stator of the electric motor is situated outside the housing, and the rotor is contained entirely inside the housing.