An extended range projectile includes an outer shell, a center projectile body axially moveable from a stowed position to a deployed position within the outer shell, and a pusher plate assembly variably locked to an aft end of the outer shell. The pusher plate assembly includes a check valve disposed at an aft end of the pusher plate assembly, the check valve being moveable from a closed position to an open position. In the open position of the check valve, the check valve is configured to permit entry of a gunfire pressure, created in a barrel of a gun from which the extended range projectile is configured to be projected, into the pusher plate assembly such that, when the extended range projectile exits the barrel, the gunfire pressure moves the center projectile body from the stowed position to the deployed position and propels the extended range projectile.

According to an aspect of the invention, there is provided a fuze arming system for a submunition, comprising: a first stage, arranged to detect launch of the submunition and its associated carrier; a second stage, arranged to detect expulsion of the submunition from the carrier, and to at least partially arm a submunition fuze based on such detection; wherein the second stage is unable to at least partially arm the submunition fuze without the first stage detecting launch of the submunition and its associated carrier.

According to an aspect of the invention, there is provided a fuze arming system for a submunition, comprising: a first stage, arranged to detect launch of the submunition and its associated carrier; a second stage, arranged to detect expulsion of the submunition from the carrier, and to at least partially arm a submunition fuze based on such detection; wherein the second stage is unable to at least partially arm the submunition fuze without the first stage detecting launch of the submunition and its associated carrier.

A method for modifying a separable projectile between a test embodiment or an effect embodiment includes detaching the front projectile body from the rear projectile body, arranging a payload container in the front projectile body where the payload container comprises measuring equipment or an effect part, and fitting the front projectile body to the rear projectile body by way of a belt. A separable projectile which can be modified between a test embodiment and an effect embodiment is also provided.

An article ejection structure is disclosed, having a housing, and a first biasing member positioned in the housing and having a first biasing force biasing the first biasing member toward a first neutral position to drive a rupture structure to rupture the housing. A release member restricts the first biasing member from moving toward the first neutral position when the release member is in a lock state, and is conditionable to a release state, in which the release member at least partially releases the first biasing member to move toward the first neutral position and drive the ejection structure to rupture the housing. A second biasing member positioned in the housing, the second biasing member having a second biasing force biasing the second biasing member toward a second neutral position to drive an article positioned in the housing out of the housing when the housing is ruptured.

Launching an aeronautical system can comprise applying force or energy to the system in connection with accelerating the system. Responsive to the force or energy, an element of the system can move along a defined path within the system. The system can comprise a drive that converts motion along the defined path into rotational motion. The drive can rotate a mass within the system, which can be supported by a gas bearing. The rotating mass can comprise the moving element, a different system element, or the entire system. The rotating mass can produce angular momentum and can support gyroscopic stabilization of the aeronautical system. Rotational energy can be selectively imparted to and transferred between system elements in connection with stabilization management. System elements can moderate the system's response to impulsive stimuli associated with rotation and acceleration. A gas bearing can support an external surface of the system during launch.

An article ejection structure is disclosed, having a housing, and a first biasing member positioned in the housing and having a first biasing force biasing the first biasing member toward a first neutral position to drive a rupture structure to rupture the housing. A release member restricts the first biasing member from moving toward the first neutral position when the release member is in a lock state, and is conditionable to a release state, in which the release member at least partially releases the first biasing member to move toward the first neutral position and drive the ejection structure to rupture the housing. A second biasing member positioned in the housing, the second biasing member having a second biasing force biasing the second biasing member toward a second neutral position to drive an article positioned in the housing out of the housing when the housing is ruptured.

The present invention relates to an arrow device with dual destructive function which provides a second extended destruction by explosion of explosives carried within the arrow device in addition to a penetrative destruction caused by kinetic energy of an arrow. The arrow device with dual destructive function comprises an arrow body and an arrowhead, wherein the arrow body comprises a hollow tube, the hollow tube is provided with an inertial body therein, the arrowhead is of a hollow structure and is provided with a hole structure communicating the hollow structure of the arrowhead with the outside. The hollow structure of the arrowhead is equipped with explosives or ammunition therein. An isolation mechanism is provided between the arrowhead and the hollow tube of the arrow body. A firing mechanism for firing explosives or ammunition is provided on the isolation mechanism or the front end of the inertia body.

An article ejection structure is disclosed, having a housing, and a first biasing member positioned in the housing and having a first biasing force biasing the first biasing member toward a first neutral position to drive a rupture structure to rupture the housing. A release member restricts the first biasing member from moving toward the first neutral position when the release member is in a lock state, and is conditionable to a release state, in which the release member at least partially releases the first biasing member to move toward the first neutral position and drive the ejection structure to rupture the housing. A second biasing member positioned in the housing, the second biasing member having a second biasing force biasing the second biasing member toward a second neutral position to drive an article positioned in the housing out of the housing when the housing is ruptured.

A warhead assembly is provided for a projectile includes a forward module having a precursor warhead, and an aft module including a main warhead. The warhead assembly includes a deployment system for selectively deploying the warhead assembly from a retracted configuration to a deployed configuration, at predetermined conditions, to thereby provide a longitudinal displacement between the forward module and the aft module. The deployment system includes an expansion member accommodated between the forward module and the aft module, and configured for being longitudinally expanded under the predetermined conditions to thereby increase a longitudinal dimension of the expansion member and thereby urge the forward module and the aft module away from one another to provide said longitudinal displacement. A corresponding deployment system and projectile are also provided.