A canard deployment mechanism includes a canard connected to a shaft that is hingedly attached to a rotatable hub that is moveable between a stowed and deployed position. The mechanism further includes a locking feature on the canard for restraining the canard in the stowed position. In an embodiment the mechanism further includes a pawl rotatably mounted on a drive gear to contact and restrain the canard in the stowed position.

In accordance with at least one aspect of this disclosure, an actuation system for a guided munition, includes a reservoir disposed in a guided munition body housing a compressible fluid in a compressed state, a fluid path connecting the reservoir in fluid communication with a heat exchange volume, a throttling orifice disposed in the fluid path configured to expand the compressible fluid, and an actuation path connecting the heat exchange volume in fluid communication with a moveable component. The actuation path can be configured to supply pneumatic pressure to the moveable components.

In accordance with at least one aspect of this disclosure, an actuation system for a guided munition, includes a reservoir disposed in a guided munition body housing a compressible fluid in a compressed state, a fluid path connecting the reservoir in fluid communication with a heat exchange volume, a throttling orifice disposed in the fluid path configured to expand the compressible fluid, and an actuation path connecting the heat exchange volume in fluid communication with a moveable component. The actuation path can be configured to supply pneumatic pressure to the moveable components.

An improved fin retention and release mechanism (15) comprising an elongated body (16), at least one fin (18a) mounted to the body and capable of moving from a stowed position (30) to a deployed position (32), an actuator (20a) connected to the fin and arranged to rotate the fin about a first axis (33), a fin retention member (19a) connected to the body and configured and arranged to rotate about a second axis (34) from a locked position (36) to a release position (38), the fin and the fin retention member configured and arranged such that the fin is held in the stowed position by the fin retention member when being in the locked position and the fin is not held in the stowed position by the fin retention member when being in the release position, and wherein actuation of the fin about the first axis by the actuator rotates the fin about the first axis in a first direction (39) and correspondingly rotates the fin retention member about the second axis in a second direction (40) opposite to the first direction and from the locked position to the release position.

A canard deployment mechanism includes a canard connected to a shaft that is hingedly attached to a rotatable hub that is moveable between a stowed and deployed position. The mechanism further includes a locking feature on the canard for restraining the canard in the stowed position. In an embodiment the mechanism further includes a pawl rotatably mounted on a drive gear to contact and restrain the canard in the stowed position.

A tail boom for a gun-launched projectile includes a boom housing and a cap fixed to a rear end of the boom housing. A piston is translatable in the housing by the force of a compression spring. A plurality of fins are rotatably fixed to the boom housing. Each fin includes a protruding portion that extends into a translation path of the piston. The cap includes a guide bore for the piston stem to maintain alignment of the piston. The piston presses on the protruding portion of the fins, causing the fins to rotate about their hinge points into a deployed position.

A tail boom for a gun-launched projectile includes a boom housing and a cap fixed to a rear end of the boom housing. A piston is translatable in the housing by the force of a compression spring. A plurality of fins are rotatably fixed to the boom housing. Each fin includes a protruding portion that extends into a translation path of the piston. The cap includes a guide bore for the piston stem to maintain alignment of the piston. The piston presses on the protruding portion of the fins, causing the fins to rotate about their hinge points into a deployed position.

An improved fin retention and release mechanism (15) comprising an elongated body (16), at least one fin (18a) mounted to the body and capable of moving from a stowed position (30) to a deployed position (32), an actuator (20a) connected to the fin and arranged to rotate the fin about a first axis (33), a fin retention member (19a) connected to the body and configured and arranged to rotate about a second axis (34) from a locked position (36) to a release position (38), the fin and the fin retention member configured and arranged such that the fm is held in the stowed position by the fin retention member when being in the locked position and the fin is not held in the stowed position by the fm retention member when being in the release position, and wherein actuation of the fin about the first axis by the actuator rotates the fm about the first axis in a first direction (39) and correspondingly rotates the fin retention member about the second axis in a second direction (40) opposite to the first direction and from the locked position to the release position.

A projectile including a jacket, a core and a stabilizer part, the stabilizer part including a shaft and a fin part fastened to the shaft at the first end of the stabilizer part, whereby in the core of the projectile is a cylindrical cavity, which is closed at least partly with a shutoff part in which shutoff part is an aperture for the shaft of the stabilizer part, whereby a piston is fastened to the second end of the shaft of the stabilizer part, which piston is disposed in a cavity for forming a space at the front end of the piston and through the shaft of the stabilizer part a channel passes into the space and in the front part of the cavity is a solid fuel, which is made to ignite by means of the powder pressure produced in conjunction with firing of the projectile.

A projectile including a jacket, a core and a stabilizer part, the stabilizer part including a shaft and a fin part fastened to the shaft at the first end of the stabilizer part, whereby in the core of the projectile is a cylindrical cavity, which is closed at least partly with a shutoff part in which shutoff part is an aperture for the shaft of the stabilizer part, whereby a piston is fastened to the second end of the shaft of the stabilizer part, which piston is disposed in a cavity for forming a space at the front end of the piston and through the shaft of the stabilizer part a channel passes into the space and in the front part of the cavity is a solid fuel, which is made to ignite by means of the powder pressure produced in conjunction with firing of the projectile.