Actuators for Gun-Fired Projectiles and Mortars

A projectile comprising;

• an actuator stack disposed in or on a casing of the projectile, the actuator stack comprising:
• a stack housing;
• two or more individual actuators movably disposed in the stack housing;
• a separation layer formed between adjacent individual actuators;
• an accelerating nozzle having at least a convergent section terminating at a throat;
• and
• a biasing member for biasing the two or more individual actuators towards the accelerating nozzle.

A method for providing actuation thrust to a projectile, the method comprising:

• providing two or more individual actuators movably disposed in a stack housing, each of the two or more individual actuators being separated by a separation layer;
• accelerating exhaust from the two or more individual actuators with an accelerating nozzle having at least a convergent section terminating at a throat;
• and
• maintaining a constant volume in the accelerating nozzle after actuation of each of the two or more individual actuators.