US Government As Represented by the Secretary of the Army

Alex Michlin

Alex Smith

Tim Brosseau

A small lightweight weapon system for integration into an unmanned aerial vehicle comprises a weapon operating group which utilizes blowback operation to fire a full-powered centerfire rifle ammunition. An operating rod of the weapon operating group has an axis of translation offset from the longitudinal axis of the barrel thereby creating a moment couple on the system. A motor assembly controls the operation of the weapon operating group. Through a gear train, actuation of the motor assembly lifts a sear against a return torsion spring, which holds the operating group back when not firing. The gear train comprises a one way flywheel disconnect to increase the torque of the direct current motor and overcome the force of the torsion spring. Intelligent motor commutation and burst control are achieved through an encoder and software package.

Full power blow-back gun with crash safety for lightweight application

Full power blow-back gun for lightweight application

A system for reducing an extraction force required for removing a spent munition cartridge case from a weapon after firing, the system including a chamber; and a plurality of movable components in the chamber that are configured to radially expand with a corresponding expansion of a fired munition cartridge case, wherein radial expansion of the plurality of movable components causes a rearward force on the plurality of movable components and the spent munition cartridge case. The chamber may include a tapered wall, and the plurality of movable components may matingly align with the tapered wall. The plurality of movable components may align with one another. Each movable component may include a tapered outer surface comprising an angle greater than an angle of an outer surface of a pre-fired cartridge case.

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Whiteford, MD, United States of America

Alex Michlin