US Government As Represented by the Secretary of the Army

Sandor I Einstein

Donald S Chiu

Alexander Colletti

Adriana Eng

A mortar system includes a launch unit that comprises a mortar ignition cartridge provided with a flashtube. The flashtube incorporates a ring-like nozzle that is positioned within the flashtube, which acts to restrain the motion of the black powder pellets as well as to choke the flow of the resultant combustion products. The nozzle separates the flashtube into two compartments: a flashtube venting chamber and a pellet combustion chamber. The mortar ignition cartridge combustion chamber acts as the product-gas venting area of the flashtube. The combustion of the black powder pellets essentially takes place in the pellet combustion chamber. The present design modification improves the overall performance of the mortar system.

Nozzled mortar ignition system for improved performance

A modular propellant charge for semi-fixed ammunition is disclosed. The propellant charge is disposed within an ammunition cartridge canister, and permits direct access to each charge increment. Further, the propellant charge comprises at least one charge increment comprising a rigid section of a cylindrical solid of rotation, and each charge increment has a length less than the central cavity of said ammunition canister.

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Denville, NJ, United States of America

Sandor I Einstein