US Government As Represented by the Secretary of the Army

Ryan Ordemann

Viral Panchal

Joseph M Laquidara

Carlton Adam

Dongkyun Park

Robin Crownover

The present invention is directed to propellant grains having multiple layers consisting of an outer, slow burning, layer composition and an inner, fast burning, layer with desirable progressivity burn rates. The outer, slow burning, layer comprising a first energetic material, a first plasticizer and a first binder and an inner, fast burning, layer comprising a second energetic material, and the same plasticizer as the outer layer, and a second binder. The compositions in the propellant grain provided herein provides for a burn rate energy differential between the outer, slow burning, layer and inner, fast burning, layer of at least 2.

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Verona, NJ, United States of America

Ryan Ordemann