US Government as Represented by the Secretary of the Army

Mitchell Stolk

Ryan Hooke

Oscar N Ruiz

Thomas Recchia

Jeffrey R Kraft

Jack Pincay

Gerard Voorhis

James Hamfeldt

David Hosier

Yin Chen

Gordon Cheung

Tu-Nhi Nguyen

Gregory Nieradka

Sarah Hunt

Eugene Schlenk

Donna Snyder

Frank Munoz

Brett Barnes

Andrew Maulbeck

Pressure relief holes are sized and positioned on each fin of a projectile to allow high pressure from one side of the fin due to canard and fin interaction to bleed to a low pressure area on the opposite side of the fin. The location of the pressure relief holes target pressure differences due to canard roll control downwash while not affecting pressure differences due to projectile attitude. The fin planform area remains small enough to meet packaging and fire requirements for this type of munition and large enough to aerodynamically stabilize the airframe thereby enabling a more robust pitch and yaw autopilot design.

Pressure relief fins for improved roll control of precision projectiles

A mortar ammunition round which contains at least three fragment producing regions covered by a threadably removable aluminum cowling. Detachment of the cowling provides access to several of the fragment producing regions which are located on a removable cup device. A different cup device may then be selectively inserted and the cowling replaced, forming a new mortar round of different select performance capabilities.

81mm increased lethality projectile

Growing community of inventors

Kearny, NJ, United States of America

Mitchell Stolk