Simmonds Precision Products, Inc.

Space Research Corporation

Dennis Hyatt Jenkins

Jim Byrne

Paul Martin Franz

John Christiana

Tom Kelly

Luis Palacio

Paul Franz

A Reconfigurable Nose Control System (RNCS) is designed to adjust the flight path of spin-stabilized artillery projectiles. The RNCS uses the surface of a projectile nose cone as a trim tab. The nose cone may be despun by the action of aerodynamic surfaces, to zero spin relative to earth fixed coordinates using local air flow, and deflected by a simple rotary motion of a Divert Motor about the longitudinal axis of the projectile. A forward section of the nose cone having an ogive is mounted at an angle to the longitudinal axis of the projectile, forming an axial offset of an axis of the forward section with respect to the longitudinal axis of the projectile. Another section of the nose cone includes another motor, the Roll Generator Motor, that is rotationally decoupled from the forward section and rotates the deflected forward section so that its axis may be pointed in any direction within its range of motion. Accordingly, deflection and direction of the forward section may be modulated by combined action of the motors during flight of the projectile.

Spin stabilized projectile trajectory control

A gun-fired spin-stabilized projectile of good aerodynamic shape (i.e. with a long forward tapering section) is centered in the gun barrel at its forward end by means of a series of circumferentially spaced apart permanently fixed radially extending projections, and at its rearward end, by means of either the maximum diameter of the projectile body or by means of a driving band mounted on a rear portion of the body. In the latter case, the maximum diameter of the projectile body is slightly less than the diameter lands of the gun and the driving band is constructed in such a manner as to be separated from the body after firing by centrifugal force and air drag.

Spin-stabilized projectiles

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Newport, VT, United States of America

Dennis Hyatt Jenkins