Terminally corrected projectile

US4176814A · kind A · utility

Assignee

• AB Bofors

Inventors

• Kjell Albrektsson · Karlskoga, SE
• Bertil Eriksson · Bissenkamp, SE
• Sven Willner Eriksson
• Hans A. E. Franzen · Karlskoga, SE
• Rolf H. Sandlin

Key dates

• Filing date: Mar 11, 1977
• Grant date: Dec 4, 1979
• Expiry date: Mar 11, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F42B10/663
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

An apparatus for correcting the terminal portion of the ballistic trajectory of a projectile. The projectile is initially fired at a target in a manner to cause the projectile to rotate in flight. At least one detector is mounted on a front surface of the rotating projectile to rotate with the projectile and scan the target area in a spiral pattern. A laser beam is directed to hit the target and a reflected portion of the beam energizes the scanning detector. The energized detector transmits an ignition signal to activate a trajectory correction motor and an associated nozzle having a plug that is weakened in response to the signal. The activated motor operates during the terminal portion of the trajectory to generate a thrust pulse that is passed through the nozzle having the weakened plug. The thrust pulse is directed by the nozzle to correct the trajectory of the projectile.