Bae Systems Bofors Ab

Bofors Ab

Peter Engman

Jan Axinger

Björn Johansson

Lars-Peter Svanberg

Lars-Ake Carlqvist

Sven Strömberg

Johan Lidgren

The invention relates to a fin deployment mechanism () comprising a base unit (), deployable fins () movably arranged on the base unit () and, in the retracted position, bearing against the base unit (), as well as a gas-generating device, in which the fins in the retracted position are fixed to the base unit, and in which at least one gas duct () is arranged in the base unit () so as to conduct pressurized gas generated by the gas-generating device to the bottom side of the fins (), which in the retracted position bear against the base unit (), in order to create a force which acts on the fins () for deployment of the same ('). The invention further relates to an artillery projectile comprising a fin deployment mechanism.

Fin deployment mechanism and projectile with such a mechanism

A sub-combat unit is arranged to be separated from a flying body over a target area, and includes a warhead, a target detector and two diametrically disposed carrier surfaces, each connected to a carrier arm and pivotally disposed about its own shaft located in a plane which is normal to the line of symmetry of the warhead and pivotable from a collapsed position in which the carrier arms and carrier surfaces connect to the circumferencial surface of the sub-combat unit, and to a position opened at 90.degree. at which both of the carrier surfaces form a retarding area for the fall velocity of the sub-combat unit and to impart to the sub-combat unit a rotation for scanning the target area in a helical pattern during the fall of the sub-combat unit towards the target area. Compressible damping devices are provided on the casing of the sub-combat unit which are compressed by the carrier arms during the flip-out movement of the carrier surfaces, and return stops for retaining the carrier arms and the carrier surfaces in a final flip-out position.

Sub-combat units

Growing community of inventors

Karlskoga, Sweden

Peter Engman