Bae Systems Bofors Ab

Sven Strömberg

Lars-Peter Svanberg

Johan Lidgren

Andreas Nilsson

Lars-Ake Carlqvist

Lars-Åke Carlqvist

Peter Engman

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

The invention relates to a projectile () provided with a slipping rotating band () which is designed for firing from a weapon system with a rifled barrel. The rotating band () comprises an inner ring () and an outer ring () that seals against the barrel. The outer ring is fitted on the outer surface of the inner ring and the inner ring is slippably fitted on the projectile. The rotating band () is configured to remain fitted on the projectile () from launcher to target by virtue of the fact that the inner ring () is made of fibre-reinforced polymer composite or particle-reinforced polymer composite, or fibre-reinforced metal matrix composite or particle-reinforced metal matrix composite. The invention also relates to a slipping rotating band () and to a method for producing a slipping rotating band () in which the outer ring () is affixed to the inner ring ().

Permanent slipping rotating band and method for producing such a band

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Karlskoga, Sweden

Sven Strömberg