Means for increasing the drag on a munition

F - Mech Eng,Light,Heat,Weapons – 42 – B

Patent

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F42B 10/50 (2006.01)

Patent

CA 2258544

A means for increasing the drag of a munition to effect a course correction having coplanar interlocking pairs of drag plates (24, 26) being laterally extendable from an undeployed configuration, substantially contained within the munition, to a deployed configuration. The drag plates (101, 103) are provided with projections (34, 38) and slots (36, 40), the projections (34, 38) of one of a pair of drag plates being adapted to locate in the slots (34, 40) of the other drag plate in the undeployed configuration and being adapted such that they extend beyond halfway into the munition. A deployment means (60, 62, 70, 72) retains the drag plates in the undeployed configuration until receipt of a control signal and then effects deployment of the drag plates, the distance travelled between the deployed and undeployed configurations being determined by the extent of the projections (34, 38).

Moyen servant à augmenter la traînée d'un projectile, afin d'effectuer une correction de course, et possédant des paires de plaques de traînée (24, 26) à verrouillage réciproque situées dans le même plan et pouvant s'étendre latéralement depuis une configuration non déployée, sensiblement contenue à l'intérieur du projectile, vers une configuration déployée. Ces plaques de traînée (101, 103) sont pourvues de saillies (34, 38) et de fentes (36, 40), les saillies (34, 38) de l'une des paires de plaques de traînées étant conçues de façon à loger dans les fentes (36, 40) de l'autre plaque de traînée dans la configuration non déployée et à s'étendre à mi-course à l'intérieur du projectile. Un moyen de déploiement (60, 62, 70, 72) retient les plaques de traînée en configuration non déployée jusqu'à la réception d'un signal de commande, puis effectue le déploiement des plaques de traînée, la distance parcourue entre les configurations déployée et non déployée étant déterminée par la longueur des saillies (34, 38).

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