Method of synchronizing fin fold-out on a fin-stabilized...

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

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F42B 10/14 (2006.01)

Patent

CA 2441277

The present invention relates to a method of as far as possible limiting the yawing motion on the trajectory of an artillery shell(1), provided during the firing phase with a sliding driving band and completely folded-in guide fins (3, 16), which shell, as soon as possible outside the mouth of the barrel of the firing piece, is converted, by fold-out of the guide fins (3, 16), into a fin-stabilized artillery shell, any form of non-uniform fin fold-out being avoided by virtue of all the guide fins (3, 16) being interconnected, by means (18, 19, 20) adapted thereto, to form a system which gives all the fins (3, 16) the same movement pattern and the same fold-out speed in each phase of fin fold-out. The invention also includes a shell (1) designed in accordance therewith, in which the means for synchronization of fin fold-out consists of a rotatable control ring (19) which is arranged around the axis of the shell and is connected to the rotation spindles (13) of all the fins.

L'invention concerne un procédé qui limite autant que possible le mouvement de lacet sur la trajectoire d'un obus (1) au cours de la phase de mise à feu, via une ceinture de projectile et des ailettes de guidage (3, 16) complètement repliées. L'obus, promptement expulsé de l'orifice du canon du système de tir, est converti sous l'effet du déploiement des ailettes de guidage (3, 16) en obus d'artillerie stabilisé par ailettes. L'interconnexion de l'ensemble des ailettes (3, 16) permet d'empêcher toute forme de déploiement non uniforme. L'interconnexion est assurée par un dispositif (18, 19, 20) adapté en vue d'obtenir un système qui confère à l'ensemble des ailettes (3, 16) le même type de mouvement et la même vitesse de déploiement à chaque phase de déploiement. Par ailleurs, l'invention concerne un obus (1) conçu conformément à ce qui précède, dans lequel le dispositif de synchronisation du déploiement des ailettes consiste en un anneau de commande rotatif (19) appliqué autour de l'axe de l'obus et relié aux fusées de roues (13) de l'ensemble des ailettes.

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