Composite rocket motor with integrated composite fins, and...

Details Composite rocket motor with integrated composite fins, and... Composite rocket motor with integrated composite fins, and...

F - Mech Eng,Light,Heat,Weapons

02

K

26/151, 60/74

F02K 9/32 (2006.01) F02K 9/34 (2006.01) F42B 10/04 (2006.01)

Patent

CA 1332027

ABSTRACT OF THE DISCLOSURE A tubular preform (10), fins (30), and fin supports (20) are made independently, with the fins and the fin supports being made by laying fibrous cloth impregnated with polymer- izable binder to take up the appropriate shapes, and then polymerizing the binder, whereas the tubular preform is made by winding a thread impregnated with a polymerizable binder. Each fin support has a base integrated with the periphery of the tubular preform, and has fin attachment portions projecting from its base, with the bases of the fin supports and the periphery of the tubular preform being shaped in such a manner as to ensure circumferential continuity of the structure. The fin supports are integrated with the tubular preform by gluing together with at least one position of localized overwinding at the gaps in the fin supports between the fine attachment portions, thereby providing a preform which is smooth in structure both inside and outside. The assembly constituted by the tubular preform, the fin supports, and the overwinding is polymerized in order to obtain a tube for constituting a rocket, and the fins are subsequently assembled to the fin support by gluing the sides of the fins onto the attachment portions of the fin supports.

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