Two-piece aft closure for a rocket motor case

Details Two-piece aft closure for a rocket motor case Two-piece aft closure for a rocket motor case

F - Mech Eng,Light,Heat,Weapons

16

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F16J 13/02 (2006.01) B65D 53/00 (2006.01) F02K 9/32 (2006.01) F02K 9/60 (2006.01) F02K 9/97 (2006.01) F16J 10/00 (2006.01) F16J 15/06 (2006.01)

Patent

CA 2670598

An aft closure assembly manufactured from two separate and distinct pieces made from different materials is provided for a rocket motor case. The aft closure assembly includes at least a retaining ring piece made from a first material similar to or having a coefficient of thermal expansion similar to that of the motor case. The aft closure assembly includes a blast tube and closure piece that can be manufactured from a second material that does not need to be similar to nor have a coefficient of thermal expansion similar to the motor case and retaining ring piece. This is possible because the blast tube and closure piece includes a face seal that seals against a face of the retaining ring.

L'invention concerne une enveloppe arrière comportant deux pièces séparées et distinctes réalisées dans des matériaux différents pour un carter de moteur-fusée. L'ensemble enveloppe arrière comprend au moins une pièce anneau de retenue constituée d'un premier matériau similaire à celui du carter de moteur ou ayant un coefficient d'expansion thermique similaire à celui-ci. L'ensemble enveloppe arrière comprend une tube d'air et une pièce enveloppe réalisés dans un deuxième matériau ne devant pas nécessairement être similaire ni avoir un coefficient d'expansion thermique similaire à celui de l'enveloppe du moteur et de la pièce anneau de retenue. Cela est possible car le tube d'air et la pièce enveloppe comprennent un joint qui assure l'étanchéité sur une face de l'anneau de retenue.

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