High performance, thin metal lined, composite overwrapped pressure vessel
First Claim
1. A method of manufacturing a composite overwrapped pressure vessel, comprising the following steps:
- (a) using spin forming, making a liner having first and second dome portions and a cylindrical portion made of a metal having a tensile yield strengthened p.s.i./tensile modulus of elasticity in p.s.i.(FTY /E) of at least 0.6% and a ductility of at least 5%;
(b) forming first and second bosses made of the metal, the first boss being connected to the first dome portion and the second boss being connected to the second dome portion; and
(c) applying a composite overwrap over the liner, applying filaments of the overwrap onto the liner.
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Accused Products
Abstract
An innovative technology for composite overwrapped pressure vessels (COPVs) has been developed which significantly increases cost effectiveness, increases reliability, and reduces weight over state-of-the-art COPVs. This technology combines an innovative thin liner made of a metal having a high modulus of elasticity and a high ductility, a high-performance composite overwrap and a high-performance film adhesive at the overwrap/liner interface. The metal liner can be fabricated from readily available titanium alloy sheet and plate using a combination of spin forming and machining to fabricate components and electron-beam welding for tank assembly. The composite overwrap is filament-wound onto an adhesive-covered titanium liner and the overwrap and adhesive are co-cured in an oven to yield an integrated tank structure.
125 Citations
19 Claims
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1. A method of manufacturing a composite overwrapped pressure vessel, comprising the following steps:
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(a) using spin forming, making a liner having first and second dome portions and a cylindrical portion made of a metal having a tensile yield strengthened p.s.i./tensile modulus of elasticity in p.s.i.(FTY /E) of at least 0.6% and a ductility of at least 5%; (b) forming first and second bosses made of the metal, the first boss being connected to the first dome portion and the second boss being connected to the second dome portion; and (c) applying a composite overwrap over the liner, applying filaments of the overwrap onto the liner. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification