Metallic Gas Barrier
An aluminum-based liner forms the gas-containing core, providing a metallic foundation for the composite vessel.
OUR TECHNOLOGY
Type 3 Composite Overwrapped Pressure Vessels
VNZT is developing a patented Type 3 composite pressure vessel concept intended to support lighter, high-pressure gas storage. Our work connects structural design, manufacturability, and a pathway toward prototype testing and regulatory qualification.
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Aluminum alloy linerMetallic gas barrier forming the vessel's internal containment structure.
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Metallic end capsPatented approach to the metallic liner and end-cap assembly.
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Carbon-fiber reinforcementFilament-wound reinforcement of the vessel assembly, intended to alleviate high stresses in the dome area.
Development-stage technology
From Prototype to Qualified Product
VNZT has described earlier 9-liter prototype work at a nominal 350-bar design pressure and is evaluating a pathway toward cylinder capacities up to 60 liters.
Product testing, qualification, and applicable U.S. DOT/PHMSA authorizations are development objectives; they are not represented here as completed certifications.
Discuss technical collaboration →ENGINEERING IN DETAIL
From Metal Liner to Composite Vessel
Explore the proposed vessel assembly sequence in the engineering illustration below, from the initial metal tube to the completed filament-wound structure.
VNZT Type 3 COPV assembly concept · Illustration for engineering communication; not evidence of certification.
DESIGNED FOR THE NEXT GENERATIONTHREE ENGINEERING STEPS
THREE ENGINEERING STEPS
ONE INTEGRATED VESSEL
The full assembly sequence appears above. Here, explore the three structural ideas that shape VNZT's development approach.
Metallic End Caps
The patented approach uses separately produced metallic end caps integrated with the contoured liner.
Carbon-fiber Overwrap
Filament-wound reinforcement covers the vessel assembly, including the metallic end caps, leaving only the nozzles exposed. The purpose is to alleviate the high stresses in the dome area.
ENGINEERING CONCEPT · DEVELOPMENT STAGEExplore the patented architecture
ENGINEERING FOCUS
Engineering Focus: From Design to Validation
Structural Analysis and Stress Distribution
Evaluate pressure-induced stresses, particularly in critical transition regions, to inform design decisions and identify areas requiring further investigation.
Materials and Manufacturing Development
Assess material selection, fabrication methods, and filament-winding parameters with attention to repeatability and practical manufacturing requirements.
Prototype Testing and Qualification
Plan prototype evaluation, structural testing, and the documentation needed to support applicable standards and regulatory qualification pathways.
All performance figures, design targets, and proposed applications are subject to engineering verification and applicable regulatory qualification. No commercial certification is implied.