Composite pressure vessels, used extensively for gas and fuel containment in space vehicles, are generally constructed with a metallic liner, the fiber reinforcement carrying the major portion of the pressure-induced load. The design is dominated by the liner's low strain at yield since the reinforcing fibers cannot operate at their potential load-bearing capability without resorting to pre-stressing (or autofrettaging). For pressure vessels with relatively large radius-to-wall thickness (R/t) ratios, pre-stressing may not be feasible. An ultra high-efficiency pressure vessel, which operates at the optimum strain capability of the fibers, can be potentially achieved with a "liner-less" construction. This paper reviews the design and manufacturing challenges to be overcome in the development of such a pressure vessel. These include: (1) gas/liquid containment and permeation, (2) defining the end fitting design in order to transfer the pressure load acting on it into the composite shell. (3) manufacturing processes.
The design of composite pressurized tanks with and without liners for use in space applications
2001
12 Seiten, 7 Quellen
Aufsatz (Konferenz)
Englisch
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