High strength fibers for hydrogen storage on the VentureStar.
Hoop stresses of a tube under pressure increase with the diameter but
volume increases with the square of diameter. �High volume/weight
pressurised gas storage would, therefore, favor a bigger cylinder.
. . .
Container weight scales with area times thickness, and
thickness scales with hoop stress,
But the area and volume increase with the diameter _squared_.
Bret Cahill
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