Successful tests of an all-composite cryogenic fuel tank for space launch vehicles hold promise for lower-cost access to space, perhaps before the decade is out. A small composite fuel tank fabricated by Boeing with funding from the “game-changing” program of NASA’s Space Technology Mission Directorate contained 2,091 gal. of liquid hydrogen through a series of shifts in its internal pressure and three temperature cycles ranging from ambient down to minus 423F. The June 25 test ...

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