Rocket Fuel Tank | GRHardnessTester.comA new type of rocket fuel tank made up of lightweight composites was created in an attempt to decrease the weight of rockets.  NASA recently conducted tests on the new tank to determine its compatibility with harsh conditions.  The tests included one that stimulated physical stress and another that stimulated low temperatures and different pressures.  A high performance tank like this could cut costs of production and also reduce the weight of rockets.

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