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A long cylindrical thin-wall rocket fuel tank is made of aluminum. The tank dimensions include a radius (R = 58 inch), a length (L =
A long cylindrical thin-wall rocket fuel tank is made of aluminum. The tank dimensions include a radius (R = 58 inch), a length (L = 300 inch), and an unknown thickness (t inch). The aluminum material allowable stress is (* = 51,000 lb/in2). When the tank is filled and pressurized to a value of (p = 100 lb/in2), the stresses in the aluminum wall include a circumferential stress (R), a longitudinal stress (L), and a radial stress (Z) that can be neglected (Z = 0). Calculate the minimum required thickness (t inch) using the Maximum Strain Energy of Distortion failure criteria along with a required margin of safety equal to (MS = +0.10)
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