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Fig. 9 from the 2013 GENOPT paper2. (continued) Three more vibration modes from GENOPT/BIGBOSOR4 for the optimized propellant tank with two skirts attached to the tank at the aft and forward cylinder-dome junctions. These are all primarily shell deformation modes. (E) Shell deformation with n = 2 circumferential waves (ovalization of the propellant tank; (F) Shell deformation with n = 3 circumferential waves; (G) Shell deformation with n = 4 circumferential waves. Compare the GENOPT/BIGBOSOR4 predictions in this slide with predictions from STAGS shown in Figs. 10b.
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