LIST OF FIGURES 



Page 



Figure 1 - Inboard Profile of Proposed Oceanographic Vehicle .... 3 



Figure 2 - Sandwich Cross Sections Showing Prototype 



Dimensions of Models Tested 4 



Figure 3 - Details of Model OV-1 6 



Figure 4 - Details of Models OV-3 and OV-4 8 



Figure 5 - Model OV-4 Prior to Assembly 9 



Figure 6 - Assembly Drawing of Model OV-3 9 



Figure 7 - Theoretical Stress Intensity in Critical Shell Regions 



for the Three Designs Investigated 11 



Figure 8 - Details of Model OV-2 12 



Figure 9 - Details of Model OV-5 .' 14 



Figure 10 - Theoretical and Measured Strain Sensitivities 



for Model OV-1 15 



Figure 11 - Theoretical and Measured Strain Sensitivities 



for Model OV-2 16 



Figure 12 - View of Axisymmetric Crease in Outer Shell 



of Model OV-1 18 



Figure 13 - View of Overall Failure of Model OV-2 18 



Figure 14 - Strain Plots of Gages Located at Station 1 0|^ 



on Model OV-1 19 



Figure 15 - Strain Plots of Gages Located at Station 11-| 



on Model OV-1 ' 20 



Figure 16 - Model OV-3 after Collapse 22 



Figure 17 - Model OV-4 after Collapse 23 



