N., “Hydraulic Ram Effect on Composite Fuel Entry Walls”, Master’s Thesis, NPS, 1976.Įzzard, H. W., “Fuel Cell Pressure Loading During Hydraulic Ram”, Master’s Thesis, NPS, 1975.ĭuva, A. Page, B., “Entry Wall Strain Measurements During Hydraulic Ram”, Master’s Thesis, NPS,1975. L., “FY 75 Experimental Hydraulic Ram Studies”, NPS-57Ph75061, 1975. E., “Aircraft Fuel Tank Vulnerability to Hydraulic Ram: Modification Of The Northrop Finite Element Computer Code Br-1 To Include Fluid- Structure Interaction-Theory and User's Manual for Br-1hr”, NPS-57Bp74071, 1974. E., “Prediction of the Response of the Exit Wall of the NWC 50 Cubic Feet Tank to Hydraulic Ram”, NPS Report, NPS-57BP74031, 1974.īall, R. Even though the results and discussion are for the specific geometric and material data used in this study, the present findings are expected to provide valuable insights to the qualitative characteristics of the HRAM event.įuhs, A. Then, an attempt was made to predict the combined effects of multi-variables. The effect of each individual parameter was studied, and the effects of different parameters were compared. The parameters considered were the water filling level in the box, its wall thickness, projectile impact velocity, projectile mass, impact angle, and projectile shape. Then, each parameter was varied individually to determine its effect during the HRAM event. A standard model was developed and validated against the available experimental data. The model considered a projectile penetrating a box which contains water either partially or fully. A numerical parametric study was conducted to better understand the Hydrodynamic Ram (HRAM) event.
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