Analytical Studies of Hollow Spheres for Lower Density Higher Strength Buoyancy Materials
NAVAL APPLIED SCIENCE LAB BROOKLYN NY BROOKLYN United States
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An investigation was made to develop a low density, high strength buoyancy system of materials with a target density of 0.3 to 0.4 cu gmcu cm 19-25 lbcu ft which will be able to withstand 13,500 psi hydrostatic pressure. For a hollow sphere of a particular material at 13,500 psi external pressure the optimum sphere density is a constant for any desired outer diameter. The following candidate materials are potentially suitable and are listed in order of ascending optimum sphere densities at 13,500 psi external pressure beryllia 7.8 lbcu ft, silicon carbide 8.1 lbcu ft, alumina 10.8 lbcu ft, glass 14.8 lbcu ft, aluminum 16.2 lbcu ft, titanium 21.5 lbcu ft, steel 27.8 lbcu ft.
- Ceramics, Refractories and Glass
- Submarine Engineering