. Development of a spherical acrylic plastic pressure hull for hydrospace application. Hulls (Naval architecture); Submersibles. 120° [| 120° rosette leg alignment (typical) hoop direction internal framework of the cage node numbers Note: Node locations have been determined by dividing the sphere into 2-degree increments. Numbering of nodes began on the bottom, just as the numbering of the rosettes, and continued to the top. Figure 101. Location of strain gages on the 66-inch-diameter capsule for external pressure hydrostatic testing program. Short-term strains and stresses in the large-scale
. Development of a spherical acrylic plastic pressure hull for hydrospace application. Hulls (Naval architecture); Submersibles. 120° [| 120° rosette leg alignment (typical) hoop direction internal framework of the cage node numbers Note: Node locations have been determined by dividing the sphere into 2-degree increments. Numbering of nodes began on the bottom, just as the numbering of the rosettes, and continued to the top. Figure 101. Location of strain gages on the 66-inch-diameter capsule for external pressure hydrostatic testing program. Short-term strains and stresses in the large-scale capsule prototype were recorded at 27 locations (Figure 101) during all the pressurization in the 0-to-800-psi pressure range. Strains were also recorded at two locations during the differential temperature tests. The findings, based on strain gage recordings during the short-term pressurization from 0-to-500-psi pressure are: 1. The short-term strains in the acrylic plastic hull varied linearly with pressure (Figure 104). The maximum principal strains on the interior surface in the equatorial regions were approximately 20% higher than on the exterior surface of the hull. The magnitude of the principal strains on the interior surface of the equator at 500-psi short-term pressure and 68°F 136. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stachiw, Jerry D. , 1931-; Naval Civil Engineering Laboratory (Port Hueneme, Calif. ). Port Hueneme, Calif. : U. S. Naval Civil Engineering Laboratory
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