. Development of a spherical acrylic plastic pressure hull for hydrospace application. Hulls (Naval architecture); Submersibles. Figure 66. Large-scale capsule of 66-inch diameter for the NEMO system. The pressure levels chosen for the long-term testing program were 1,300 psi, 1,200 psi, 1,100 psi, 1,000 psi, 900 psi, 750 psi, 500 psi, and 250 psi.* The large spread between the highest and lowest pressures selected for this testing program was based on the rationale that while the high-pressure loadings will cause the models to fail rapidly and thus permit generation of many data points within
. Development of a spherical acrylic plastic pressure hull for hydrospace application. Hulls (Naval architecture); Submersibles. Figure 66. Large-scale capsule of 66-inch diameter for the NEMO system. The pressure levels chosen for the long-term testing program were 1,300 psi, 1,200 psi, 1,100 psi, 1,000 psi, 900 psi, 750 psi, 500 psi, and 250 psi.* The large spread between the highest and lowest pressures selected for this testing program was based on the rationale that while the high-pressure loadings will cause the models to fail rapidly and thus permit generation of many data points within a short period of time, the low- pressure loadings will show that if the pressure is sufficiently low, implosion under long-term loading will not occur within any reasonable dive duration at operational depth. Using the data from both the high- and low-pressure tests, it will be possible to predict by interpolation the duration of loading preceding implosion for any sustained pressure level. * Some tests were performed also at pressures of 4,500 psi, 4,000 psi, 3,500 psi, and 3,000 psi, but the model capsules used for those tests were 15-inch-OD x 13-inch-ID (Appendix E).. 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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