Archive image from page 96 of Development of a spherical acrylic. Development of a spherical acrylic plastic pressure hull for hydrospace application . developmentofsph00stac Year: 1970 Figure 61. Bottom polar penetration closure and retaining ring for the 15-inch- diameter model capsule: exterior view. Figure 62. Bottom polar penetration closure and retaining ring for the 15-inch- diameter model capsule: interior view. 93

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Photo credit: © Actep Burstov / Alamy / Afripics
License: Licensed
Model Released: No

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