Accession Number:

ADA279768

Title:

Acrylic Plastic Spherical Pressure Hull for Continental Shelf Depths

Descriptive Note:

Final technical rept.

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

Report Date:

1993-03-01

Pagination or Media Count:

102.0

Abstract:

A spherical acrylic pressure hull of NEMO design has been designed for an operational depth of 8,000 feet. The design meets the requirements of the American Society of Mechanical Engineers ASME Safety Standard for Pressure Vessels for Human Occupancy. The performance of the spherical acrylic hull has been experimentally evaluated by pressure testing 13 scale-model acrylic spheres under short-term, long-term, and cyclic conditions. The test results have shown that the NEMO-type acrylic spherical hull with tDi 0.2 thickness withstands 1,000 pressure cycles of 4 hours duration to design depths of 8,000 feet at ambient temperatures less than or equal 75 deg F. The acrylic hull withstood without catastrophic failure a 150-percent overpressurization 20,000 feet depth of 150 hours duration. Acrylic plastic, External pressure housing, Ocean engineering.

Subject Categories:

  • Properties of Metals and Alloys
  • Plastics
  • Submarine Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE