Accession Number : AD0782337

Title :   Development of a Precision Casting Process for Acrylic Plastic Spherical Shell Windows Applicable to High-Pressure Service.

Descriptive Note : Research and development Jun 72-Dec 73,

Corporate Author : NAVAL UNDERSEA CENTER SAN DIEGO CALIF

Personal Author(s) : Stachiw,Jerry D.

Report Date : MAY 1974

Pagination or Media Count : 59

Abstract : A casting technique was developed that allows casting of acrylic plastic spherical shell sector windows to curvature and thick- ness tolerances generally found only in machined windows. By means of this technique, 18-inch OD X 10-inch ID windows were made; after a minor polishing operation they met the ASTM-D-702 specification for optical clarity. The mechanical and physical properties of the castings were in the same range as those of commercially available cast plates and sheets. (Author, modified-PL)

Descriptors :   *Underwater vehicles, *Windows, *Acrylic resins, Spheres, Shells(Structural forms), Casting, Molds(Forms), Pressure hulls, Pressurization

Subject Categories : Plastics
      Marine Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE