Accession Number : AD0870024

Title :   MANUFACTURING TECHNOLOGY FOR POLYBENZIMIDAZOLE RESIN IN COMPOSITE STRUCTURES.

Descriptive Note : Final rept. Nov 63-Jul 69,

Corporate Author : WHITTAKER CORP SAN DIEGO CA RESEARCH AND DEVELOPMENT DIV

Personal Author(s) : CHASE, Vance A.

Report Date : MAY 1970

Pagination or Media Count : 165

Abstract : Successful fabrication process for large- size PBI fiber glass composite structures were established. PBI composite fabrication technology was advanced from the laboratory stage to the manufacturing of large structural components. An advanced tooling concept was implemented in the design and construction of a castable silica ceramic tool containing integral heaters. This tool allowed curing of PBI radome at the required 700 F temperature in an unheated autoclave. Successful bagging materials and bag designs were established for curing the radome at 700 F in the autoclave. Material and fabrication processes specifications were prepared which will allow fabrication of large-size structures from PBI. Electrical and structural designs were generated for a large-size PBI radome structure (10 feet high x 8 feet base width by 0.400 inches thick) with performance requirements typical of advanced aircraft that will operate above Mach 3. (Author, modified-PL)

Descriptors :   *COMPOSITE MATERIALS), *BENZIMIDAZOLES), (*SUPERSONIC AIRCRAFT, RADOMES), (*RADOMES, (*REINFORCED PLASTICS, GLASS TEXTILES, MANUFACTURING, HEAT RESISTANT PLASTICS, STRUCTURAL PROPERTIES, ELECTRICAL PROPERTIES.

Subject Categories : Laminates and Composite Materials
      Active & Passive Radar Detection & Equipment
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE