Accession Number : AD0922712

Title :   Advanced Composite Missile and Space Design Data.

Descriptive Note : Final technical rept. Jun 72-Jun 74,

Corporate Author : GENERAL DYNAMICS SAN DIEGO CA CONVAIR DIV

Personal Author(s) : Pynchon, George E.

Report Date : JUN 1974

Pagination or Media Count : 230

Abstract : Engineering data appropriate to the use of selected graphite/epoxy composite materials in dimensionally critical space applications is presented. The thermal strain characteristics of a large number of material/layup configurations over the temperature range -320F to 250F were investigated. Additional data from the investigation of two systems, HM-S/X-30 and GY-70/X-904, is also included. The out-gassing characteristics in a hard vacuum at temperatures up to 150F were measured including identification of outgassing on optical reflectors. Thermal conductivity data over the temperature range of -320F to 250F is presented as is the effect of moisture and the effect of thermal cycling of composite substrate lightweight mirrors over selected temperature intervals between -320F and 250F. The fabrication techniques, including the effects of layup, resin contact, and modular cure are discussed as they relate to dimensional stability. Finally, the design and fabrication of a lightweight 12-inch diameter fully figured spherical mirror is discussed and the results of a test of the figure are presented. (Author-PL)

Descriptors :   *COMPOSITE MATERIALS, *GRAPHITE, *EPOXY RESINS, *SUBSTRATES, *MIRRORS, SPACECRAFT COMPONENTS, GUIDED MISSILES, LAMINATES, MECHANICAL PROPERTIES, ENVIRONMENTAL TESTS, THERMAL CYCLING TESTS, THERMAL CONDUCTIVITY, OUTGASSING, MOISTURE, THERMAL EXPANSION, THERMAL STABILITY, TEST METHODS, INTERFEROMETERS, STRAIN(MECHANICS), SYNTHETIC FIBERS, QUARTZ, ALUMINUM, HONEYCOMB STRUCTURES, MANUFACTURING, SPHERES.

Subject Categories : Laminates and Composite Materials
      Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE