Accession Number : AD0290660

Title :   SCREENING FOR AERODYNAMIC HEAT RESISTANCE CHARACTERISTICS FOR MATERIAL - INSULATIVE - THERMAL - ORGANIC AND INORGANIC HOLLOW SPHERES - COMPRESSED GLASS FIBERS - PHENOLIC HONEYCOMB

Corporate Author : GENERAL DYNAMICS/POMONA CALIF

Personal Author(s) : STIER,H.H. ; KELLER,E.E. ; SUTHERLAND,W.M.

Report Date : 04 FEB 1958

Pagination or Media Count : 1

Abstract : About 100 combinations of materials representing orderly arrays of hollow organic and inorganic spheres (syntactic foams), compressed glass fibers, phenolic honeycombs and silicone foams were screened to determine their resistance to impingement by Mach 2.5 and 3 air flows. The screening examined insulating properties, thermal properties, resistance to air erosion, resistance to cracking due to tension field wrinkling, surface smoothness, weight, water absorption, fuel and oil resistance, tear propagation resistance, low temperature strength, and elasticity. The arrays of hollow spheres were found subject to thermal cracking, and the thick, easily compressible silicone foams were found subject to excessive flutter. The remaining materials, compressed glass fibers and phenolic honeycombs, gave promise for development for insulative protection of aluminum alloy construction in Mach 2.5 and 3 air flows. (Author)

Descriptors :   *GLASS TEXTILES, *PLASTICS, *THERMAL INSULATION, AERODYNAMIC HEATING, ALUMINUM ALLOYS, CERAMIC COATINGS, COATINGS, ELASTIC PROPERTIES, EROSION, FOAM, GLASS, HONEYCOMB CORES, MACH NUMBER, PHENOLIC PLASTICS, SHEAR STRESSES, SILICONES, SYNTHETIC RUBBER, TEMPERATURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE