Accession Number : AD0429387


Title :   DEVELOPMENT OF A 1200 F RADOME.


Descriptive Note : Interim engineering rept. no. 3, 1 Oct-31 Dec 63,


Corporate Author : BRUNSWICK CORP MARION VA


Personal Author(s) : Chase,V A ; Copeland,R L


Report Date : 31 Dec 1963


Pagination or Media Count : 51


Abstract : Work covered includes investigation of the effects of different fabric weaves on the strength properties of glass reinforced aluminum phosphate laminates at elevated temperatures. Thermal, mechanical and electrical properties of aluminum phosphate laminates were measured. Radar transmission and power reflection coefficients were measured on a laminate at 10.0 kmc for different angles of incidence. High temperature sealants for the radome surface were evaluated and the effect of thermal expansion differences between the matrix and reinforcement were studied. The most promising reinforcement found was Owens Corning S-994 glass woven into a 143 Style fabric. Average flexural strengths for five specimens at room temperature and 1100 F were measured to be 20,800 and 24,100 psi with this reinforcement. A discussion of problem areas involving loss of tensile strength at elevated temperatures and loss of flexural strengths after aging at elevated temperatures is presented. Theory as to causes for this strength loss and possible corrective action is discussed. (Author)


Descriptors :   *RADAR EQUIPMENT , *REINFORCING MATERIALS , MATERIALS , RADOMES , RADOMES , GLASS TEXTILES , MECHANICAL PROPERTIES , LAMINATES , ALUMINUM COMPOUNDS , PHOSPHATES , SEALING COMPOUNDS , HIGH TEMPERATURE , TENSILE PROPERTIES , DEFORMATION , AGING(MATERIALS) , REFLECTION , THERMAL EXPANSION , PHYSICAL PROPERTIES , COMPRESSIVE PROPERTIES , DIELECTRIC PROPERTIES , MOISTURE , SORPTION , COMPOSITE MATERIALS , BONDING


Distribution Statement : APPROVED FOR PUBLIC RELEASE