Accession Number : AD0874317

Title :   Hardened Composites, Refractories, and Transpiration Cooling II (RESEP II). Volume II, Part A. Task 10.3, Refractories Study.

Descriptive Note : Final rept. 18 Dec 68-17 Aug 70,

Corporate Author : MCDONNELL DOUGLAS ASTRONAUTICS CO-HB HUNTINGTON BEACH CA

Personal Author(s) : Clayton, F. I. ; Hutchinson, W. D. ; Spahr, R. J. ; Davis, W. F. ; Jortner, J.

Report Date : AUG 1970

Pagination or Media Count : 414

Abstract : This report summarizes technical accomplishments during the RESEP II, Task 10.3 (Task 4) Refractories Study. During the program, a heat treatment study was conducted resulting in the selection of 2900 C as the optimum heat treatment for Poco AXF grade graphite. This material was characterized by mechanical, physical ablation and plate slap properties. A plug nose tip design using this material was generated and evaluated both analytically and experimentally. Design criteria and evaluation covered all re-entry environments both benign and hostile. Biaxial testing was conducted at room and elevated temperatures to determine both failure envelopes and stress-strain relationships. A study of an experiment to thermostructurally fail graphite by a well understood and controlled technique was conducted. Three-dimensionally reinforced carbon-carbon composite material was processed and characterized. (Author)

Descriptors :   *HEAT SHIELDS), (*COMPOSITE MATERIALS, HARDENING), (*REENTRY VEHICLES, REFRACTORY MATERIALS, NOSE CONES, SYNTHETIC FIBERS, HEAT TREATMENT, GRAPHITE, ABLATION, ATMOSPHERE ENTRY, STRESSES, STRAIN(MECHANICS), FAILURE(MECHANICS), CARBON, TENSILE PROPERTIES, PROCESSING, STRUCTURAL PROPERTIES, THERMAL PROPERTIES, NONDESTRUCTIVE TESTING, ATMOSPHERE ENTRY, SWEAT COOLING, AERODYNAMIC HEATING.

Subject Categories : Ceramics, Refractories and Glass
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE