Accession Number : ADD011904

Title :   Circumferentially Wrapped Carbon-Carbon Structure.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Wallace,G A ; Zimmer,J E

Report Date : 11 Jun 1985

Pagination or Media Count : 5

Abstract : In accordance with the present invention there is provided an improved carbon-carbon composite structure which consists essentially of a central core, a plurality of layers of circumferentially wrapped woven cotton fabric; and a carbon binder, wherein the central core consists essentially of a plurality of longitudinally oriented carbon fibers. There is also provided a method for fabricating an improved carbon-carbon nosetip preform for a reentry vehicle which consists essentially of providing at least one rigidized carbon rod to build up a desired thickness of fabric, impregnating the built-up structure with a suitable binder, carbonizing the binder and graphitizing the composite structure. There is further provided an apparatus for fabricating a nosetip preform which comprises a two-drum surface winder, one drum of which has a surface cover adapted to grip and propel a carbon fabric.

Descriptors :   *PATENTS, *CARBON CARBON COMPOSITES, *CARBON FIBERS, *NOSE TIPS, *REENTRY VEHICLES, STRUCTURAL PROPERTIES, COMPOSITE STRUCTURES, THERMODYNAMICS, HEAT SHIELDS, FILAMENT WOUND CONSTRUCTION, FIBER REINFORCED COMPOSITES, FABRICS, YARNS, STRUCTURAL RESPONSE, BINDERS, FABRICATION

Subject Categories : Laminates and Composite Materials
      Unmanned Spacecraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE