Accession Number : ADD014718

Title :   Support for Thermally Expanding Conical Heatshield.

Descriptive Note : Patent, Filed 20 Jan 87, patented 27 Oct 87,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Kelley, Anthony D ; Finley, James W ; Eachus, Vernon F ; Lim, Richard A ; Yano, Miles K

Report Date : 27 Oct 1987

Pagination or Media Count : 6

Abstract : The front end of a conical forward carbon-carbon heatshield is attached to carbon-carbon nose tip by a threaded connection. The nose tip provides rigid structural support for the small end of the heatshield at all conditions of thermal expansion. The joint between the aft end of the forward heatshield and the forward end of an aft carbon-phenolic heatshield includes a tolerance gap which is tapered to accommodate the vector movement of the carbon-carbon heatshield due to axial and circumferential thermal expansion. The gap is filled with a high temperature insulating washer of frangible material which is crushed by the axial expansion of the forward heatshield and evacuated by the slip-stream. The forward heatshield is supported at the joint by a segmented ring of high density carbon wedges that will expand during flight and move with the heatshield along an expansion ramp to provide continuous support. (ttl)

Descriptors :   *CARBON CARBON COMPOSITES, *HEAT SHIELDS, *NOSE TIPS, CARBON, CARBON PHENOLIC MATERIALS, CONICAL BODIES, EXPANSION, FORWARD AREAS, FRANGIBLE, HIGH DENSITY, INSULATION, MATERIALS, RAMPS, RIGIDITY, RINGS, SEGMENTED, STRUCTURAL COMPONENTS, SUPPORTS, THERMAL EXPANSION, VECTOR ANALYSIS, WASHERS(SPACERS), WEDGES

Subject Categories : Protective Equipment
      Guided Missile Reentry Vehicles

Distribution Statement : APPROVED FOR PUBLIC RELEASE