Method for making thermal insulation

Details Method for making thermal insulation Method for making thermal insulation

1988-04-15

1991-03-19

Weston, Caleb

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

156 622, 156 626, 156153, 156154, 156197, 156242, 156276, 156279, 156285, B29C 3902

Patent

active

050009982

ABSTRACT:
A method for making a thermal insulating structure for providing thermal insulation, structural load accommodation, and noise attenuation for surfaces in aerospace systems that are exposed to high temperatures is disclosed. Structure to be protected is a high-temperature solid back sheet to which is a honeycomb core having a perforated buried septum is bonded to a substrate. A layer of cast fiber-ceramic insulation is secured to the honeycomb core, filling portions of the core outward from the septum and extending beyond the outer face of the core. To absorb structural loads, a densified top coat overlies the insulating layer. To minimize the transmission of shear-inducing loads into the insulating layer, the outer face of the honeycomb core has an irregular surface. Core cell vents extending through the walls of adjacent cells provide a controlled airspace between the back sheet and the buried septum through which a fluid coolant may be circulated.

REFERENCES:
patent: 3064345 (1962-11-01), Herman et al.
patent: 3425885 (1969-02-01), Webb
patent: 3551266 (1970-12-01), Webb
patent: 3733229 (1973-05-01), Scheer et al.
patent: 3956050 (1976-05-01), Dow
patent: 3964527 (1976-06-01), Zwart
patent: 4257998 (1981-03-01), Diepenbrock et al.
patent: 4264955 (1981-05-01), Harp et al.

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