Heat resistant wall construction

Claim 2

A wall structure forming a heat resistive surface, comprising a plurality of bundles of quills, each quill being characterized by uni-directional properties along its length, each of said plurality of bundles including a large number of straight quills immersed in a matrix material to form a three-dimensional solid structure with said quills parallel to each other in a plane cutting across more than one bundle, said bundles being attached to one another with an acute angle in said plane between their respective parallel quills to form said wall and said heat resistive surface, wherein said bundles are oriented with respect to said heat resistive surface wth at least one quill of each bundle being perpendicular thereto in said plane, whereby the quill density and resulting heat conductive and ablative properties remain uniform at various distances away from the heat resistive surface.

Claim 3

A wall structure according to claim 1 wherein the quills of each bundle are held together by said matriX with substantially no cross fibers or filaments holding the quills together.

Claim 4

A wall structure according to claim 1 wherein at least some of the quills of each bundle are hollow fibers, whereby material may be placed therein that has a different composition than said fibers for heat transfer along the length of said fibers.

Claim 5

A wall structure according to claim 1 which additionally includes a coating attached to the ends of said quills along said heat resistant surface.

Claim 6

A heat resistant wall structure forming an aperture of substantially a circular cross-section, comprising a plurality of bundles of quills joined together along substantially an extension of a radial line of said aperture, each quill being characterized by uni-directional properties along its length, each of said bundles including a large number of straight quills immersed in a matrix material which hold said quills parallel to each other in two orthogonal planes and oriented with respect to the circular aperture a defined plane passing through said aperture substanitally perpendicular to an axis, whereby the quill density and resulting heat conductive and ablative properties remain uniform at various distances away from the heat resistive surface.

Claim 7

A heat resistant wall structure forming an aperture of substantially a circular cross-section, comprising a plurality of bundles of quills joined together along substantially an extension of a radial line of said aperture, each quill being characterized by uni-directional properties along its length, each of said bundles including a large number of straight quills immersed in a matrix material which hold said quills parallel to each other in two orthogonal planes and oriented with respect to the circular aperture a defined plane passing through said aperture substanitally perpendicular to an axis, whereby the quill density and resulting heat conductive and ablative properties remain uniform at various distances away from the heat resistive surface.

Claim 8

A wall structure according to claim 5 wherein the quills of each bundle are held together by said matrix with substantially no cross fibers of filaments holding the quills together.

Claim 9

A wall structure according to claim 5 wherein at least some of the quills of each bundle are hollow fibers, whereby material may be placed therein that has a different composition that said fibers for heat transfer along the length of said quills.

Claim 10

A wall structure according to claim 5 which additionally includes a coating attached to ends of said quills along the wall of said aperture.

Claim 11

A wall structure forming an aperture with a heat resistive internal surface, said wall structure comprising a plurality of bundles of fibers, each of said bundles including a large number of straight fibers immersed in a matrix material which holds the fibers parallel to each other in two orthogonal planes said bundles being oriented with respect to said aperture so that at least one fiber within each bundle is substantially perpendicular to said heat resistive surface in a projection on a given plane cutting across said aperture and more than one bundle from each of the plurality of bundles, said fibers characterized by significantly differing thermal or mechanical properties in directions along their lengths and across their widths, whereby the fiber density and resulting heat conductive and ablative properties remain uniform at various distances away from the heat resistive surface and whereby the thermal and mechanical properties may be maximized for the specific materials employed.

Claim 12

A wall structure forming an aperture with a heat resistive internal surface, said wall structure comprising a plurality of bundles of fibers, each of said bundles including a large number of straight fibers immersed in a matrix material which holds the fibers parallel to each other in two orthogonal planes said bundles being oriented with respect to said aperture so that at least one fiber within each bundle is substantially perpendicular to said heat resistive surface in a projection on a given plane cutting across said aperture and more than one bundle from each of the plurality of bundles, said fibers characterized by significantly differing thermal or mechanical properties in directions along their lengths and across their widths, whereby the fiber density and resulting heat conductive and ablative properties remain uniform at various distances away from the heat resistive surface and whereby the thermal and mechanical properties may be maximized for the specific materials employed.

Claim 13

The wall structure according to claim 9, wherein the fibers of each bundle are held together by said matrix with substantially no cross members holding the fibers together.