Dual layer sandwich for thermal management

Patent metadata

Field	Value
Publication number	US-9475593-B2
Application number	US-201414462175-A
Country	US
Kind code	B2
Filing date	Aug 18, 2014
Priority date	Aug 18, 2014
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A thermal protection system including a plurality of layers. A first layer includes a passive insulation material. A second layer includes a phase change insulation material. A third layer is positioned between the first layer and the second layer to separate the passive insulation material from the phase change insulation material.

First claim

The invention claimed is:

1. A thermal protection system, comprising:
a first layer comprising a first ceramic matrix composite material;
a second layer coupled to the first layer, the second layer comprising a passive insulation material;
a third layer coupled to the second layer such that the second layer is positioned between the first and third layers, the third layer comprising a second ceramic matrix composite material;
a fourth layer coupled to the third layer such that the third layer is positioned between the second and fourth layers, the fourth layer comprising a phase change insulation material; and
a fifth layer coupled to the fourth layer such that the fourth layer is positioned between the third and fifth layers, the fifth layer comprising a third ceramic matrix composite material, a carbon reinforced plastic material, a carbon fiber reinforced plastic material, a polymer matrix composite material, or a combination thereof.

2. The thermal protection system of claim 1 , further comprising a structural system that extends through the second layer, the third layer, the fourth layer, or a combination thereof.

3. The thermal protection system of claim 2 , wherein the structural system comprises one or more truss pins, flutes, baffles, honeycombs, or a combination thereof.

4. The thermal protection system of claim 3 , wherein the structural system comprises one or more truss pins that extend through the second layer, the third layer, and the fourth layer, and wherein the one or more truss pins each have a first end embedded in the first layer and a second end embedded in the fifth layer.

5. The thermal protection system of claim 1 , wherein the phase change insulation material changes from a solid phase to a liquid phase at a temperature from about 100° C. to about 1400° C.

6. The thermal protection system of claim 1 , wherein the passive insulation material comprises a tile, a batting, a foam, or a combination thereof.

7. The thermal protection system of claim 1 , wherein the passive insulation material comprises alumina, silica, or a combination thereof.

8. The thermal protection system of claim 1 , wherein the fourth layer further comprises a carrier having the phase change insulation material positioned therein.

9. The thermal protection system of claim 8 , wherein the carrier comprises silicon carbide, carbon, alumina, silica, or a combination thereof.

10. The thermal protection system of claim 8 , wherein the phase change insulation material comprises melamine, lithium fluoride, germanium nitride, germanium oxide, gallium nitride, or a combination thereof.

11. The thermal protection system of claim 1 , wherein a thickness of the third layer is less than or equal to 25% of a thickness of the second layer and less than or equal to 25% of a thickness of the fourth layer.

12. A vehicle, comprising:
a body; and
a thermal protection system integrated with the body, the thermal protection system comprising:
a first layer comprising a first ceramic matrix composite material;
a second layer coupled to the first layer, the second layer comprising a passive insulation material;
a third layer coupled to the second layer such that the second layer is positioned between the first and third layers, the third layer comprising a second ceramic matrix composite material;
a fourth layer coupled to the third layer such that the third layer is positioned between the second and fourth layers, the fourth layer comprising a phase change insulation material; and
a fifth layer coupled to the fourth layer such that the fourth layer is positioned between the third layer and the fifth layer, the fifth layer comprising a third ceramic matrix composite material, a carbon reinforced plastic material, or a combination thereof.

13. The vehicle of claim 12 , wherein the vehicle comprises an airplane, a missile, a rocket, or a spacecraft.

14. The vehicle of claim 13 , wherein:
the first ceramic matrix composite material comprises alumina, aluminosilicate, aluminoborosilicate, alumina mullite, mullite, quartz, glass, carbon, silicon carbide, silicon nitride, silicon boride, silicon boronitride, or a combination thereof,
the passive insulation material comprises alumina, silica, or a combination thereof,
the second ceramic matrix composite material comprises alumina, aluminosilicate, aluminoborosilicate, alumina mullite, mullite, quartz, glass, carbon, silicon carbide, silicon nitride, silicon boride, silicon boronitride, hafnium carbide, zirconium carbide, or a combination thereof,
the phase change insulation material comprises melamine, lithium fluoride, germanium nitride, germanium oxide, gallium nitride, or a combination thereof,
the third ceramic matrix composite material comprises alumina, aluminosilicate, aluminoborosilicate, alumina mullite, mullite, quartz, glass, carbon, silicon carbide, silicon nitride, silicon boride, silicon boronitride, or a combination thereof, and
the carbon reinforced plastic material comprises carbon, graphite, glass, aramid, bismaleimide, epoxy, polyimide, polyetheretherketone, cyanate ester, or a combination thereof.

15. The vehicle of claim 14 , wherein:
the fourth layer comprises a structural system extending between the third and fifth layers, and wherein the structural system comprises one or more truss pins, flutes, baffles, honeycombs, or a combination thereof,
the fourth layer further comprises a ceramic foam carrier having the phase change insulation material positioned therein, and
the ceramic foam carrier comprises silicon carbide, carbon, alumina, silica, or a combination thereof.

16. The vehicle of claim 12 , wherein the thermal protection system is integrated with the body such that the first layer comprises at least a portion of an outer surface of the body, and the fifth layer defines a portion of an inner surface of the body.

Assignees

• Boeing Co

Inventors

• Pinney Thomas R
• Embler Jonathan D
• Ledesma Jr James P
• Lehman Leanne L
• Heng Sangvavann

Classifications

• F16L59/029

  layered · CPC title

• B64G1/58 Primary

  Thermal protection, e.g. heat shields · CPC title

• B64C1/40

  Sound or heat insulation {, e.g. using insulation blankets} · CPC title

• B64G1/14

  Space shuttles {(reusable launch rockets B64G1/006)} · CPC title