US 12,140,109 B2
Transpiration-cooled systems having permeable and non-permeable portions
Weidong Song, Woodinville, WA (US); Kutter Kupke, Renton, WA (US); and Alexander Twaites, Seattle, WA (US)
Assigned to Blue Origin, LLC, Kent, WA (US)
Filed by Blue Origin, LLC, Kent, WA (US)
Filed on Mar. 30, 2023, as Appl. No. 18/193,005.
Prior Publication US 2024/0328373 A1, Oct. 3, 2024
Int. Cl. F02K 9/97 (2006.01); B64G 1/58 (2006.01); B64G 1/62 (2006.01); F02K 9/64 (2006.01)
CPC F02K 9/972 (2013.01) [B64G 1/58 (2013.01); B64G 1/62 (2013.01); F02K 9/64 (2013.01); F02K 9/97 (2013.01); F05D 2230/31 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A nozzle for a rocket engine comprising:
a non-permeable outer layer forming a predetermined shape of the nozzle, the non-permeable outer layer defining an interior space;
a plurality of walls, each wall comprising a first side and a second side extending generally orthogonal to the non-permeable outer layer and into the interior space;
a plurality of permeable layers, a permeable layer of the plurality of permeable layers disposed between the first side of a first wall of the plurality of walls and the second side of a second, adjacent wall of the plurality of walls, the permeable layer comprising an outermost surface spaced a distance from the non-permeable outer layer and an innermost surface opposite the outermost surface, wherein the first side and the second side of each of the plurality of walls terminate at an innermost surface, and wherein the innermost surface of the first wall, the innermost surface of the permeable layer, and the innermost surface of the second wall define a continuous portion of an inner circumference of the nozzle; and
a plurality of cooling channels extending between an intake end and an exhaust end of the nozzle, a cooling channel of the plurality of cooling channels defined by the outermost surface of the permeable layer, the non-permeable outer layer, the first side of the first wall, and the second side of the second, adjacent wall, the cooling channel configured to transport a fluid.