IP Library › Granted Patent US 12,209,559
Granted Patent B2
US 12,209,559 · App. 18/390,927 · Granted Jan 28, 2025

Transpiration-cooled systems having permeable and non-permeable portions

Inventors: Weidong Song (Woodinville, WA); Kutter Kupke (Renton, WA); Alexander Twaites (Seattle, WA)
Assignee: Blue Origin, LLC
F02K9/972B64G1/58B64G1/62F02K9/64F02K9/97F05D2230/31
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Quick Facts
Patent No.
US 12,209,559
App. No.
18/390,927
Granted
Jan 28, 2025
Kind
B2
Abstract

Transpiration-cooled systems having permeable and non-permeable portions are provided. In one aspect, a nozzle for a rocket engine includes a non-permeable outer layer, a plurality of walls, a permeable layer, and a plurality of cooling channels. The non-permeable outer layer forms a predetermined shape of the nozzle and defines an interior space. The plurality of walls extend generally orthogonal to the non-permeable outer layer and into the interior space. The permeable layer is disposed between each set of adjacent walls of the plurality of walls. The permeable layer is spaced a distance from the non-permeable outer layer. The plurality of cooling channels are formed between the permeable layer, the non-permeable outer layer, and a set of adjacent walls of the plurality of walls. The plurality of cooling channels are configured to transport a fluid.

Claims (19)

1. A method of forming a structure comprising:

melting powder in a powder bed to form a set of non-permeable layers, the set of non-permeable layers forming a base having a plurality of walls extending orthogonal to the base, the base forming an outer structural wall of a rocket nozzle; and

melting powder in the powder bed to form a set of permeable layers forming at least a portion of an inner layer of the rocket nozzle, the set of permeable layers alternating with the plurality of walls in a circumferential direction along the inner layer of the rocket nozzle, the set of permeable layers spaced a distance from the base such that channels are defined by the base and the set of permeable layers.

2. The method of claim 1 , wherein the channels are configured to transport a fluid and wherein the set of permeable layers are configured to receive at least a portion of the fluid transported through the channels.

3. The method of claim 1 , wherein laser powder bed fusion is used to form the structure.

4. The method of claim 1 , further comprising forming the set of permeable layers such that a density of the set of permeable layers increases from a portion of the set of permeable layers enclosing each channel to a portion of the set of permeable layers forming the inner layer of the rocket nozzle.

5. The method of claim 1 , further comprising forming the set of permeable layers such that a first portion is permeable to a fluid at a first rate and a second portion is permeable to the fluid at a second rate different than the first rate.

6. The method of claim 1 , wherein the base and the plurality of walls are integral.

7. The method of claim 1 , wherein the set of non-permeable layers and the set of permeable layers are formed using a single material.

8. The method of claim 1 , further comprising forming a layer of the set of permeable layers on top of the plurality of walls to form a single continuous permeable layer.

9. The method of claim 1 , wherein a fluid flow rate through the set of permeable layers of a first area of the structure is different than a fluid flow rate through the set of permeable layers of a second area of the structure.

10. The method of claim 1 , wherein forming the set of permeable layers comprises forming a set of curved permeable layers.

11. The method of claim 1 , wherein the channels extend between an intake end and an exhaust end of the rocket nozzle.

12. The method of claim 1 , wherein an innermost surface of a permeable layer, an innermost surface of a first wall, and an innermost surface of a second, adjacent wall of the plurality of walls define a continuous portion of the inner layer of the rocket nozzle.

13. The method of claim 1 , wherein an innermost surface of each of the set permeable layers and the innermost surface of each of the plurality of walls define a circumference of the inner layer of the rocket nozzle.

14. The method of claim 1 , wherein a first wall and a second, adjacent wall of the plurality walls each comprise a first side and a second side extending generally orthogonal to the base, and wherein a permeable layer of the set of permeable layers is in contact with the first side of the first wall and the second side of the second, adjacent wall.

15. The method of claim 1 , wherein forming the set of permeable layers comprises forming a set of permeable layers having a non-linear profile.

16. The method of claim 1 , wherein the set of permeable layers alternate with the plurality of walls in the circumferential direction along a portion of a perimeter of the inner layer of the rocket nozzle.

17. The method of claim 1 , wherein the set of permeable layers alternate with the plurality of walls in the circumferential direction along an entire perimeter of the inner layer of the rocket nozzle.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 20, 2025
From: BLUE ORIGIN, LLC
To: BLUE ORIGIN MANUFACTURING, LLC
Reel/Frame 070585/0358 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 25, 2024
From: SONG, WEIDONG; KUPKE, KUTTER; TWAITES, ALEXANDER
To: BLUE ORIGIN, LLC
Reel/Frame 068697/0005 →
Continuity (2)
Division 18193005 · Mar 30, 2023
Related Publication 20240328374A1 · Oct 3, 2024
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