Method for fabricating a hollow component for a rocket engine
AssigneeGeneral Electric Company
InventorThomas E. Mantkowski
Life of this patent
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Abstract
A method for making an engine component with a hollow interior includes the steps of: selectively patterning a principal substrate surface; forming a slurry including a selected amount of a binder material, a selected amount of a solvent and a selected amount of a filter material; inserting the slurry into the substrate surface pattern; evaporating the solvent to solidify the slurry; depositing a close-out layer of material over the patterned substrate surface and over the solidifed slurry; and without removing the close-out layer, removing the solidified slurry to provide a structure with a hollow interior.
Claims21
A method for making a gas turbine engine component with a hollow interior, comprising the steps of:
- (a) providing a substrate;
- (b) selectively patterning a principal surface of the substrate;
- (c) forming a slurry comprising a selected amount of a binder material chosen from at least one of an acrylic and a thermoplastic material, a selected amount of a solvent and a selected amount of a filler material chosen from at least one of a salt, a powdered ceramic, sand and a powdered metal;
- (d) inserting the slurry into the substrate surface pattern;
- (e) evaporating the solvent to solidify the slurry;
- (f) depositing a close-out layer of material over the patterned substrate surface and over the solidified slurry;
- and
- (g) without removing the close-out layer, removing the solidified slurry to provide the engine component with a hollow interior.
A method for making a gas turbine engine component with a hollow interior, comprising the steps of:
- (a) providing a substrate;
- (b) selectively patterning a principal surface of the substrate;
- (c) depositing a first layer of material comprising a selected amount of binder material chosen from at least one of an acrylic and a thermoplastic material and a selected amount of a solvent into the substrate surface pattern;
- (d) evaporating the solvent to solidify the first layer;
- (e) depositing a second layer of material comprising at least a filler material chosen from at least one of a salt, a powdered ceramic, sand and a powdered metal into the substrate surface pattern on the first layer of material;
- (f) depositing a close-out layer of material over the patterned substrate surface and over the second layer of material;
- (g) without removing the close-out layer, removing the first layer of material;
- and
- (h) without removing the close-out layer, removing the second layer of material.
A method for making a combustion chamber for an engine, comprising the steps of:
- (a) forming an inner wall of the combustion chamber from a high heat resistant material;
- (b) forming a multiplicity of grooves in the combustion chamber inner wall;
- (c) forming a slurry comprising a selected amount of a binder material chosen from at least one of an acrylic and a thermoplastic material, a selected amount of a solvent and a selected amount of a filler material chosen from at least one of a salt, a powdered ceramic, sand and a powdered metal;
- (d) inserting the slurry into each of the multiplicity of grooves;
- (e) evaporating the solvent to solidify the slurry;
- (f) depositing a close-out layer of high heat resistant material over the inner wall and over the solidified slurry to enclose the grooves;
- and
- (g) without removing the close-out layer, removing the solidified slurry in each of the enclosed grooves to provide a multiplicity of cooling channels.
Dependencies are inferred from the claim text.