초록 ▼

A rocket engine is prepared by fabricating a combustion chamber having an annular wall as a single piece of material. The wall has a first axial region with a first inner diameter, a second axial region with a second inner diameter greater than the first inner diameter, and an inner wall step transi

A rocket engine is prepared by fabricating a combustion chamber having an annular wall as a single piece of material. The wall has a first axial region with a first inner diameter, a second axial region with a second inner diameter greater than the first inner diameter, and an inner wall step transition between the first axial region and the second axial region. The wall is formed by furnishing an oversize blank of the wall material and electrical discharge machining or grinding it to the final size. The combustion chamber is attached to an injector by bonding an annular metallic deposit to the first axial region of the combustion chamber, providing an annular adaptor ring, first welding the adaptor ring to the metallic deposit, and second welding the adaptor ring to the injector.

대표청구항 ▼

[ What is claimed is:] [1.] A method of fabricating a rocket engine, comprising the steps offabricating a combustion chamber comprising an annular wall with a chamber wall inner surface and a chamber wall outer surface, the annular wall includinga first axial region having a first inner diameter of

[ What is claimed is:] [1.] A method of fabricating a rocket engine, comprising the steps offabricating a combustion chamber comprising an annular wall with a chamber wall inner surface and a chamber wall outer surface, the annular wall includinga first axial region having a first inner diameter of the chamber wall inner surface,a second axial region having a second inner diameter of the chamber wall inner surface, wherein the second inner diameter is greater than the first inner diameter, andan inner wall step transition between the first axial region and the second axial region, the step of fabricating including the steps ofproviding a combustion chamber wall blank that is oversize relative to the final combustion chamber wall, andremoving material from the combustion chamber wall blank to reach the final annular wall by a removal method which does not substantially deform and cold work any material which is not removed from the wall blank;providing an injector; andattaching the combustion chamber and the injector, the step of attaching including the steps ofbonding an annular metallic deposit to the first axial region of the combustion chamber,providing an annular adaptor ring,first welding the adaptor ring to the metallic deposit, andsecond welding the adaptor ring to the injector.