US 6,182,442 B2 · Combustion chamber wall construction for high power engines and thrust nozzles

Abstract

A wall construction for a combustion chamber or thrust nozzle of a high power engine of a flying body includes an inner wall body that is subjected to the hot gases within the combustion chamber, and an outer jacket that surrounds the inner wall body and carries the mechanical loads. The inner wall body has a plurality of cooling channels through which a cooling medium may flow. The outer jacket is made of a long-fiber C/SiC composite material, while the inner wall member is made of a short fiber C/SiC composite material. The reduced thermal expansion coefficient of this ceramic composite material in comparison to metal alloys leads to a reduced straining and reduced deformation of the wall construction and therewith an increased operating life.

Claims19

Dependent claims

A wall construction for at least one of a combustion chamber and a thrust nozzle of a high power engine, comprising:

an inner wall member that has a first side adapted to face toward an interior hot gas space of said at least one of a combustion chamber and a thrust nozzle, and a second side facing opposite said first side;
and
an outer jacket having a third side arranged on and connected to said second side of said inner wall member;
wherein said inner wall member has a plurality of cooling channels extending therein, and comprises a short fiber C/Sic composite material containing relatively shorter fibers;
and
wherein said outer jacket comprises a long fiber C/SiC composite material containing relatively longer fibers as compared to said relatively shorter fibers of said short fiber C/SiC composite material.

3 more elements

Dependencies are inferred from the claim text.

Combustion chamber wall construction for high power engines and thrust nozzles

Life of this patent

Combustion chamber wall construction for high power engines and thrust nozzles

Life of this patent

Abstract

Claims19