Combustion chamber wall construction for high power engines and thrust nozzles

US6182442A · kind A · utility

Assignee

• Daimlerchrysler AG · US

Inventors

• Guenther Schmidt · Tauberbischofsheim, DE
• Steffen Beyer · Munich, DE

Key dates

• Filing date: Feb 4, 1999
• Grant date: Feb 6, 2001
• Expiry date: Feb 4, 2019

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02K9/64
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

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.