Development of ceramic turbine wheel for aircraft gas turbine engine

摘要

Requirements for increased power output and improved fuel economy demand higher turbine inlet temperature for gas turbine engines. The application of ceramic components in turbine material enables higher turbine operating temperature with no cooling techniques. However, the ceramic materials have several unfavorable properties, such as the brittleness, the low reliability of the ceramic parts. In this study, the ceramic turbine wheel which had a tip diameter greater than 200 mm was developed for the aircraft gas turbine engine. The design of ceramic turbine components is influenced by the characteristic material properties of ceramic. The rotational rig test was carried out and the engine test was demonstrated under full load operating conditions. The successful testing of the ceramic turbine components in the aircraft gas turbine engine has been accomplished. The test results indicate that the ceramic turbine is capable of operating under the actual use condition of the aircraft ceramic turbine engine.