Application of Ceramic Nozzles to 10 kW Engine

摘要

Work on application of ceramics to the nozzle section of the small radial MERADCOM 10KW gas turbine engine for meeting the two separate goals of improved erosion resistance and increased turbine inlet temperature is reported. Engine demonstrations of each of the two ceramic nozzle designs were completed. Efforts leading to engine demonstrations are documented and included; ceramic materials properties studies; design studies; engine simulator experiments for high temperature erosion, corrosion and thermal shock; and development of specialized relaxing glass adhesives for joining of ceramics. It was demonstrated that ceramics can offer from 10 to 100 times the erosion resistance at 1700 F to superalloys and have excellent corrosion and thermal shock properties. (Author)