Material requirements for the High Speed Civil TransportUnder NASA-sponsored High Speed Research (HSR) programs, the materials and processing requirements have been identified for overcoming the environmental and economic barriers of the next generation High Speed Civil Transport (HSCT) propulsion system. The long (2 to 5 hours) supersonic cruise portion of the HSCT cycle will place additional durability requirements on all hot section engine components. Low emissions combustor designs will require high temperature ceramic matrix composite liners to meet an emission goal of less than 5g NO(x) per Kg fuel burned. Large axisymmetric and two-dimensional exhaust nozzle designs are now under development to meet or exceed FAR 36 Stage III noise requirements, and will require lightweight, high temperature metallic, intermetallic, and ceramic matrix composites to reduce nozzle weight and meet structural and acoustic component performance goals. This paper describes and discusses the turbomachinery, combustor, and exhaust nozzle requirements of the High Speed Civil Transport propulsion system.
Stephens, Joseph R. (NASA Lewis Research Center Cleveland, OH, United States)
Hecht, Ralph J. (Pratt & Whitney Group West Palm Beach, FL, United States)
Johnson, Andrew M. (GE Aircraft Engines Cincinnati, OH, United States)
August 16, 2013
January 1, 1993
Publication: In: ISABE - International Symposium on Air Breathing Engines, 11th, Tokyo, Japan, Sept. 20-24, 1993, Proceedings. Vol. 1 (A93-53976 23-07)