Design and experimental evaluation of a high temperature radial turbine with a moveable sidewall nozzleThe uncooled, 2.27 kg/sec mass flow radial turbine designed to operate at 1477 K in the gas generator of an advanced, variable-capacity 683 kW turboshaft engine was configured with a cooled, movable sidewall nozzle capable of changing the stage flow capacity from 50 to 100 percent of maximum. Overall performance test data were obtained in a turbine test rig that duplicated engine Reynolds numbers; attention is given to the changing of flow capacity by moving the hub or shroud sidewall, vane sidewall leakage, vaneless space sidewall geometry, and nozzle-cooling injection. Data are presented in the form of turbine flow, efficiency, work parameter, and performance mappings.
Document ID
19880043549
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Rogo, Casimir (Teledyne, Inc. Teledyne CAE Div., Toledo, OH, United States)
Roelke, Richard J. (NASA Lewis Research Center Cleveland, OH, United States)