COLD-AIR PERFORMANCE OF FREE POWER TURBINE DESIGNED FOR 112-KILOWATT AUTOMOTIVE GAS-TURBINE ENGINE. 2: EFFECTS OF VARIABLE STATOR-VANE-CHORD SETTING ANGLE ON TURBINE PERFORMANCE
The cold-air performance of an axial-flow power turbine with a variable stator designed for a 112-kW automotive gas-turbine engine was determined at speeds from 30 to 110 percent of design and at pressure ratios from 1.11 to 2.67. Performance is presented in terms of equivalent mass flow, torque, power, and efficiency for stator-vane-chord setting angles of 26 degs, 30 degs, 35 degs (design), 40 degs, 45 degs, and 50 degs. Turbine braking performance at a nominal stator setting angle of 107 degs is also presented. Turbine efficiency increased with increasing stator setting angle. A 10-point efficiency increase was obtained by opening the stator from the design setting angle of 35 degs to a setting angle of 45 degs.
Department of the NavyThe Pentagon
Washington, DC United States 20350
- Mclallin, K L
- Kofskey, M G
- Publication Date: 1979-2
- Pagination: 53 p.
- TRT Terms: Braking; Economic efficiency; Engines; Equipment tests; Flow; Gas turbines; Mass; Performance; Power; Stators; Torque; Turbine engines; Turbines; Vane shear tests; Vanes (Machinery); Vehicle power plants
- Uncontrolled Terms: Efficiency
- Old TRIS Terms: Automobile engines; Axial flow; Axial flow turbines; Cold flow tests; Engine tests; Mass flow
- Subject Areas: Economics; Energy; Highways; Vehicles and Equipment;
- Accession Number: 00192304
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NASA-TM-78993 Final Rpt.
- Contract Numbers: EC-77-A-31-1011
- Files: TRIS
- Created Date: Jul 31 1979 12:00AM