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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 performanceThe 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.
Document ID
19790009688
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Mclallin, K. L.
(NASA Lewis Research Center Cleveland, OH, United States)
Kofskey, M. G.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 3, 2013
Publication Date
February 1, 1979
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
DOE/NASA/1011-78/28
E-9775
NASA-TM-78993
Accession Number
79N17859
Funding Number(s)
CONTRACT_GRANT: EC-77-A-31-1011
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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