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Experimental Evaluation of a Low Emissions High Performance Duct Burner for Variable Cycle Engines (VCE)An evaluation was conducted with a three stage Vorbix duct burner to determine the performance and emissions characteristics of the concept and to refine the configuration to provide acceptable durability and operational characteristics for its use in the variable cycle engine (VCE) testbed program. The tests were conducted at representative takeoff, transonic climb, and supersonic cruise inlet conditions for the VSCE-502B study engine. The test stand, the emissions sampling and analysis equipment, and the supporting flow visualization rigs are described. The performance parameters including the fuel-air ratio, the combustion efficiency/exit temperature, thrust efficiency, and gaseous emissions calculations are defined. The test procedures are reviewed and the results are discussed.
Document ID
19800008814
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Lohmann, R. P. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Mador, R. J. (Pratt and Whitney Aircraft East Hartford, CT, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1979
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
PWA-5513-32A
NASA-CR-159694
Accession Number
80N17074
Funding Number(s)
CONTRACT_GRANT: NAS3-20602
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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