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TITLE AND SUBTITLE:
Wave Rotor Demonstrator Engine Assessment
AUTHOR(S):
Snyder, Philip, H.
REPORT DATE:
1996-06-01
FUNDING NUMBERS:
WU-505-62-10
PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES):
Allison Engine Company, Inc. P.O. Box 420 Indianapolis, Indiana
PERFORMING ORGANIZATION REPORT NUMBER:
E-10307
SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES):
National Aeronautics and Space Administration Lewis Research Center Cleveland, Ohio 44135-3191
REPORT TYPE AND DATES COVERED:
Final Contractor Report
SPONSORING/MONITORING AGENCY REPORT NUMBER:
NASA/CR-198496
SUPPLEMENTARY NOTES:
Project Manager, Gary J. Skoch, Vehicle Technology Center, U.S. Army Research Laboratory, NASA Lewis Research Center, organization code 0300, (216) 433-3396.
ABSTRACT:
The objective of the program was to determine a wave rotor demonstrator engine concept using the Allison 250 series engine. The results of the NASA LeRC wave rotor effort were used as a basis for the wave rotor design. A wave rotor topped gas turbine engine was identified which incorporates five basic requirements of a successful demonstrator engine. Predicted performance maps of the wave rotor cycle were used along with maps of existing gas turbine hardware in a design point study. The effects of wave rotor topping on the engine cycle and the subsequent need to rematch compressor and turbine sections in the topped engine were addressed. Comparison of performance of the resulting engine is made on the basis of wave rotor topped engine versus an appropriate baseline engine using common shaft compressor hardware. The topped engine design clearly demonstrates an impressive improvement in shaft horsepower (+11.4%) and SFC (-22%). Off design part power engine performance for the wave rotor topped engine was similarly improved including that at engine idle conditions. Operation of the engine at off design was closely examined with wave rotor operation at less than design burner outlet temperatures and rotor speeds. Challenges identified in the development of a demonstrator engine are discussed. A preliminary design was made of the demonstrator engine including wave rotor to engine transition ducts. Program cost and schedule for a wave rotor demonstrator engine fabrication and test program were developed.
SUBJECT TERMS:
Wave rotor; Compressor; Turbine
NUMBER OF PAGES:
72
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