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NASA/CR—2003-212470

Small Technology (SET)—Task 4, Regional Turboprop/ Engine Advanced Study

Robert Reynolds, Ram Srinivasan, Geoffrey Myers, and Manuel Cardenas AlliedSignal , Phoenix, Arizona

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Small Engine Technology (SET)—Task 4, Regional Turboprop/Turbofan Engine Advanced Combustor Study

Robert Reynolds, Ram Srinivasan, Geoffrey Myers, and Manuel Cardenas AlliedSignal Engines, Phoenix, Arizona

Prepared under Contract NAS3–27483

National Aeronautics and Space Administration

Glenn Research Center

October 2003 Document History

This research was originally published internally as AST010 in March 1998.

This report contains preliminary findings, subject to revision as analysis proceeds.

Note that at the time of research, the NASA Lewis Research Center was undergoing a name change to the NASA John H. Glenn Research Center at Lewis Field. Both names may appear in this report.

Available from NASA Center for Aerospace Information National Technical Information Service 7121 Standard Drive 5285 Port Royal Road Hanover, MD 21076 Springfield, VA 22100

Available electronically at http://gltrs.grc.nasa.gov NASA/CR—2003-212470 iii NASA/CR—2003-212470 iv 9 NASA/CR—2003-212470 vi NASA/CR—2003-212470 vii NASA/CR—2003-212470 viii NASA/CR—2003-212470 1 NASA/CR—2003-212470 2 NASA/CR—2003-212470 3 NASA/CR—2003-212470 4 NASA/CR—2003-212470 5 NASA/CR—2003-212470 6 NASA/CR—2003-212470 7 NASA/CR—2003-212470 8 NASA/CR—2003-212470 9 NASA/CR—2003-212470 10 NASA/CR—2003-212470 11 NASA/CR—2003-212470 12 NASA/CR—2003-212470 13 NASA/CR—2003-212470 14 NASA/CR—2003-212470 15 NASA/CR—2003-212470 16 NASA/CR—2003-212470 17 NASA/CR—2003-212470 18 NASA/CR—2003-212470 19 NASA/CR—2003-212470 20 NASA/CR—2003-212470 21 NASA/CR—2003-212470 22 NASA/CR—2003-212470 23 NASA/CR—2003-212470 24 NASA/CR—2003-212470 25 NASA/CR—2003-212470 26 NASA/CR—2003-212470 27 NASA/CR—2003-212470 28 NASA/CR—2003-212470 29 NASA/CR—2003-212470 30 NASA/CR—2003-212470 31 NASA/CR—2003-212470 32 NASA/CR—2003-212470 33 NASA/CR—2003-212470 34 NASA/CR—2003-212470 35 NASA/CR—2003-212470 36 NASA/CR—2003-212470 37 NASA/CR—2003-212470 38 NASA/CR—2003-212470 39 NASA/CR—2003-212470 40 NASA/CR—2003-212470 41 NASA/CR—2003-212470 42 NASA/CR—2003-212470 43 NASA/CR—2003-212470 44 NASA/CR—2003-212470 45 NASA/CR—2003-212470 46 NASA/CR—2003-212470 47 NASA/CR—2003-212470 48 NASA/CR—2003-212470 49 NASA/CR—2003-212470 50 NASA/CR—2003-212470 51 NASA/CR—2003-212470 52 NASA/CR—2003-212470 53 NASA/CR—2003-212470 54 NASA/CR—2003-212470 55 NASA/CR—2003-212470 56 NASA/CR—2003-212470 57 NASA/CR—2003-212470 58 NASA/CR—2003-212470 59 NASA/CR—2003-212470 60 NASA/CR—2003-212470 61 NASA/CR—2003-212470 62 NASA/CR—2003-212470 63 NASA/CR—2003-212470 64 NASA/CR—2003-212470 65 NASA/CR—2003-212470 66 NASA/CR—2003-212470 67 NASA/CR—2003-212470 68 NASA/CR—2003-212470 69 NASA/CR—2003-212470 70 NASA/CR—2003-212470 71 REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188), Washington, DC 20503. 1. AGENCY USE ONLY (Leave blank) 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED October 2003 Final Contractor Report 4. TITLE AND SUBTITLE 5. FUNDING NUMBERS Small Engine Technology (SET)—Task 4, Regional Turboprop/Turbofan Engine Advanced Combustor Study WU–538–17–10–00 6. AUTHOR(S) NAS3–27483 Robert Reynolds, Ram Srinivasan, Geoffrey Myers, and Manuel Cardenas

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING ORGANIZATION AlliedSignal Engines REPORT NUMBER 111 S. 34th Street P.O. Box 52180 E–14008 Phoenix, Arizona 85072–2180

9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSORING/MONITORING AGENCY REPORT NUMBER National Aeronautics and Space Administration Washington, DC 20546–0001 NASA CR—2003-212470

11. SUPPLEMENTARY NOTES This research was originally published internally as AST010 in March 1998. This Final Report, prepared by AlliedSignal Engines (AE), Phoenix, Arizona, a division of the Aerospace Sector of AlliedSignal, Inc., provides a summary of the research efforts performed by AE under the Small Engines Technology (SET) program, Task 4—Advanced Combustor Study, conducted for the National Aeronautics and Space Administration Glenn Research Center, Cleveland, OH. The work reported was performed under Contract No. NAS3–27483 during the reporting period February 1995—February 1996. Project Manager, Paul F. Penko, and Systems Division, NASA Glenn Research Center, organization code 5830, 216–433–5356.

12a. DISTRIBUTION/AVAILABILITY STATEMENT 12b. DISTRIBUTION CODE Unclassified -Unlimited Subject Category: 07 Distribution: Nonstandard Available electronically at http://gltrs.grc.nasa.gov This publication is available from the NASA Center for AeroSpace Information, 301–621–0390. 13. ABSTRACT (Maximum 200 words) Under the SET Program Task 4—Regional Turboprop/Turbofan Engine Advanced Combustor Study, a total of ten low-emissions system concepts were evaluated analytically for three different gas engine geometries and three different levels of oxides of nitrogen (NOx) reduction technology, using an existing AlliedSignal three-dimensional (3-D) Computational Fluid Dynamics (CFD) code to predict Landing and Takeoff (LTO) engine cycle emission values. A list of potential Barrier Technologies to the successful implementation of these low-NOx combustor designs was created and assessed. A trade study was performed that ranked each of the ten study configurations on the basis of a number of manufacturing and durability factors, in addition to emissions levels. The results of the trade study identified three basic NOx-emissions reduction concepts that could be incorporated in proposed follow-on combustor technology development programs aimed at demonstrating low-NOx combustor hardware. These concepts are: high-flow swirlers and primary orifices, fuel-preparation cans, and double-dome swirlers.

14. SUBJECT TERMS 15. NUMBER OF PAGES 83 Regional engine; Turbofan; Turboprop; Emissions 16. PRICE CODE

17. SECURITY CLASSIFICATION 18. SECURITY CLASSIFICATION 19. SECURITY CLASSIFICATION 20. LIMITATION OF ABSTRACT OF REPORT OF THIS PAGE OF ABSTRACT Unclassified Unclassified Unclassified NSN 7540-01-280-5500 Standard Form 298 (Rev. 2-89) Prescribed by ANSI Std. Z39-18 298-102