This paper describes the development and testing of a gas sampling probe that quenches chemical reactions by using supersonic expansion and helium dilution. Gas sampling probes are required for accurate measurement of exhaust emissions species, which is critical to determine the performance of an aircraft engine. The probe was designed through rounds of computational modeling and laboratory testing and was subsequently manufactured and then tested at the University of Tennessee Space Institute behind a General Electric J85 turbojet engine at different power settings: idle, maximum military, and afterburning. The experimental test results demonstrated that the chemical quick-quench (CQQ) probe suppressed the oxidation of carbon monoxide (CO) inside the probe system and preserved more CO at afterburning conditions. In addition, the CQQ probe prevented hydrocarbons from being partially oxidized to form CO at idle powers and measured higher hydrocarbons and lower CO emission compared with a conventional probe at that low power condition. The CQQ probe also suppressed nitrogen dioxide to nitric oxide (NO) conversion through all engine power settings. These data strongly support the conclusion that the CQQ probe is able to quench unwanted chemical reactions inside the probe for all engine power levels.
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July 2011
Research Papers
Minimizing Sampling Loss in Trace Gas Emission Measurements for Aircraft Engines by Using a Chemical Quick-Quench Probe
Elena de la Rosa Blanco,
Elena de la Rosa Blanco
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Jay Peck,
Jay Peck
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Richard C. Miake-Lye,
Richard C. Miake-Lye
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Frank B. Hills,
Frank B. Hills
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Ezra C. Wood,
Ezra C. Wood
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Scott C. Herndon,
Scott C. Herndon
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Kurt D. Annen,
Kurt D. Annen
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Paul E. Yelvington,
Paul E. Yelvington
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
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Timothy Leach
Timothy Leach
CFD Research Corp.
, 215 Wynn Drive, Huntsville, AL 35805
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Elena de la Rosa Blanco
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Jay Peck
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Richard C. Miake-Lye
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Frank B. Hills
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Ezra C. Wood
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Scott C. Herndon
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Kurt D. Annen
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Paul E. Yelvington
Aerodyne Research, Inc.
, 45 Manning Road, Billerica, MA 01821-3976
Timothy Leach
CFD Research Corp.
, 215 Wynn Drive, Huntsville, AL 35805J. Eng. Gas Turbines Power. Jul 2011, 133(7): 071602 (7 pages)
Published Online: March 16, 2011
Article history
Received:
April 27, 2010
Revised:
May 13, 2010
Online:
March 16, 2011
Published:
March 16, 2011
Citation
Blanco, E. D. L. R., Peck, J., Miake-Lye, R. C., Hills, F. B., Wood, E. C., Herndon, S. C., Annen, K. D., Yelvington, P. E., and Leach, T. (March 16, 2011). "Minimizing Sampling Loss in Trace Gas Emission Measurements for Aircraft Engines by Using a Chemical Quick-Quench Probe." ASME. J. Eng. Gas Turbines Power. July 2011; 133(7): 071602. https://doi.org/10.1115/1.4002665
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