Journal article
Minimizing Sampling Loss in Trace Gas Emission Measurements for Aircraft Engines by Using a Chemical Quick-Quench Probe
Journal of engineering for gas turbines and power, v 133(7), p71602
01 Jul 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
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 (NO2) 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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Details
- Title
- Minimizing Sampling Loss in Trace Gas Emission Measurements for Aircraft Engines by Using a Chemical Quick-Quench Probe
- Creators
- Elena de la Rosa Blanco - Aerodyne ResearchJay Peck - Aerodyne ResearchRichard C Miake-Lye - Aerodyne ResearchFrank B Hills - Aerodyne ResearchEzra C Wood - Aerodyne ResearchScott C Herndon - Aerodyne ResearchKurt D Annen - Aerodyne ResearchPaul E Yelvington - Aerodyne ResearchTimothy Leach - CFD Research Corporation (United States)
- Publication Details
- Journal of engineering for gas turbines and power, v 133(7), p71602
- Publisher
- ASME
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemistry
- Web of Science ID
- WOS:000288807900004
- Scopus ID
- 2-s2.0-79953097725
- Other Identifier
- 991020902867104721
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- Collaboration types
- Industry collaboration
- Domestic collaboration
- Web of Science research areas
- Engineering, Mechanical