Evaluation of the impact of alternative fuel use on the emissions and performance of a service-exposed T56 engine

DOIResolve DOI: http://doi.org/10.1115/GT2012-69978
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Proceedings titleProceedings of the ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation
ConferenceASME Turbo Expo 2012: Turbine Technical Conference and Exposition, GT 2012, June 11-15, 2012, Copenhagen, Denmark
Pages425435; # of pages: 11
SubjectBorescope inspection; Combustion characteristics; Emissions monitoring; Engine performance; Flight instrumentations; Operational requirements; Performance and emissions; Vibration characteristics; Alternative fuels; Engines; Exhibitions; Gas turbines; Durability
AbstractAlternative fuel sources are becoming an operational reality; these fuels have the potential to reduce emissions, improve combustion characteristics and to increase fuel supply security. A test with a T56 turboprop engine was performed to demonstrate that a CHEFA/JP8 (Camelina Hydroprocessed Ester and Fatty Acids and standard JP8) fuel blend would meet operational requirements. The primary test objective was to assess whether a fuel change had an immediate impact on the engine condition, performance, emissions or vibration characteristics. This paper presents test results comparing engine performance with JP8 and a 50/50 blend of JP8 and CHEFA. Comparison runs were conducted before and after a 20 hour ground durability test with the CHEFA fuel blend. A nearly time-expired, nacelle-dressed T56 on an outdoor test stand was tested. The engine was equipped with minimallyintrusive non-standard pressure, temperature and emissions monitoring equipment, and a field vibration assessment suite in addition to the standard flight instrumentation. This paper discusses the test plan, data acquisition methods, results and data repeatability. The performance and emissions results are compared to the changes predicted theoretically from the fuel properties. Observations from the borescope inspections before, during and after the 20 hour durability test are also presented. The lessons learned in this test could be applied to future fuel or process-change tests, and the results provide a performance baseline for engine health assessment. Copyright © 2012 by Her Majesty the Queen in Right of Canada
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21270868
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Record identifier5c4ffbf5-acb3-4e1a-b78d-02ab18f7aec1
Record created2014-02-17
Record modified2016-05-09
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