Impacts of Broadened-Specification Fuels on Aircraft Turbine Engine Combustors FREE

[+] Author Affiliations
D. W. Bahr

General Electric Co., Cincinnati, OH

Paper No. 81-GT-2, pp. V002T06A001; 9 pages
  • ASME 1981 International Gas Turbine Conference and Products Show
  • Volume 2: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Houston, Texas, USA, March 9–12, 1981
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7962-7
  • Copyright © 1981 by ASME


In the future, aircraft turbine engines may be required to accommodate fuels with lower hydrogen contents, fluidity/volatility characteristics and thermal stability ratings than those of present-day jet fuels. The key results of several investigations conducted to quantify the impacts of such fuel property changes on the performance, pollutant emission and durability characteristics of aircraft turbine engine combustors are reviewed. These results were obtained in both component and engine tests of the current production combustors used in the CF6-6, CF6-50, F101/CFM56 and J79/CJ805 engines. Based on these results, it is concluded that the most significant concerns associated with such fuel property changes are decreased combustor life, decreased ground starting/altitude relight capabilities and increased fuel injector gumming/coking tendencies. The combustor design improvements that appear to be needed to permit the use of jet fuels of significantly lower quality than present-day fuels are also reviewed.

Copyright © 1981 by ASME
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