Design and evaluation of combustors for reducing aircraft engine pollutionVarious techniques and test results are briefly described and referenced for detail. The effort arises from the increasing concern for the measurement and control of emissions from gas turbine engines. The greater part of this research is focused on reducing the oxides of nitrogen formed during takeoff and cruise in both advanced CTOL, high pressure ratio engines, and advanced supersonic aircraft engines. The experimental approaches taken to reduce oxides of nitrogen emissions include the use of: multizone combustors incorporating reduced dwell time, fuel-air premixing, air atomization, fuel prevaporization, water injection, and gaseous fuels. In the experiments conducted to date, some of these techniques were more successful than others in reducing oxides of nitrogen emissions. Tests are being conducted on full-annular combustors at pressures up to 6 atmospheres and on combustor segments at pressures up to 30 atmospheres.
Jones, R. E. (NASA Lewis Research Center Cleveland, OH, United States)
Grobman, J. (NASA Lewis Research Center Cleveland, OH, United States)
August 7, 2013
September 1, 1973
Publication: AGARD Atmospheric Pollution by Aircraft Engine