CF6-50 ENGINE EMISSIONS TESTING WITH TRAVERSE PROBE

The variation in emissions over the exhaust area of a General Electric CF6-50 model engine was investigated in order to determine the requirements for a representative sample. The emission measurements were made in a systematic pattern of 120 sample points using a traversing probe system. These data were used to develop detailed emission profiles at three power levels. At idle power, variations over the exhaust area are attributed to the particular fueling pattern used in current CF6-50 model engines. At higher power levels, where uniform fueling is employed, emission levels are more uniform and are characterized by a slightly peaked radial profile. Average values from the 120-point traverse were comapred with selected 12-point averages in the EPA prescribed cruciform pattern. Generally good agreement between the two averages was obtained. (Author)

• Corporate Authors:

  General Electric

  Marine Turbine & Gear Engineer, 1100 Western Ave
  Lynn, MA  United States  01910

  Federal Aviation Administration

  William J. Hughes Technical Center, Airport Technology Research and Development Branch
  Atlantic City International Airport
  Atlantic City, NJ  United States  08405
• Authors:
  • Lyon, T F
  • Bahr, D W
• Publication Date: 1981-1

Media Info

• Pagination: 81 p.

Subject/Index Terms

• TRT Terms: Air pollution; Carbon dioxide; Carbon monoxide; Concentration (Chemistry); Exhaust gases; Hydrocarbons; Nitric oxide; Nitrogen oxides; Pollutants; Power level (Electricity); Probes (Measuring devices); Sampling; Test procedures; Variables
• Uncontrolled Terms: Profiles
• Old TRIS Terms: High bypass turbofans; Power levels; Probes; Traversing mechanisms; Variations
• Subject Areas: Environment;

Filing Info

• Accession Number: 00343704
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: R81AEG213, FAA-CT-81-18
• Contract Numbers: DOT-FA79NA-6010
• Files: NTIS, USDOT
• Created Date: Oct 28 2003 12:00AM