Item Details

High-Pressure Combustor Exhaust Emissions With Improved Air-Atomizing and Conventional Pressure-Atomizing Fuel Nozzles

by Robert D. Ingebo and Carl T. Norgren
Format
Book; Government Document; Online; EBook
Published
Washington, D.C. : National Aeronautics and Space Administration ; [Springfield, Va. : For sale by the National Technical Information Service], 1973.
Language
English
Series
NASA Technical Note
Summary
A high-pressure combustor segment 0.456 meter (18 in.) long with a maximum cross section of 0.153 by 0.305 meter (6 by 12 in.) was tested with specially designed air-atomizing and conventional pressure-atomizing fuel nozzles at inlet-air temperatures of 340 to 755 k (610 deg to 1360 R), reference velocities of 12.4 to 26.1 meters per second (41 to 86 ft/sec), and fuel-air ratios of 0.008 to 0.020. Increasing inlet-air pressure from 4 to 20 atmospheres generally increased smoke number and nitric oxide, but decreased carbon monoxide and unburned hydrocarbon concentrations with air-atomizing and pressure-atomizing nozzles. Emission indexes for carbon monoxide and unburned hydrocarbons were lower at 4, 10, and 20 atmospheres, and nitric oxide emission indexes were lower at 10 and 20 atmospheres with air-atomizing than with pressure-atomizing nozzles.
Description
22 p. : ill. ; 27 cm.
Mode of access: Internet.
Notes
  • Prepared at Lewis Research Center.
  • Cover title.
  • Bibliography: p. 11.
Series Statement
NASA technical note ; NASA TN D-7154
Logo for Copyright Not EvaluatedCopyright Not Evaluated
Technical Details

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    a| High-pressure combustor exhaust emissions with improved air-atomizing and conventional pressure-atomizing fuel nozzles c| by Robert D. Ingebo and Carl T. Norgren.
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    a| Washington, D.C. : b| National Aeronautics and Space Administration ; a| [Springfield, Va. : b| For sale by the National Technical Information Service], c| 1973.
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    a| 22 p. : b| ill. ; c| 27 cm.
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    a| NASA technical note ; v| NASA TN D-7154
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    a| Prepared at Lewis Research Center.
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    a| Cover title.
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    a| Bibliography: p. 11.
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    a| A high-pressure combustor segment 0.456 meter (18 in.) long with a maximum cross section of 0.153 by 0.305 meter (6 by 12 in.) was tested with specially designed air-atomizing and conventional pressure-atomizing fuel nozzles at inlet-air temperatures of 340 to 755 k (610 deg to 1360 R), reference velocities of 12.4 to 26.1 meters per second (41 to 86 ft/sec), and fuel-air ratios of 0.008 to 0.020. Increasing inlet-air pressure from 4 to 20 atmospheres generally increased smoke number and nitric oxide, but decreased carbon monoxide and unburned hydrocarbon concentrations with air-atomizing and pressure-atomizing nozzles. Emission indexes for carbon monoxide and unburned hydrocarbons were lower at 4, 10, and 20 atmospheres, and nitric oxide emission indexes were lower at 10 and 20 atmospheres with air-atomizing than with pressure-atomizing nozzles.
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    a| Mode of access: Internet.
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    a| Airplanes x| Turbojet engines x| Combustion.
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    0
    a| Aircraft exhaust emissions.
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    0
    a| Spray nozzles x| Testing.
    650
      
    0
    a| Combustion chambers x| Testing.
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    1
      
    a| Norgren, Carl T.
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    a| United States. b| National Aeronautics and Space Administration.
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    a| Lewis Research Center.
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