The impact of JP-4/JP-8 conversion on aircraft engine exhaust emissions. Interim technical report Jul 75--Feb 76
The proposed conversion of predominant Air Force fuel usage from JP-4 to JP-8 has created the need to examine the dependence of engine pollutant emission on fuel type. Available data concerning the effect of fuel type on emissions has been reviewed. T56 single combustor testing has been undertaken to determine JP-4/JP-8 emission variations over a wide range of simulated engine cycle operating conditions at idle. In addition, a J85-5 engine was tested using JP-4 and JP-8. Results of the previous and new data collectively led to the following conclusions regarding conversion to JP-8: (a) HC and CO emission changes will depend upon individual combustor design features, (b) no change to NOx emission will occur, and (c) an increase in smoke/particulate emissions will result. It is recommended that these findings be incorporated into air quality analytical models to define the overall impact of the proposed conversion. Further, it is recommended that combustor analytical models be employed to attempt prediction of the results described herein. Should these models be successful, analytical prediction of JP-8 emissions from other Air Force engine models may be substituted for more combustor rig or engine testing. (auth)
- Research Organization:
- Air Force Aero-Propulsion Lab., Wright-Patterson AFB, OH (USA)
- OSTI ID:
- 7293710
- Report Number(s):
- AD-A-026546; AFAPL-TR-76-20
- Country of Publication:
- United States
- Language:
- English
Similar Records
CHARACTERIZATION OF ROTATING-WING AIRCRAFT EMISSIONS
Evaluation of methods for characterizing the fine particulate matter emissions from aircraft and other diffusion flame combustion aerosol sources
Related Subjects
JET ENGINE FUELS
TESTING
TURBOJET ENGINES
EXHAUST GASES
AIR POLLUTION ABATEMENT
AIRCRAFT
CARBON MONOXIDE
COMBUSTORS
DESIGN
HYDROCARBONS
NITROGEN OXIDES
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
ENGINES
FUELS
GASEOUS WASTES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
WASTES
330701* - Emission Control- Nitrogen Oxides
330702 - Emission Control- Carbon Monoxide
330704 - Emission Control- Hydrocarbons
330800 - Emission Control- Alternative Fuels