Characterization of Chemicals on Engine Exhaust Particles: F101 and F110 Engines.

摘要

Assessment of the environmental impact of aircraft operations is required by Air force regulations. This program was undertaken to quantify chemicals associated with particulate emissions of two Air Force turbine engines (F101 and F110). The emissions tests were carried out using a test cell at Tinker AFB OK. Emissions were sampled at four power settings for each engine. Measurements were made of particle mass concentration, elemental (inorganic) components, and of target PAH and NO2-PAH vapor and particulate components. A sampling device was designed and constructed for use on top of the test cell exhaust stack. Analyses of samples collected were performed using analytical balances for mass determinations, Spark Source Mass Spectroscopy for elemental determinations, gas chromatography-mass spectroscopy for analyses of PAH, and Scanning Electron Microscopy for examination of particle morphology. Results obtained indicate that these two engines have much lower emission concentrations of particles and organics than any engines we have previously tested. The emissions of target PAH compounds found to be lowest for these engines at full (nonafterburning) power, while the particulate emissions are highest at this power.