F2010A056
Aero-Engine Emission Testing under Real Operating Conditions of a Small Aircraft
Transportation is currently one of the most dynamically changing fields of the economy and its changes are directly related to the regional economic growth. The main aim of the transport development is to reduce emissions of harmful exhaust elements during its utilization. Although special attention is paid to land transport as the mostly used, over recent years sea and air transport have also been preceived as a growing threat. Current law concerning the influence of the air transport on the environment introduced by EPA, ICAO, JAR 34, FAR 34 refers mainly to the emission of noise and harmful exhaust compounds, especially nitric oxides. The acts mainly concern flow engines and define procedures for stationary tests realization with specified engine function parameters. The research procedures contained in ICAO, FAR 34 norms are the actual standards for the estimation of the emissions of the aircrafts with turbine propulsion. These procedures are stationary and they are carried out on the parameters of the environmental conditions measured according to sea level. These standards do not include value limits of the harmful compounds contained in exhaust gases of the piston engines. Due to the difference in combustion processes realized in piston engine and in turbine engine one may assume that the emission value of the harmful compounds of the exhaust gases at a rate of one cubic metre will be higher than the emission produced by turbine engine. Considering a significant increase in the number of exploited General Aviation aircrafts the exhaust gases produced by piston engines can pose a serious threat to the natural environment. The nitric oxide emission in the higher parts of the atmosphere with its negative influence on oxygene stratum seems to be the issue of special importance as it contributes significantly to the enhanced greenhouse effect. Due to a rapid development of air transportation there is a need for the assessment of real environmental risk related to the aircraft operation. The main environmental perils are the toxic exhaust emissions. The paper presents the results of the emission tests of a small airplane engine under real operating conditions.
Key words: emission, small aircraft engine, measurements under real operating conditions
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Poster presentation: Environmentally friendly vehicles