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Pages 2-6

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From page 2...
... 2 Exhaust Emissions from In-Use General Aviation Aircraft Figure S-1. Distributions of piston engine emission indices (EIs)
From page 3...
... Exhaust Emissions from In-Use General Aviation Aircraft 3 • The research team demonstrated an alternate statistical method (Monte Carlo simulations) that can constrain these confidence intervals.
From page 4...
... 4 C H A P T E R 1 Much work has been done in quantifying the emissions from large commercial aircraft and their engines during operation in large airports. Regional airports serving the GA community are much smaller than a typical hub airport for commercial aircraft.
From page 5...
... Background 5 advantage of acquiring data reflecting actual operation of in-use engines in the airframe, rather than idealized states of new engines in certification testing rigs. This distinction is especially important for piston engine aircraft, because there is large variability in how piston engines are operated and, thus, in the emissions performance for even the same engine model.
From page 6...
... 6 Research Approach Pollutants in Exhaust Four main pollutant types were measured as a part of this study: nitrogen oxides, carbon monoxide, total hydrocarbons, and PM. The sources and importance of these pollutant species are described.

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