Pollution of the environment and the atmosphere is a problem that we constantly face in our everyday, with transport and industry being two of the main problems. In order to regulate and limit air pollution the focus is on monitoring CO2 emissions. Continuing airworthiness organizations and aircraft operators are also engaged in carbon footprint regulations. Namely, companies are obliged to prepare reports on the amount of CO2 produced on the annual basis. The regulation allows companies to produce a report in several possible ways and use different tools for the theoretical calculation of CO2 emissions and also the possibility of calculation CO2 emissions based on actual fuel consumption. The problem arises in choosing the most appropriate model for an individual company and thus avoiding additional costs. The paper presents a method of calculating CO2 emissions based on fuel consumption for the Embraer ERJ 145 aircraft and comparison of theoretical and practical models for calculating CO2 emissions. Based on the analysis of the results we also compared the turbofan aircraft and turboprop aircraft based in their fuel economy and CO2 production.
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