Abstract: This work presents the development of software, implemented for Windows using Visual Studio and C#, aimed at estimating the fuel load required for a commercial aircraft prior to departure. The system is based on the operational parameters of the Boeing 777-300ER equipped with GE90-115B engines and allows the user to select departure and destination airports from a database containing major international airports and their respective geographic coordinates. The distance between airports is calculated using the WGS-84 geodetic model, a standard widely adopted in international aviation, ensuring greater accuracy in distance computation. In addition to distance, the system considers operational factors such as onboard weight, mandatory fuel reserves, and other parameters defined by civil aviation safety standards. The application also enables the inclusion of alternate airports and estimates total fuel consumption based on realistic and safe flight scenarios. The results are displayed clearly to the user, serving as a support tool for academic simulations and operational studies. Complementing the software development, the associated monograph conducts a comparative analysis between commercial aircraft from different generations, focusing on fuel efficiency. The comparison involves an older model, predominantly built with aluminium, and a more modern aircraft constructed from composite materials. The analysis highlights performance gains associated with higher cruising altitudes, reduced drag, and lighter structural weight, demonstrating the direct impact of these variables on fuel consumption.

Keywords: Flight planning, aircraft performance, fuel consumption, commercial aviation

Pages: 134-140

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