Evaluation of aircraft performance parameters by multi-criteria decision making method

Since prehistoric times, humans have observed the flight of birds and wanted to fly by imitating them, although they lacked the power to do so. Logic dictated that if birds' small muscles could lift and support them, then humans' larger muscles should be able to replicate that feat. Over the centuries, people have achieved their dreams of flying with the combination of science, technology and the human brain. Various aircraft, which are developing gradually, have a very important value in today's world, whether in the civil or military field. Therefore, the safety of the flight, the maintenance of the aircraft and obtaining the highest performance efficiency from them are the biggest responsibility of the airline companies. It is very important that the aircraft performance remains balanced and efficient with long-haul flights for many hours. A lot of work is being done to prevent the performance of the aircraft from deteriorating. However, there are many factors that affect it. In this study, factors that may affect aircraft performance were determined by conducting a comprehensive literature review and how much they could affect was analyzed with the help of Stepwise Weight Assessment Ratio Analysis (SWARA), which is a Multi-Criteria Decision Making method. As a result of the analysis, it was determined that the Weight criterion among the selected criteria could have a greater effect on the aircraft performance. Keywords: Aviation, Aircraft performance, Multi-criteria decision making, SWARA