Ayar, MuratKarakoç, Tahir Hikmet2023-05-052023-05-052023https://hdl.handle.net/11467/6601https://doi.org/10.1016/j.ijhydene.2022.12.020Research has focused on green energy alternatives that can be used instead of fossil fuels to reduce aviation-related emissions and achieve zero-emission targets. One of the most promising alternatives is hydrogen-based fuel cells. Determining the fuel cell type closest to the hydrogen side solution to the airplane emission problem will help guide the researchers working on this issue. Multi-criteria decision-making methods were used for the first time in applying fuel cells to aircraft. The study will pioneer the use of MCDM methods in determining the usability of fuel cells in other areas and vehicles. This study proposes a decision mechanism to evaluate the most suitable fuel cell type integrated into a normal class small aircraft hybrid powertrain. Accordingly, the decision problem was transformed into a hierarchical structure by determining five fuel cell alternatives and twelve criteria in consultation with expert decision-makers. The decision problem has been solved with the Analytic Hierarchy Process, one of the multi-criteria decision-making methods in accordance with its structure. The results showed that PEM fuel cells are best suited for integration into hybrid aircraft, with in power-related criteria such as Specific power, Power density, and Power capacity. Also, our results cast a new light on the properties of fuel cells to be considered for use in aircrafteninfo:eu-repo/semantics/embargoedAccessFuel cells, Small aircraft, Multi-criteria decision makingArticleQ1WOS:001035657900001N/A2-s2.0-8514875616010.1016/j.ijhydene.2022.12.020