Öz Air quality standards set forth by the Clean Air Act and its amendments have established guidelines for the reduction of harmful ground-level emissions from the aviation sector. Aviation industries are vulnerable to the energy crisis and simultaneously posed environmental concerns. Proposed engine technology advancements could reduce environmental impact and energy consumption. Substituting the source of jet fuel from fossil-based fuel to biomass-based will help reduce emissions and minimize the energy crisis. This is a kind of biomass energy (bioenergy), biodiesel, can be used in diesel engines as an alternative fuel. Biodiesel is produced from renewable resources such as vegetable and animal oils. Biodiesel is sustainable, environmentally friendly, non-toxic, an alternative fuel for diesel engines. In this study, the addition of 5%, 10%, 15% and 20% of the biodiesel produced from different sources to the jet fuel and the fuel properties of the blends obtained were compared. Considering the properties of the biodiesel used, it is seen that the fuel with the highest density, viscosity, flash point and freezing point was WCO (892kg / m3, 4.66mm / s2, 180oC, -8oC). Accordingly, WCO biodiesel blends were found to be higher than others. In addition, it was determined that the algae biodiesel used in the study had the best density (881 kg / m3), Flash point (150oC) and Freezing point (-14oC), and the Cotton biodiesel met the most suitable viscosity value.
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