The rapid development of aerospace and industrial technologies have caused highly developed and complex aircraft design process. Therefore, developers or designers make every effort to adapt to the new design process and technologies, or the possibility to make errors during the design process has increased. The problem is that mistakes during the design process can increase the cost due to redesigning. Also it can cause serious safety problems. Therefore, to ensure the safety of the aircraft during the design process, certification design integration technologies become more important. Aerodynamic analysis for the whole aircraft made using computational fluid dynamics to determine whether the designed aircraft satisfies the certification regulations has been presented in the paper. The three-dimensional Navier-Stokes equations were used to determine the characteristics of the flow field around the aircraft, and k-w Shear Stress Transport (SST) model was used to interpretate the turbulent flow. Stall prediction process using proposed and the necessary aerodynamic coefficients such as lift, drag, and pitching moment coefficients have successively been obtained with various angle of attack. Careful numerical investigation using the proposed approach made it possible to determine satisfaction of the stall certification regulation for the dircaft of interest.
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