Effect of the wing airfoil shape on the aerodynamics and performance of a Jet-Trainer Aircraft – An optimisation approach

The research focuses on analysing the effect of an airfoil’s wing shape on an aircraft performance in order to optimize the aircraft’s performance. The aircraft that would be focused on in this research is the L-39C Albatros.

The combat capabilities of the aircraft play a vital role in the battles. Therefore, national armies always strive to develop these capabilities. One key player in developing the performance of military aircraft is the aerodynamic characteristics. In this project, the effect of the wing airfoil shape on the aerodynamic characteristics and performance of the popular jet trainer aircraft L-39C is analysed. The available experimental data of different airfoil shapes are used to determine the aerodynamic characteristics of the aircraft for each airfoil. The airfoil that is currently on the L-39C is NACA 64A012, however, there exist many airfoils that has the potential for the L-39C, such as NACA 0012, NACA 2412, NACA 0003, NACA 64-206 and possibly other type of airfoils such as NASA LS(1)-0417, S809 and Eppler-387. each airfoil has its effect on the aerodynamics the aircraft and hence on its performance. The aircraft performance in terms of maximum/minimum speed, never to exceed speed, manoeuvrability, range, endurance, rate of climb, service ceiling, take-off, and landing are calculated and analysed. The aim of this analysis is to optimize L-39C performance and improve its combat capabilities.

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