Document Type : Original Article
Authors
1
Master's degree, Lecturer, Department of Aircraft, Faculty of Engineering and Flight, Imam Ali University, Tehran
2
Associate Professor, Department of Space Engineering, Faculty of Aerospace Engineering, Malek Ashtar University of Technology, Tehran
3
Assistant Professor, Department of Space Engineering, Faculty of Aerospace Engineering, Malek Ashtar University of Technology, Tehran
10.22034/joae.2025.506477.1271
Abstract
In this research, the Scan Eagle fighter jet was modeled according to the dimensions and sizes of the real model, and innovative wings were designed on it to improve the performance of the aircraft in different flight conditions. 3 innovative models were considered for the aircraft wing; including the triangular delta wing, the trapezoidal wing, and the delta wing with the wing sweep angle. In order to conduct experimental wind tunnel tests, after applying the desired scale to all models, the aircraft were manufactured using a 3D printer. After the studies, the mechanism required to implement the models in the wind tunnel was designed and manufactured. After implementing the models in the wind tunnel and conducting experimental tests on them under the same conditions (speeds of 16, 14, 12, 10, 8, 6, 4 m/s), the results obtained from this research have been examined. The results obtained include the lift coefficient, the lift-to-drag coefficient ratio, the oscillations and oscillation amplitude of the models, and the flight range of the birds. After examining the results, it has been determined that the bird with the innovative Delta wing (in the shape of a delta) along with Sweep (backward or forward sweep angle) has better performance (volume increased by 10.67% and time and distance traveled with each refueling increased by 56%) in terms of lift coefficient and the lift-to-drag coefficient ratio. It has also been observed that the model with the delta wing also has the lowest oscillation rate in different flight conditions.
Keywords
Subjects