Abstract:In response to the current limitations of variable-wing designs in cross-speed regimes, which often suffer from limited aerodynamic efficiency and compromised structural integrity, this work proposes a variable-configuration solution based on an oblique-swept wing configuration with autonomous takeoff and landing capabilities. Using numerical simulation methods, the aerodynamic characteristics of three distinct configurations of the aircraft were analyzed to investigate their performance across different speed ranges. The results demonstrate that the variable-wing design achieves maximum lift-to-drag ratios of 9.1, 5.6, and 1.6 in subsonic, transonic, and hypersonic regimes, respectively, enabling high aerodynamic efficiency across a broad speed spectrum. By integrating an upper oblique-swept wing layout with a waverider-like design, the aircraft leverages shockwave control and optimized pressure distribution during transonic and supersonic phases, simultaneously enhancing lift and reducing drag, leading to significant improvements in aerodynamic performance. This configuration allows the aircraft to efficiently transition between low- and high-speed conditions, thereby meeting diverse mission requirements.
