International Journal of Science, Engineering and TechnologyAuthors: Van Viet Vo
Abstract: This paper investigates the aerodynamic interference of the wing-horizontal tail combination on the Su-27 using ANSYS. Full-scale numerical simulations at a 10 km altitude reveal that interference occurs exclusively at negative angles of attack, depending on flight speed. Here, wing airflow alters the flow field over a portion of the horizontal tail, modifying the aircraft's lift, drag, and aerodynamic efficiency. This study resolves high-precision computation challenges by identifying the specific tail segment affected by the downwash angle, enabling accurate lift and drag coefficient calculations to reliably serve research and flight training.
DOI: http://doi.org/10.5281/zenodo.21413403
