Volume 2 - Issue 2, March - April 2026

The aerodynamic characteristics of the Il-76 heavy transporter are evaluated in this paper, with a notable emphasis on longitudinal stability and balance across diverse flight levels. Through comprehensive calculations of the Il-76's static margin and requisite trim angles, the study identifies the critical relationship between flight speed and control surface response. A significant part of the discussion concentrates on the Il-76's sensitivity to transonic flow effects, where air compressibility triggers a shift in the aircraft's focal point. In conclusion, the present work demonstrates that the stability of the Il-76 undergoes non-linear transitions at higher Mach numbers, a phenomenon dictated by the specialized geometry of its lifting surfaces.

Vinh Long Mai, Van Quyen Dinh, Tat Dat Dong, Viet Tuan Luu,"Assessment of Longitudinal Static Stability and Trim Characteristics of the Il-76 Aircraft Throughout a Wide Range of Altitudes and Speeds" International Journal of Advanced Multidisciplinary Research and Educational Development, V2(2): Page(1066-1067) Mar-Apr 2026. ISSN: 3107-6513. www.ijamred.com. Published by Scientific and Academic Research Publishing.