03.1 - Aerodynamics - CFD Methods and Validation
NUMERICAL STUDY OF VARIABLE CAMBER WING EFFECT ON AERODYNAMIC PERFORMANCE FOR LONG RANGE CIVIL AIRCRAFT
G. Qian¹, D. Wu¹, C. Ma¹; ¹COMAC, China
In order to increase the aerodynamic effectiveness of the long range wide body transport jet with the change of lift, mach number and altitude ,the technology of trailing edge variable camber wing which can change wing's shape by the deflection of flap ,aileron and spoiler depending on the flight condition has been applied to civil aircraft. Taking the wing of a representative long range wide body aircraft as a case study, the effects of variable camber of wing's aerodynamic performance and pressure distribution are investigated by the mean of CFD. Meanwhile, the drag coefficient and the lift-to-drag ratio with the variable of wing's chamber according to the different mach number and lift coefficient are analyzed. By applying surrogate model, the relationship between wing's camber and lift-to-drag ratio under the different flight condition are established. Finally, the fuel economy are built when applying wing variable camber in different flight range. The study shows that the optimization method can achieve best aerodynamic performance at given lift coefficient and mach number, result in aerodynamic performance improvement and fuel consuming decrease. It can make the aircraft fly in the fixed cruise altitude without stepped cruise.