Simulation and calculation of bending deformation of certain aircraft wing

CHEN Jia， YUAN Zhao-hui， LU Si-jia
（College of Automation，Northwestern Polytechnical University， Xi'an 710129， China）

Abstract： The normal work of cable transmission equipped in the flight control system of an aircraft will be affected during the flight of an aircraft. So it is sufficient by establishing the model of airfoil on the ground，and making it bend closely to the actual deformation. In order to solve the problem of airfoil model bending deformation closely to actual deformation，a simple model of airfoil which is aequilate，isopachous and prismatic cantilever was established. The equation sets of strength and deflection were derived. The effect of airfoil weight and steal cable operating force on the deflection of simulation wing was considered. The deflection state of simulation wing was closed to the actual deflection state when there were ten points acting on the cantilever. The coordinates of action point and the size of force were also calculated and obtained. Then the finite element of CATIA was analyzed. Comparing the deflection of simulation and the deflection of calculation，the result shows the rationality of calculation according to the small error of calculation desired points deformation and simulation result.
Key words： aircraft； bending deformation； airfoil simulation； equation sets of strength and deflection； simulation