Influence of Low Speed and High Angle of Attack on Sting Support Interference

Abstract

Abstract In order to improve the quality of low-speed and high angle of attack test data and master the law of support interference, a numerical simulation study of support interference was carried out for a wind tunnel tensioning tail brace system. The results show that the impact of the beam of wire-assistant sting support on longitudinal aerodynamics characteristics of aircraft is small, and the “E” sting greatly affects longitudinal aerodynamics characteristics at a high angle of attack. The yawing moment coefficients decrease, and rolling moment coefficients increase at the angle of attack from 0°to 20° with the existence of wire-assistant sting support. With the increase of side slip angle, the interference becomes bigger, then becomes smaller, and 30°is the biggest.