Effects of canard sweep and canard-span wise blowing magnitude on lift increment

The effects of different canard's swept angles and jet momentum coefficients on the lift increment of simple close-coupled canard configurations with a 40-deg swept delta wing were investigated in a low-speed wind tunnel by force measurement. The experimental results show that at a certain range of attack angles (16-50 deg), on the condition of no blowing, with the increasing of the canard's swept angles, the lift increment and critical stall angles increase, which shows that the canard can be used as a controlling element for aerodynamic forces. On the condition of blowing, when the jet momentum coefficient exceeds a certain value, the more the jet momentum coefficient is, the more the lift increment is, which suggests that indirectly controlling the wing vortex is possible by canard-spanwise blowing for close-coupled canard configurations.