Abstract: Because the normal force of the canard surface of missile will decrease at high angle of attack， resulting in reduced maneuverability， in order to obtain high maneuverability and high maneuverability， an anti stabilizer is installed in front of the canard， resulting in favorable interference between the anti stabilizer and the canard rudder. A computational study for a fixed-canard dual-spin rocket projectile is described. On the basis of verifying the reliability of the numerical method，the aerodynamic characteristics of three states，i.e.，no canards，reverse-spinning canards correction fuse and non-spinning canards correction fuse，at supersonic speed are studied. The influence of canards correction fuse on the lateral force of overall projectile and its components is analyzed emphatically. The results show that the drag coefficient and normal force coefficient of the overall projectile increase，and the lateral force coefficient of projectile increases dramatically with the angle of attack after the installation of canards correction fuse.The lateral force produced by the projectile body is affected by the canards，which is the main component of the overall projectile's lateral force，and the canards correction fuse itself is the least. After the installation of the canards correction fuse，the interaction between wake vortex of the canards and the body vortex is the main reason for the increase in lateral force produced by the body and the tail fins.

Key words: doublecanardconfiguration, close-coupling, normalforce, numericalsimulation, aerodynamiccharacteristics