Numerical method based on three dimension Navier-Stokes equations are applied to study the Aero-Stab(aerodynamically stabilized) seeker's misalignment angle of laser-guided bombs. A series of calculated misalignment angles varying with Ma and alpha were obtained, which are in good agreement with experimental data. The numerical results show that the misalignment angle is caused by the asymmetric aerodynamic disturbance of the bomb's forebody to the Aero-Stab seeker. The misalignment angle is relatively smaller than the angle of attack, and it is negative at small and medium angles of attack and positive at larger angles of attack.
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