Abstract: The deviation of the warhead of a projectile from its axis can modify the aerodynamic force to increase the range and mobility of the projectile. The flow fields of a projectile, with deflection angles within 0°~8°, angles of attack from 0° to 8°, and Mach numbers from 2 to 5 were simulated numerically first. Compared with the experimental data, the numerical simulation is proved to be reliable. Then the flight characteristics of the deflected nose projectile were investigated with the calculated aerodynamic coefficients. The ballistic trajectories of the projectile with different deflection angles were obtained, and the principle of increasing range and its mobility were discussed. Results show that the deflected nose projectile is dynamically stable at high angle of attack. Its lift-to-drag ratio is far larger than that of normal projectile, leading to a longer range and a superior mobility.