The recoil force can be calculated by multiplying the muzzle velocity with the mass of the projectiles over one second (force = impulse per time). This gives an approximate recoil force of 30 kN. On the GAU-8/A product homepage the recoil force is stated as 10,000 pounds-force, or about 45 kN. The maximum combined output of the A-10 engines is 80 kN. Hence the recoil force of the gun is slightly more than half of the total thrust of the engines. While this is quite significant, it is not sufficient to stop the aircraft.