V-2 range control technique

With the relaxation of military restrictions, information now is available concerning much enemy equipment including the German-developed V-2 rocket which was employed in the bombardment of England. Range control of the V-2 was provided by an integrating accelerometer which, under proper conditions, can be made to give a measure of the velocity at any given instant. By presetting this device and controlling the angle of the missile with respect to zenith, reasonably accurate guidance can be accomplished.