A method of generating energy from a discharge of an aircraft comprising the steps of: a) providing an air recovery generator assembly having a bladed wheel; and, b) positioning the air recovery generator behind the aircraft. The discharged air from the aircraft then turns the wheel thereby generating energy. In a preferred aspect of this invention the bladed wheel comprises a bladed cylinder wheel and the bladed cylindrical wheel additionally rotates a flywheel to store rotational energy therein. A mechanism is provided to move the bladed cylindrical wheel from a below ground storage position to an elevated operational position.