A rotor system for a rotor air vehicle, comprising an outer frame which constitutes the main body of the rotor system, in a structure suitable to accommodate moving and fixed components in its inner zone and allow the rotation of a propeller, and offers at least two mutual openings through which the air will enter the system and leave the system, - the propeller which is located inside the aforementioned outer frame and centrally connected to the ceiling of the outer frame in such a way that its front face will be pointing at the inner zone and function as a main rotor, and a motor to generate the required torque to run the said propeller, - hinged stabilizing flaps which are positioned against the front face of the said propeller and have planar plates extending in the radial direction towards the outer frame from a central hub facing the center of the propeller and fully or nearly perpendicular to the centerline of the propeller and meeting the torque requirements by which the said plates move around the axes parallel to the rotation plane of the propeller by adjusting their angles with respect to the rotation plane, - a motor to actuate the hinged stabilizing flaps, and - deflecting flaps which are located at the other side of the hinged stabilizing flaps, being constituted from planar plates fully or nearly perpendicular to the centerline of the propeller and provide the air vehicle to move forward, backward, right and left by rotating the aforementioned plates in the desired direction by means of motors, wherein the outer frame is characterized in comprising, - end rings which are circular or considerably circular and form a cylindrical inner zone on a large scale by positioning them fully or nearly parallel to each other in such a way that their centers are lined up on the same vertical axis; and - side support rods which are suitable to fix the positions of the end rings with respect to each other, line up around the end ring perimeter extending from one circle arc to another, connecting the end rings with each other and also forming a surface to install the components located inside the system. - the propeller which is located inside the aforementioned outer frame and centrally connected to the ceiling of the outer frame in such a way that its front face will be pointing at the inner zone and function as a main rotor, and a motor to generate the required torque to run the said propeller, - hinged stabilizing flaps which are positioned against the front face of the said propeller and have planar plates extending in the radial direction towards the outer frame from a central hub facing the center of the propeller and fully or nearly perpendicular to the centerline of the propeller and meeting the torque requirements by which the said plates move around the axes parallel to the rotation plane of the propeller by adjusting their angles with respect to the rotation plane, - a motor to actuate the hinged stabilizing flaps, and - deflecting flaps which are located at the other side of the hinged stabilizing flaps, being constituted from planar plates fully or nearly perpendicular to the centerline of the propeller and provide the air vehicle to move forward, backward, right and left by rotating the aforementioned plates in the desired direction by means of motors, wherein the outer frame is characterized in comprising, - end rings which are circular or considerably circular and form a cylindrical inner zone on a large scale by positioning them fully or nearly parallel to each other in such a way that their centers are lined up on the same vertical axis; and - side support rods which are suitable to fix the positions of the end rings with respect to each other, line up around the end ring perimeter extending from one circle arc to another, connecting the end rings with each other and also forming a surface to install the components located inside the system.