travel of the roller bearing device 130 and the linearity of the relationship between the distance of travel and extension of the control surface 125 may be adjusted so as to tailor the action of the damping device 150 to various types of oscillations and changes in disposition that may be observed during an in flight refueling operation one skilled in the art will appreciate that various types of gearing devices 137 may be used to tune and or adjust the extension of the control surface 125 and the relation of the extension of the control surface 125 to the advance of the roller bearing device 130 along the elongate hose 114 in some embodiments the airfoil device 120 may operably engage the roller bearing device 130 in a variety of configurations so as to allow the control surface 125 of the airfoil 120 to deploy outwardly with respect to the elongate hose 114 as the roller bearing device 130 advances and or regresses along the length of the elongate hose 114 for instance as shown in fig2 the airfoil device 120 may hang below the elongate hose 114 from the roller bearing device 130 however in other embodiments the airfoil device 120 may ride above the elongate hose 114 or be operably engaged with a lateral side of the elongate hose 114 via the roller bearing device 130 so as to be capable of extending the control surface 125 with.