A helicopter, comprising: a fuselage; a main rotor coupled to the fuselage and that in operation rotates in a first rotational direction with respect to the fuselage; an engine carried by the fuselage and drivingly coupled to rotate the main rotor in the first rotational direction with respect to the fuselage; a tail boom that extends rearwardly of the fuselage, the tail boom having an approaching side and a retreating side, the approaching side being a side of the tail boom that the main rotor approaches when rotating in the first rotational direction, the retreating side being a side of the tail boom that the main rotor retreats from when rotating in the first rotational direction, the retreating side being opposite the approaching side across a width of the tail boom, the approaching side of the tail boom having a varying radius of curvature about a centerline, the retreating side of the tail boom having a varying radius of curvature about the centerline of the tail boom, and the tail boom having an upper half, a lower a half and a horizontal plane that extends between the upper half and the lower half of the tail boom; a first strake that extends outwardly from the approaching side of the tail boom, the first strake positioned below the horizontal plane of the tail boom at a position that is from approximately 5 degrees to 15 degrees above a location on the approaching side below the horizontal plane at which a change in radius of curvature of the approaching side is greatest, the angle measured between said location, the centerline and an axis that extends from the centerline to the first strake; and at least one vortex generator that extends outwardly from the retreating side of the tail boom, the at least one vortex generator positioned below the horizontal plane of the tail boom at a position that is from approximately 5 degrees to 15 degrees above a location on the retreating side below the horizontal plane at which a change in radius of curvature of the retreating side is greatest, the angle measured between said location, the centerline and an axis that extends from the centerline to the at least one vortex generator. a fuselage; a main rotor coupled to the fuselage and that in operation rotates in a first rotational direction with respect to the fuselage; an engine carried by the fuselage and drivingly coupled to rotate the main rotor in the first rotational direction with respect to the fuselage; a tail boom that extends rearwardly of the fuselage, the tail boom having an approaching side and a retreating side, the approaching side being a side of the tail boom that the main rotor approaches when rotating in the first rotational direction, the retreating side being a side of the tail boom that the main rotor retreats from when rotating in the first rotational direction, the retreating side being opposite the approaching side across a width of the tail boom, the approaching side of the tail boom having a varying radius of curvature about a centerline, the retreating side of the tail boom having a varying radius of curvature about the centerline of the tail boom, and the tail boom having an upper half, a lower a half and a horizontal plane that extends between the upper half and the lower half of the tail boom; the tail boom having an approaching side and a retreating side, the approaching side being a side of the tail boom that the main rotor approaches when rotating in the first rotational direction, the retreating side being a side of the tail boom that the main rotor retreats from when rotating in the first rotational direction, the retreating side being opposite the approaching side across a width of the tail boom, the approaching side of the tail boom having a varying radius of curvature about a centerline, the retreating side of the tail boom having a varying radius of curvature about the centerline of the tail boom, and the tail boom having an upper half, a lower a half and a horizontal plane that extends between the upper half and the lower half of the tail boom; a first strake that extends outwardly from the approaching side of the tail boom, the first strake positioned below the horizontal plane of the tail boom at a position that is from approximately 5 degrees to 15 degrees above a location on the approaching side below the horizontal plane at which a change in radius of curvature of the approaching side is greatest, the angle measured between said location, the centerline and an axis that extends from the centerline to the first strake; and at least one vortex generator that extends outwardly from the retreating side of the tail boom, the at least one vortex generator positioned below the horizontal plane of the tail boom at a position that is from approximately 5 degrees to 15 degrees above a location on the retreating side below the horizontal plane at which a change in radius of curvature of the retreating side is greatest, the angle measured between said location, the centerline and an axis that extends from the centerline to the at least one vortex generator.