Aerodynamic fairing for reducing drag of structural openings

Abstract

The named fairing reduces the aerodynamic drag of structural openings, increases the flow rate of a vent in a moving body, reduces the accumulation of toxic fumes in a cavity on a moving body and reduces the noise generated by a cavity on a moving body. Reducing the drag of structural openings such as cowling exits, landing gear wells, control surface gaps and vents by placing fairings downstream and external to basic contour has not yet been done or marketed commercially. There have been many devices marketed that are located at the forward side of the openings. These devices protrude outside contour to deflect airflow over the opening. In doing so these devices produce low pressure which acts on the aft side of the device; the force developed because of this pressure points in the downstream direction, causing a drag penalty. None of the known devices reduce pressure without causing large amounts of drag. The above mentioned fairing produces low pressure but its resultant force points perpendicular to stream flow and hence produces very little adverse pressure drag. In this approach, the above mentioned fairing is unique.

Dependencies are inferred from the claim text.