초록 ▼

To enhance the flow of air into a flush-type, air inlet on the fuselage of an aircraft, a wing-like deflector is mounted on a pedestal attached to the aircraft and is positioned outwardly from the fuselage and forwardly of the inlet so as to deflect free stream air flowing past slower-moving boundar

To enhance the flow of air into a flush-type, air inlet on the fuselage of an aircraft, a wing-like deflector is mounted on a pedestal attached to the aircraft and is positioned outwardly from the fuselage and forwardly of the inlet so as to deflect free stream air flowing past slower-moving boundary layer air adjacent the fuselage, into the inlet. The deflector has an ogee shaped planform and is pitched at a predetermined angle of attack with respect to the direction of free stream flow to generate counterrotating flow vortices that trail the deflector and produce a strong downwash behind the deflector. The vortices entrain high energy air from the free stream and direct it down into the inlet. In one disclosed embodiment, the inlet is equipped with a door that swings between a closed position, flush with the exterior of the fuselage to block air flow from entering the inlet, and an open position, recessed within the inlet duct. The flow deflector is mounted on the door and is moveable therewith so that when the door is open, the deflector is oriented at the proper angle of attack for causing the downwash to flow into the open inlet, and so that when the door is closed, the deflector is generally parallel to the air flow to minimize drag. In another disclosed embodiment, the deflector is articulated independently of the inlet door to enable the angle of attack to be independently adjusted, and in still a further embodiment a downwardly angulated trailing edge flap is added to the ogee shaped deflector for augmenting the downwash.

대표청구항 ▼

In an air or water craft in which the body of the craft has a fluid inlet for ingesting some of the fluid through which the craft passes, said inlet being flush with respect to an exterior surface of the body of the craft, said craft being equipped with a door mounted for movement between a closed p

In an air or water craft in which the body of the craft has a fluid inlet for ingesting some of the fluid through which the craft passes, said inlet being flush with respect to an exterior surface of the body of the craft, said craft being equipped with a door mounted for movement between a closed position flush and the exterior surface of said body and an open position recessed inwardly from the exterior surface of said body to place said inlet in fluid communication with an inlet duct located interiorly of the craft body and associated with said inlet, the improvement in combination therewith comprising: a wing-airfoil deflector supportively mounted on said door and oriented such that when said door is in its open position said deflector is spaced outwardly from said body so as to be positioned at a predetermined angle of attack to a stream of fluid flowing relative to said body along said exterior surface so as to interact with said stream to produce counterrotating flow vortices trailing said deflector which coact to cause a downwash of the fluid from said stream into said inlet.