RU2494919C1 - Aircraft - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering. Aircraft comprises fuselage with wings secured thereto and furnished with deflectors of flow over top and bottom airfoils, tail unit, engine and undercarriage. Mesh plate arranged parallel with vertical plane extending along fuselage is attached to the end of every wing. Said mesh plate is shaped to trapezium and has openings increasing in size in direction from said top and bottom airfoils.

EFFECT: constricted vortex flow nearby wing end face.

2 cl, 3 dwg

Description

The invention relates to the field of aircraft modeling, mainly civil and transport aircraft.

Known aircraft containing the fuselage with wings attached to it, having elements of the deviation of the air flow around the upper and lower aerodynamic surfaces, at least one engine, tail, landing gear [1]. During the flight of the aircraft due to the pressure difference under the wing and above the wing, the air in the end part of the wing tends to go from bottom to top. In this case, vortices are formed, which are blown away by the oncoming air stream. Sliding off the wing, the swirls go back in the form of a long “swirl cord”.

The objective of the invention is to limit the formation at the end of the wing "vortex cord".

The technical result of the solution of the problem is achieved by the fact that in an aircraft containing a fuselage with wings attached to it, having elements of the deviation of the air flow around the upper and lower aerodynamic surfaces, tail unit, at least one engine, landing gear, to the end of each a wing is attached to a mesh plate located parallel to a vertical plane running along the fuselage. The mesh plate has the shape of a trapezoid and the size of the holes, increasing with distance from the upper and lower aerodynamic surfaces.

Figure 1 shows an aircraft with "vortex cords" at the end of the wings; figure 2 shows a mesh plate having the shape of a trapezoid, fixedly attached to the end part of the wing; figure 3 shows a mesh plate (a dashed line indicates the contour of the wing end) with a convex edge.

The aircraft (Fig. 1) contains a fuselage 1 with wings 2 attached to it, having elements 3 for deflecting the air flow around the upper 4 and lower 5 aerodynamic surfaces, at least one engine (jet, turboprop, rotor or other, not shown ), tail unit 6, chassis (not shown). The end part 7 of each wing (figure 2) is equipped with a rigid mesh plate 8 located parallel to the vertical plane Q, passing along the fuselage along its center (figure 1). The mesh plate is made of lightweight material resistant to atmospheric corrosion, has a trapezoid shape and hole size 9 for the passage of air, increasing with distance from the upper and lower aerodynamic surfaces. The mesh plate may have openings for the passage of air of the same size. The holes in the mesh plate may be round, square, oval or otherwise. The edges of the mesh plate are rounded around the perimeter. The edge of the mesh plate from the side of the upper aerodynamic surface may have the shape of a bulge (figure 3). The edges of the holes for the passage of air in the mesh plate (in the direction of movement of the air flow at the end of the wing from the bottom up) are rounded. For fastening (for example, with screws) to the frame in the end part of the wing, holes can be made in the mesh plate 10. For laying an electric cable, for example, to a signal light source (not shown) located at the end of the wing (not shown), the mesh plate can at least one process hole 11 must be made.

A model of an aircraft is made, comprising a fuselage 1 with wings 2 attached to it, having elements 3 of deflecting the air flow around the upper 4 and lower 5 aerodynamic surfaces, at least one engine (not shown), tail unit 6, landing gear (not shown ) To the frame of each wing in its end part 7 (Fig. 2), for example, screws are fastened to the mesh plate 8 using holes 10. Moreover, regardless of the size and location of the wings with respect to the fuselage, a mesh plate having the shape of a trapezoid is attached to the end part of the wing or directly to the end parallel to the plane Q (figure 1). In the presence of signal light sources located at the ends of the wings, an electric cable (not shown) is passed through the holes 11 (Fig. 3) in the mesh plate.

Under the flight conditions of the aircraft, the air flows arising at the end part of each wing tend to pass from bottom to top, however, they are scattered by a mesh plate into small streams, passing through numerous openings 10 of the same or different size. In this case, the resulting "vortex cord" is partially eroded, becomes unstable and quickly disintegrates.

In the implementation of preventive or repair work, the mesh plate is treated with a washing liquid.

The source of information

1. Polytechnical dictionary. Ch. ed. I.I. Artobolevsky. -M .: Soviet Encyclopedia, 1976.- P.243, 435.

Claims (2)

1. Aircraft containing a fuselage with wings attached to it, having elements of deviation of the air flow around the upper and lower aerodynamic surfaces, at least one engine, tail unit, landing gear, characterized in that a mesh plate is attached to the end part of each wing located parallel to a vertical plane running along the fuselage. 2. The aircraft according to claim 1, characterized in that the mesh plate has the shape of a trapezoid and the size of the holes, increasing with distance from the upper and lower aerodynamic surfaces.

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