RU2448866C1 - Device for jointing aircraft wing to fuselage - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to aircraft engineering, namely, to jointing aircraft wing to high-wing fuselage. Proposed device comprises brackets jointed by angle braces and arranged on wing 5 and fuselage 10. Device is provided with two horizontal props 13, 14 arranged in the plane of wing front and rear spars 4 and 3, respectively. Horizontal prop 13 located in the plane of front frame 8 is jointed with bracket 15 of fuselage on one side, and, on opposite side, with wing bracket 17 attached to front spar 3. Horizontal prop 14 located in the plane of front frame 9 is jointed with bracket 16 of fuselage on one side, and, on opposite side, with wing bracket 18 attached to rear spar 4. Fuselage rear bracket 7 is connected by inclined tie rod 12 with wing front bracket 1. Note here that eccentric bolts with locking washers 20 are fitted in fuselage front and rear brackets 6 and 7. Adjusting washers 21 are fitted on bolts 19.

EFFECT: longer life of joint, ease of jointing.

5 dwg

Description

The present invention relates to the field of aircraft construction and can be used to connect the wing with the fuselage in the "high-wing" scheme.

A device is known for connecting a wing to the fuselage, for example, an A400 airplane (Airbus), comprising brackets on the wing and fuselage, bolted to each other by the “ear-fork” principle. However, such a device for connecting the wing to the fuselage requires increased accuracy in the manufacture of units, since at the slightest inaccuracy it is necessary to rivet the docking nodes or to make joint cutting of the ear-plug connection (see Flight magazine November 9-15, 2004).

There is also known a device for connecting a wing to the fuselage of an aircraft ATR-72 (see "Flight" magazine on September 3, 1988) containing brackets on the fuselage and brackets on the wing connected by struts. There is also an element in the form of a pin that contacts the fuselage bracket and the rear side member.

This device does not have sufficient survivability, since when one of the elements is destroyed, the operability of the entire device is lost.

The technical problem solved by the invention is to increase the “survivability” and the connection resource while reducing the complexity of the operation of docking the wing with the fuselage.

This problem is solved in that the device for connecting the wing with the fuselage of the aircraft, containing brackets connected to the struts mounted on the wing and the fuselage, is equipped with two horizontal braces located in the plane of the rear and front wing spar, one located in the plane of the front frame one side with the fuselage bracket and on the other with the wing bracket attached to the front side member, and the other horizontal brace, located in the plane of the rear frame, connect with the fuselage bracket and with the wing bracket attached to the rear spar, while the rear fuselage bracket is connected by an inclined link to the front wing bracket, and the eccentric bolts with fixing washers are installed in the front and rear fuselage brackets, and the adjusting washers are located on the eccentric axles.

The installation of adjusting elements helps to eliminate technological errors that may appear during the manufacture of the wing and fuselage.

The installation of two horizontal braces ensures the transfer of load along the wing, without restricting its deformation from the action of aerodynamic forces, which increases the connection resource.

The installation of struts transfers the vertical load from the wing to the fuselage.

Inclined thrusts transfer engine load along to the fuselage.

The invention is illustrated by drawings, where

figure 1 shows a side view of the fuselage and wing;

figure 2 is a section along aa of figure 1 along the rear spar;

figure 3 is a section along BB of figure 1 along the front spar;

figure 4 - section bb In figure 1;

figure 5 is a view of figure 4.

A device for connecting a wing to the fuselage of an aircraft (see FIGS. 1-5) comprises front and rear brackets 1, 2 connected to the front 3 and rear 4 wing spars 5, and front and rear brackets 6, 7 fastened to the front 8 and rear 9 power frames of the fuselage 10. Vertical struts 11 are attached to the bracket 6 and 7 of the fuselage on one side and to the brackets 1, 2 of the wing on the other side. The rear bracket 7 of the fuselage is connected by an inclined rod 12 with the front 1 bracket of the wing 5.

Two horizontal braces 13, 14 are located in the plane of the rear and front wing side members, respectively, and connect the fuselage brackets 15, 16 to the brackets 17, 18 located on the wing.

One horizontal brace 13, located in the plane of the front frame 8, connects the bracket 15 of the fuselage with the bracket 17 of the wing attached to the front side member. Another horizontal brace 14, located in the plane of the rear frame 9, connects the bracket 16 of the fuselage with the bracket 18 of the wing attached to the rear spar.

In the brackets 6, 7 of the fuselage, there are 6 eccentric bolts 19 with locking washers 20 and adjusting washers 21 mounted on the axes of the eccentric bolts. Similar washers are mounted on ordinary bolts in the wing brackets 1, 2.

The connection in the brackets 1, 2, 17, 18 of the wing and the fuselage with braces 13, 14 with struts 11 and rods 12 is made according to the “ear-fork” scheme. In the brackets 6, 7, 15, 16 of the fuselage they are connected by eccentric bolts 19 with the installation of adjusting washers 21, and in the brackets 1, 2, 17, 18 of the wing ordinary bolts are installed, also using adjusting washers 21.

Work.

The assembly receives a separately assembled wing 5 with mounted brackets 1, 2, 17, 18 and a separately assembled fuselage 10 with brackets 6, 7, 15, 16. The wing is connected to the fuselage by installing struts 11, inclined rods 12 and braces 13, 14 .

Adjustment with respect to the position and the necessary adjustment takes place by changing the lengths of the connecting elements, struts 11, braces 13, 14 and rods 12 by rotating the eccentric bolts 19 located on the brackets 6, 7, 15, 16 of the fuselage.

The relative movement of the wing with the fuselage along the fuselage is compensated by adjusting washers 21 mounted on the axes of the wing bolts and the fuselage.

The relative movement of the wing with the fuselage along the wing is carried out by adjusting washers 21 mounted on the brackets 1, 2 of the wing 5 and the fuselage 10, bolts 19 connecting the inclined rods 12.

Claims (1)

A device for connecting a wing to the fuselage of an aircraft, comprising brackets connected to the struts mounted on the wing and the fuselage, characterized in that it is provided with two horizontal braces located in the plane of the rear and front wing spar, one located in the plane of the front frame is connected on one side to the bracket the fuselage and the other with a wing bracket attached to the front side member, and another horizontal brace located in the plane of the rear frame is connected to the bracket fuselage and with a wing bracket attached to the rear spar, while the rear fuselage bracket is connected by an inclined link to the front wing bracket, with eccentric bolts with lock washers installed in the front and rear brackets of the fuselage, and the adjusting washers are located on the axles of the eccentric bolts.

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