A flap trailing edge structure, a wing and an aircraft

Abstract

The utility model discloses a kind of flap trailing edge structure, wing and aircraft, belong to aircraft manufacturing technical field, a kind of flap trailing edge structure includes flap box section, flap trailing edge, "J" type rear beam, flap box section includes flap box section upper wallboard and flap box section lower wallboard;Flap trailing edge includes trailing edge upper wallboard and trailing edge lower wallboard;"J" type rear beam includes first crossbeam, second crossbeam and the vertical beam for connecting first crossbeam and second crossbeam, second crossbeam and part of first crossbeam are inserted into the opening of flap box section, part of first crossbeam is connected with flap box section upper wallboard, another part of first crossbeam is inserted into the opening of flap trailing edge and trailing edge upper wallboard is connected.It reduces the number of parts, and then effectively reduces the flap structure weight, while reducing the workload and assembly difficulty of flap structure assembly, improve assembly accuracy, reduce structure manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the field of aircraft manufacturing technology, and in particular to a flap trailing edge structure, a wing, and an aircraft. Background Technology

[0002] In aircraft manufacturing, there are generally two ways to connect the flap box section to the flap trailing edge. The first is as follows: Figure 1 As shown, the two sets of connecting plates 100, set at the top and bottom, are respectively connected to the flap box section 200, the flap trailing edge 300, and the flap trailing edge auxiliary beam 500, and then connected to the rear beam 400 of the flap box section. The second method is as follows... Figure 2 As shown, the two sets of connecting plates 100', positioned vertically, are connected to the flap box section 200', the flap trailing edge 300', and the flap trailing edge auxiliary beam 500', respectively, and then connected to the flap box section rear beam 400' facing in another direction. Both of these structural forms have a large number of parts, resulting in significant weight. Furthermore, the installation clearances between the parts are difficult to match and coordinate during assembly, leading to a tendency for reverse step differences to appear on the upper surface of the flap. Additionally, as... Figure 2 As shown, the docking point has as many as four layers of structure, which requires extremely high precision in the manufacturing of parts and also brings great difficulty to the assembly. In addition, there are many assembly steps and difficulties in installation coordination. Utility Model Content

[0003] The purpose of this invention is to provide a flap trailing edge structure and wing that can reduce the number and weight of parts, avoid inverse step differences, and improve assembly efficiency.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A flap trailing edge structure includes: a flap box section, the flap box section including an upper wall panel and a lower wall panel, with an opening formed between the upper wall panel and the lower wall panel; a flap trailing edge, the flap trailing edge including an upper trailing edge panel and a lower trailing edge panel, with an opening formed between one end of the upper trailing edge panel and one end of the lower trailing edge panel, the opening of the flap box section and the opening of the flap trailing edge being directly opposite each other; and a "J"-shaped rear beam, the "J"-shaped rear beam including a first crossbeam, a second crossbeam, and a vertical beam for connecting the first crossbeam and the second crossbeam, the second crossbeam and part of the first crossbeam being inserted into the opening of the flap box section, part of the first crossbeam being connected to the upper wall panel of the flap box section, and another part of the first crossbeam being inserted into the opening of the flap trailing edge and connected to the upper wall panel of the trailing edge.

[0006] As an optional solution for the flap trailing edge structure provided by this utility model, the flap trailing edge structure also includes a connecting strip plate. One end of the connecting strip plate is connected between the second crossbeam and the lower wall panel of the flap box section, and the other end of the connecting strip plate is inserted into the opening of the flap trailing edge and connected to the flap trailing edge.

[0007] As an optional solution for the flap trailing edge structure provided by this utility model, the flap trailing edge structure also includes a "C"-shaped auxiliary beam. The "C"-shaped auxiliary beam is disposed inside the flap trailing edge and the opening of the "C"-shaped auxiliary beam faces the same direction as the opening of the flap trailing edge. One end of the "C"-shaped auxiliary beam is connected between the upper wall plate of the trailing edge and a portion of the opening of the first crossbeam inserted into the flap trailing edge. The other end of the "C"-shaped auxiliary beam is connected between the lower wall plate of the trailing edge and the other end of the opening of the connecting strip plate inserted into the flap trailing edge.

[0008] As an optional solution for the flap trailing edge structure provided by this utility model, the flap trailing edge structure also includes a full-height honeycomb structure. The other end of the upper trailing edge wall panel away from the flap box section and the other end of the lower trailing edge wall panel away from the flap box section are connected. The full-height honeycomb structure is set in the accommodating space formed by the upper trailing edge wall panel, the lower trailing edge wall panel and the "C"-shaped auxiliary beam.

[0009] As an optional solution for the flap trailing edge structure provided by this utility model, a bent section is provided at the end of the upper wall panel of the trailing edge away from the flap box section, and the bent section is connected to the lower wall panel of the trailing edge.

[0010] As an optional solution for the flap trailing edge structure provided by this utility model, the first crossbeam is provided with a number of grooves, and the upper wall plate of the trailing edge and the upper wall plate of the flap box section are provided with a number of protrusions corresponding to the grooves; and / or, the second crossbeam is provided with a number of grooves, and the end of the connecting strip plate connected between the second crossbeam and the lower wall plate of the flap box section is provided with a number of protrusions corresponding to the grooves, and the grooves can engage and limit the movement of the protrusions.

[0011] As an optional solution for the flap trailing edge structure provided by this utility model, multiple connecting strips are provided along the spanwise direction of the flap trailing edge.

[0012] As an optional solution for the flap trailing edge structure provided by this utility model, the upper wall panel of the flap box section and the first crossbeam, the lower wall panel of the flap box section and the connecting strip plate, and the connecting strip plate and the first crossbeam are all connected by countersunk fasteners.

[0013] Secondly, this utility model also provides a wing, including a wing box and a flap trailing edge structure disposed at the end of the wing box.

[0014] Thirdly, this utility model also provides an aircraft, including a fuselage and wings, with the wings connected to the fuselage.

[0015] The beneficial effects of this utility model are:

[0016] This utility model provides a flap trailing edge structure, comprising: a flap box section, a flap trailing edge, and a "J"-shaped rear beam. The flap box section includes an upper wall panel and a lower wall panel, with an opening formed between them. The flap trailing edge includes an upper trailing edge panel and a lower trailing edge panel, with an opening formed between one end of the upper and lower trailing edge panels. The openings of the flap box section and the flap trailing edge are aligned and connected. The "J"-shaped rear beam includes a first crossbeam, a second crossbeam, and a vertical beam for connecting the first and second crossbeams. The second crossbeam and a portion of the first crossbeam are inserted into the opening of the flap box section. A portion of the first crossbeam is connected to the upper wall panel of the flap box section, and another portion of the first crossbeam is inserted into the opening of the flap trailing edge and connected to the upper wall panel of the trailing edge. This design allows the flap box section and the flap trailing edge to be directly connected by a single component, the "J"-shaped rear beam. Compared to existing technologies, this eliminates the need for two sets of connecting plates, thus reducing the number of parts and avoiding the problem of mismatched installation gaps between parts during assembly. Controlled installation gaps further ensure the flatness of the flap surface, preventing the occurrence of reverse step differences. In addition, it effectively reduces the weight of the flap structure, while also reducing the workload and difficulty of flap assembly, improving assembly accuracy, and lowering structural manufacturing costs. Attached Figure Description

[0017] Figure 1 It is one of the existing structural forms for connecting the flap box section and the trailing edge;

[0018] Figure 2 It is one of the existing structural forms for connecting the flap box section and the trailing edge;

[0019] Figure 3 This is a structural side view of the flap trailing edge structure provided in a specific embodiment of this utility model;

[0020] Figure 4 This is an exploded schematic diagram of the flap trailing edge structure provided in a specific embodiment of this utility model;

[0021] Figure 5 This is a schematic diagram of the flap trailing edge structure provided in a specific embodiment of the present utility model;

[0022] Figure 6 This is a utility model Figure 5 An enlarged view of section A of the structural schematic diagram of the flap trailing edge structure provided in the specific implementation method.

[0023] In the picture:

[0024] 100. Connecting strip plate; 200. Flap box section; 300. Flap trailing edge; 400. Flap box section rear beam; 500. Flap trailing edge auxiliary beam; 600. Trailing edge honeycomb;

[0025] 100' Connecting strip plate; 200' Flare box section; 300' Flare trailing edge; 400' Flare box section rear beam; 500' Flare trailing edge auxiliary beam; 600' Trailing edge honeycomb;

[0026] 1. Flap box section; 2. Flap trailing edge; 3. "J" shaped rear beam; 4. Connecting strip plate; 5. "C" shaped auxiliary beam; 6. Full-height honeycomb tailing edge; 7. End cap rib;

[0027] 11. Upper wall panel of flap box section; 12. Lower wall panel of flap box section;

[0028] 21. Upper tail edge panel; 22. Lower tail edge panel; 211. Bending section;

[0029] 31. First horizontal beam; 32. Second horizontal beam; 33. Vertical beam;

[0030] 71. End sealing rib; 72. End sealing rib support. Detailed Implementation

[0031] To make the technical problems solved by this utility model, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0034] Currently, for aircraft flap structures, the connection between the flap box section and the flap trailing edge is usually achieved by overlapping the upper and lower connecting strips with the auxiliary beam edge strip of the flap trailing edge. At the same time, it is required that there is no reverse step difference between the upper surface of the flap box section and the upper surface of the flap trailing edge, so as to avoid affecting the aerodynamic shape of the flap and bringing additional aerodynamic drag to the aircraft.

[0035] The traditional connection between the flap box section and the trailing edge has the following two structural forms: Figure 1 , Figure 2 The structure shown is as follows.

[0036] like Figure 1 As shown, the first connection method involves a C-shaped structure with the flap box section rear beam 400 facing forward. The installation sequence is as follows: 1) The upper and lower wall panels of the flap box section 200, the flap box section rear beam 400, and the two upper and lower connecting strip plates 100 are first assembled into an integral box section structure; 2) The upper and lower wall panels of the flap trailing edge 300, the flap trailing edge auxiliary beam 500, and the trailing edge honeycomb 600 are co-cured into an integral trailing edge structure; 3) The two upper and lower connecting strip plates 100 are inserted into the opening of the C-shaped flap trailing edge auxiliary beam 500 and assembled. This structural form has a large number of parts, resulting in a large weight. Furthermore, the installation gaps between the parts are difficult to match and coordinate during assembly, and the upper surface of the flap is prone to reverse step discrepancies.

[0037] like Figure 2 As shown, the second connection method uses a C-shaped structure with the flap box section rear beam 400' facing rearward. The installation sequence is as follows: 1) The upper and lower wall panels of the flap box section 200', the flap box section rear beam 400', and the two upper and lower connecting strips 100' are first assembled into an integral box section structure; 2) The upper and lower wall panels of the flap trailing edge 300', the flap trailing edge auxiliary beam 500', and the trailing edge honeycomb 600' are cured together into an integral trailing edge structure; 3) The two upper and lower connecting strips 100' and the flap box section rear beam 400' are inserted together into the opening of the C-shaped flap trailing edge auxiliary beam 500' and assembled and connected by one side. In addition to having the same disadvantages as the above-mentioned flap trailing edge connection structure (many parts, heavy weight, and difficulty in coordinating installation gaps), this structure has as many as four layers of mechanical connection at the joint of the connecting strips 100 / 100' and the flap trailing edge, which requires extremely high manufacturing precision and also brings great difficulty to the assembly.

[0038] To avoid the problems of numerous parts, heavy weight, high manufacturing precision requirements, many assembly steps, and difficult installation coordination in traditional flap trailing edge connection structures, this utility model provides a new flap trailing edge structure. This structure can reduce the number of parts, effectively reduce the weight of the flap structure, reduce the workload and difficulty of flap structure assembly, improve assembly precision, and reduce structural manufacturing costs.

[0039] Specifically, such as Figures 3 to 6 As shown, a flap trailing edge structure includes a flap box section 1, a flap trailing edge 2, and a "J"-shaped rear beam 3. The flap box section 1 includes an upper flap box section 11 and a lower flap box section 12, with an opening formed between the upper flap box section 11 and the lower flap box section 12. The flap trailing edge 2 includes an upper trailing edge section 21 and a lower trailing edge section 22, with an opening formed between one end of the upper trailing edge section 21 and one end of the lower trailing edge section 22. The openings of the flap box section 1 and the flap trailing edge 2 are directly opposite each other. The "J"-shaped rear beam 3 includes a first crossbeam 31, a second crossbeam 32, and a vertical beam 33 for connecting the first crossbeam 31 and the second crossbeam 32. The second crossbeam 32 and part of the first crossbeam 31 are inserted into the opening of the flap box section 1. Another part of the first crossbeam 31 is inserted into the opening of the flap trailing edge 2 for connection with the flap trailing edge 2. Part of the first crossbeam 31 is connected to the upper wall panel 11 of the flap box section, and another part of the first crossbeam 31 is inserted into the opening of the flap trailing edge 2 and connected to the upper wall panel 21 of the trailing edge.

[0040] It is understood that a flap trailing edge structure includes a flap box section 1, a flap trailing edge 2, and a "J"-shaped rear beam 3. The flap box section 1 and the flap trailing edge 2 are connected at their respective openings by the "J"-shaped rear beam 3. Specifically, the flap box section 1 includes an upper flap box section 11 and a lower flap box section 12, and an opening is formed between the upper flap box section 11 and the lower flap box section 12. At the same time, because the flap trailing edge 2 includes a trailing edge upper wall plate 21 and a trailing edge lower wall plate... 22. An opening is formed between one end of the upper tail edge panel 21 and one end of the lower tail edge panel 22, such that the opening of the flap box section 1 and the opening of the flap tail edge 2 are directly opposite each other. Based on this, a "J"-shaped rear beam 3 is provided, and the "J"-shaped rear beam 3 includes a first crossbeam 31, a second crossbeam 32, and a vertical beam 33 for connecting the first crossbeam 31 and the second crossbeam 32. It should be noted that the "J"-shaped rear beam 3 has a "J"-shaped structure, and one end of the "J"-shaped structure can be understood as "extending to both sides". Figure 3 For example, this end refers to the upper end of the "J"-shaped rear beam 3, which has extension structures on both sides. In other words, this end corresponds to the first crossbeam 31, while the other end can be understood as "extending only to one side". Figure 3For example, this end refers to the lower end of the "J"-shaped rear beam 3, which corresponds to the second crossbeam 32. The first crossbeam 31 and the second crossbeam 32 are connected by a vertical beam 33. This allows the second crossbeam 32 and part of the first crossbeam 31 to be inserted into the opening of the flap box section 1. At this time, another part of the first crossbeam 31 is inserted into the opening of the flap trailing edge 2 for connection with the flap trailing edge 2. That is to say, part of the first crossbeam 31 is connected to the upper wall plate 11 of the flap box section, and the other part of the first crossbeam 31 is inserted into the opening of the flap trailing edge 2 and connected to the upper wall plate 21 of the trailing edge. In other words, the connection between the flap box section 1 and the flap trailing edge 2 is achieved through a single structure ("J"-shaped rear beam 3), thereby reducing the number of parts, effectively reducing the weight of the flap structure, reducing the workload and assembly difficulty of the flap structure assembly, improving assembly accuracy, and reducing the structural manufacturing cost.

[0041] It should be noted that the connection between the vertical beam 33 used to connect the first crossbeam 31 and the second crossbeam 32 and the first crossbeam 31 and the second crossbeam 32 can be by welding, integrated connection, etc. In this embodiment, integrated connection is preferred. The integrated connection between the vertical beam 33 and the first crossbeam 31 and the second crossbeam 32 can reduce the number of assembly parts, thereby effectively reducing the weight of the aircraft flap tail edge structure, improving the structural load-bearing efficiency, reducing the workload of slat part forming and structural assembly, giving full play to the advantages of the overall composite structure, reducing the assembly difficulty, and effectively reducing the structural manufacturing cost.

[0042] Alternatively, in this embodiment, such as Figures 3 to 6 As shown, the flap trailing edge structure also includes a connecting strip plate 4. One end of the connecting strip plate 4 is connected between the second crossbeam 32 and the lower wall plate 12 of the flap box section, and the other end of the connecting strip plate 4 is inserted into the opening of the flap trailing edge 2 and connected to the flap trailing edge 2.

[0043] Understandably, the flap trailing edge structure also includes a connecting plate 4. One end of the connecting plate 4 is connected between the second crossbeam 32 and the lower wall panel 12 of the flap box section, so that the lower wall panel 12 of the flap box section 1 and the second crossbeam 32 of the "J"-shaped rear beam 3 are both connected by the connecting plate 4. Then, the other end of the connecting plate 4 is inserted into the opening of the flap trailing edge 2 and connected to the flap trailing edge 2, so that the flap trailing edge 2 is connected, thereby connecting the flap box section 1, the flap trailing edge 2, the "J"-shaped rear beam 3 and the connecting plate 4.

[0044] Alternatively, in this embodiment, such as Figures 3 to 6As shown, the flap trailing edge structure also includes a "C"-shaped auxiliary beam 5. The "C"-shaped auxiliary beam 5 is disposed inside the flap trailing edge 2 and the opening of the "C"-shaped auxiliary beam 5 is aligned with the opening of the flap trailing edge 2. One end of the "C"-shaped auxiliary beam 5 is connected between the upper trailing edge wall plate 21 and a portion of the first crossbeam 31 inserted into the opening of the flap trailing edge 2. The other end of the "C"-shaped auxiliary beam 5 is connected between the lower trailing edge wall plate 22 and the other end of the connecting strip plate 4 inserted into the opening of the flap trailing edge 2.

[0045] Understandably, the flap trailing edge structure also includes a "C"-shaped auxiliary beam 5. The "C"-shaped auxiliary beam 5 has a "C"-shaped structure and is located inside the flap trailing edge 2, with the opening of the "C"-shaped auxiliary beam 5 facing the same direction as the opening of the flap trailing edge 2. Figure 3 For example, this is to ensure that the upper and lower sections of the "C"-shaped auxiliary beam 5, which has a "C"-shaped structure, can respectively abut against the upper tail wall plate 21 and the lower tail wall plate 22, and then connect and install them. On this basis, one end of the "C"-shaped auxiliary beam 5 (with Figure 3 For example, the upper section) connects to the opening between the upper tail edge panel 21 and the first crossbeam 31 inserted into the tail edge 2 of the flap, and the other end of the "C"-shaped auxiliary beam 5 (with Figure 3 For example, the lower section is connected between the lower tail edge wall plate 22 and the other end of the connecting strip plate 4 inserted into the flap tail edge 2, so that the connecting strip plate 4, the lower tail edge wall plate 22, the "C"-shaped auxiliary beam 5, the first crossbeam 31, and the upper tail edge wall plate 21 are connected. Thus, while ensuring the connection effect of the flap tail edge structure, it also takes into account the support effect for the tail edge. It can be understood that the "J"-shaped rear beam 3 in this embodiment combines the function of the "C"-shaped auxiliary beam 5 and the upper connecting strip plate in conventional technology. It not only serves as the support for the tail of the box section, but also serves as the connection between the box section and the tail edge. At the same time, in terms of load transmission, compared with the tail edge load being transmitted only through the fasteners and connecting strip plate parts, the tail edge load is transmitted through the fasteners and the J-shaped rear beam, which is more reliable.

[0046] It should be noted that because the other end of the connecting plate 4 is inserted into the opening of the flap trailing edge 2 and connected to the flap trailing edge 2, while the other end of the "C"-shaped auxiliary beam 5 is connected between the lower tail edge wall plate 22 and the other end of the connecting plate 4 inserted into the opening of the flap trailing edge 2, the other end of the connecting plate 4 (with) Figure 3 For example, the right side of the connecting plate 4) is actually relative to one end of the connecting plate 4 (taking Figure 3For example, the left end of the connecting strip plate 4 needs to be bent, meaning there is a transition structure between one end and the other end of the connecting strip plate 4. In this embodiment, it is preferred that there is an arc-shaped transition structure between one end and the other end of the connecting strip plate 4. This ensures that one end of the connecting strip plate 4 connects to the second crossbeam 32 and the lower wall plate 12 of the flap box section, while also accommodating the connection of the other end of the connecting strip plate 4 to the "C"-shaped auxiliary beam 5. This avoids a height difference between the surface of the lower wall plate 12 of the flap box section and the lower wall plate 22 of the trailing edge, improves the aerodynamic shape quality of the trailing edge structure of the lower flap, ensures the structural rationality and performance of the trailing edge structure of the flap, and at the same time, the arc-shaped transition structure also ensures the overlapping effect of the internal structure.

[0047] Alternatively, in this embodiment, such as Figures 3 to 6 As shown, the trailing edge structure also includes a full-height trailing edge honeycomb 6. The other end of the upper trailing edge panel 21 away from the flap box section 1 and the other end of the lower trailing edge panel 22 away from the flap box section 1 are connected. The full-height trailing edge honeycomb 6 is set in the accommodating space formed by the upper trailing edge panel 21, the lower trailing edge panel 22 and the "C"-shaped auxiliary beam 5.

[0048] Understandably, the flap trailing edge structure also includes a full-height honeycomb 6. Since the other end of the upper trailing edge panel 21 away from the flap box section 1 and the other end of the lower trailing edge panel 22 away from the flap box section 1 are connected, the upper trailing edge panel 21, the lower trailing edge panel 22 and the "C"-shaped auxiliary beam 5 form a receiving space, which in turn accommodates the full-height honeycomb 6 in the receiving space, ensuring the normal installation of the full-height honeycomb 6 in the flap trailing edge structure.

[0049] It should be noted that full-height honeycomb is a special type of honeycomb structure material, typically composed of two thinner panels and a thicker honeycomb core. This structure is also known as a honeycomb sandwich structure. Due to its unique geometry, the honeycomb structure can provide high strength while maintaining lightweight, thus finding wide application in various fields. Furthermore, the honeycomb structure within full-height honeycomb materials results in high strength while maintaining relatively light weight, good stability, resistance to deformation, and high flatness. Additionally, it possesses excellent physical properties: full-height honeycomb materials offer good thermal insulation, sound absorption, and can effectively reduce noise pollution. It also has diverse applications: besides its use in the construction field, such as wall decoration and flooring, full-height honeycomb materials are widely used in aerospace, high-end automobiles, and precision instruments. For example, in the aerospace field, full-height honeycomb materials are used to manufacture components such as the horizontal tail section of aircraft to reduce weight and improve structural strength. In this embodiment, by setting a full-height honeycomb 6 at the trailing edge, it possesses characteristics such as lightweight, high bending strength and stiffness, excellent anti-instability capability, fatigue aging resistance, and superior sound absorption, sound insulation, and heat insulation performance. It is applied to the flap trailing edge structure. The specific types of the full-height honeycomb 6 at the trailing edge are all existing technologies, such as aramid paper honeycomb, aluminum honeycomb, and glass cloth honeycomb. The specific selection of the material system is adapted to environmental adaptability and structural requirements. This utility model does not limit the specific types. In this embodiment, the upper trailing edge wall plate 21, the lower trailing edge wall plate 22, and the "C"-shaped auxiliary beam 5 are used to form an accommodating space to accommodate the full-height honeycomb 6 at the trailing edge, which significantly improves the internal structural rationality of the flap trailing edge structure, while also possessing the effects of lightweight, sound insulation, heat insulation, anti-instability, and fatigue aging resistance.

[0050] Alternatively, in this embodiment, such as Figures 3 to 6 As shown, the widths of the flap box section 1, flap trailing edge 2, "J"-shaped rear beam 3, and connecting strip plate 4 are consistent along the span direction of the flap trailing edge structure.

[0051] Understandably, in the spanwise direction of the flap trailing edge structure, the widths of the flap box section 1, flap trailing edge 2, "J"-shaped rear beam 3, and connecting strip plate 4 are consistent, ensuring that the flap trailing edge structure has a regular shape and does not have any uneven structure, further ensuring the structural rationality of the flap trailing edge structure.

[0052] Alternatively, in this embodiment, such as Figures 3 to 6 As shown, the flap trailing edge 2, the "C"-shaped auxiliary beam 5, and the full-height honeycomb 6 of the trailing edge are connected using a co-curing process.

[0053] It is understandable that the flap trailing edge 2, the "C"-shaped auxiliary beam 5, and the full-height honeycomb 6 of the trailing edge are all connected using a co-curing process. That is, the upper trailing edge panel 21, the lower trailing edge panel 22, the "C"-shaped auxiliary beam 5, and the full-height honeycomb 6 of the trailing edge are all connected using a co-curing process. More specifically, the co-curing process completes the curing and connection of multiple prepreg parts (i.e., the upper trailing edge panel 21, the lower trailing edge panel 22, the "C"-shaped auxiliary beam 5, and the full-height honeycomb 6 of the trailing edge) in the same curing cycle in a composite material manufacturing process. This reduces the number of conventional fasteners and connectors, thereby effectively reducing the structural weight. Furthermore, the co-curing process can eliminate weak points at the adhesive interface, thereby improving the mechanical properties of the flap trailing edge structure. In addition, the co-curing process allows multiple parts to be formed in one step, thereby improving manufacturing efficiency, reducing manufacturing costs, and the co-curing process has a high degree of overall standardization, making it suitable for large and complex structures.

[0054] Alternatively, in this embodiment, such as Figure 4 , Figure 5 As shown, a bent section 211 is provided at the end of the upper trailing edge panel 21 away from the flap box section 1, and the bent section 211 is connected to the lower trailing edge panel 22.

[0055] It is understood that a bent section 211 is provided at the end of the upper trailing edge panel 21 away from the flap box section 1. The bent section 211 bends toward the lower trailing edge panel 22. In this embodiment, the bent section 211 is preferably integrally formed with the upper trailing edge panel 21, and then the bent section 211 is connected to the lower trailing edge panel 22. The setting of the bent section 211 ensures that the end of the flap trailing edge 2 (i.e. the end where the bent section 211 is connected to the lower trailing edge panel 22) is not a structure of multiple parts connected together. This avoids situations such as gaps, inconsistent height differences, etc., or situations where the installation gaps between the upper trailing edge panel 21 and the lower trailing edge panel 22 are difficult to match and coordinate during assembly. This avoids the existence of reverse step difference, so as to avoid affecting the aerodynamic shape of the flap and bringing additional aerodynamic drag to the aircraft.

[0056] Alternatively, in this embodiment, such as Figure 4 As shown, the first crossbeam 31 is provided with several grooves, the upper wall plate 21 of the tail edge and the upper wall plate 11 of the flap box section are provided with several protrusions corresponding to the grooves; and / or, the second crossbeam 32 is provided with several grooves, and the end of the connecting strip plate 4 connected between the second crossbeam 32 and the lower wall plate 12 of the flap box section is provided with several protrusions corresponding to the grooves, and the grooves can engage and limit the movement of the protrusions.

[0057] It is understandable that the first crossbeam 31 is provided with several grooves, while the upper wall plate 21 of the tail edge and the upper wall plate 11 of the flap box section are provided with several protrusions corresponding to the grooves, so as to... Figure 4For example, the upper surface of the first crossbeam 31 is provided with several grooves, while the lower surfaces of the trailing edge upper wall plate 21 and the flap box section upper wall plate 11 are provided with several protrusions corresponding to the grooves. This arrangement allows the grooves to engage with the protrusions during actual installation, thereby enabling the grooves of the first crossbeam 31 to engage with the protrusions corresponding to the grooves on the trailing edge upper wall plate 21 and the flap box section upper wall plate 11. This improves the ease of assembly when the flap box section upper wall plate 11 and the trailing edge upper wall plate 21 engage with the first crossbeam 31 ("J"-shaped rear beam 3). Simultaneously, the engagement of the protrusions and grooves prevents mutual misalignment, ensuring a stable structure for subsequent installation steps. Furthermore, the protrusions on the trailing edge upper wall plate 21 and the flap box section upper wall plate 11 also allow them to function as reinforcing ribs. To ensure the structural strength of the upper wall panel 21 of the trailing edge and the upper wall panel 11 of the flap box section, thereby ensuring the performance of the flap trailing edge structure; similarly, and / or, the second crossbeam 32 is provided with several grooves, and the end of the connecting strip plate 4 connected between the second crossbeam 32 and the lower wall panel 12 of the flap box section is provided with several protrusions corresponding to the grooves. This can also improve the convenience of the connecting strip plate 4 being inserted into the first crossbeam 31 ("J"-shaped rear beam 3). At the same time, after the protrusions and grooves are inserted, they can also prevent the mutual displacement, providing a stable structural guarantee for subsequent installation steps. In addition, the end of the connecting strip plate 4 connected between the second crossbeam 32 and the lower wall panel 12 of the flap box section is provided with several protrusions corresponding to the grooves, so that the connecting strip plate 4 can also use the protrusion structure to act as a reinforcing rib, thereby ensuring the structural strength of the connecting strip plate 4 itself, and thus ensuring the performance of the flap trailing edge structure.

[0058] Alternatively, in this embodiment, such as Figure 4 As shown, multiple connecting plates 4 are provided along the spanwise direction of the flap trailing edge structure.

[0059] It is understandable that multiple connecting plates 4 are arranged along the spanwise direction of the flap trailing edge structure, which means that the connecting plates 4 are actually segmented into multiple segments. That is, the connecting plates 4 are arranged in a segmented manner. The segmentation of the plates can reduce the volume of a single connecting plate 4, further reduce the process difficulty, and save manufacturing costs. At the same time, the arrangement of multiple connecting plates 4 along the spanwise direction of the flap trailing edge structure makes it more convenient to perform operations such as disassembly and replacement.

[0060] It should be noted that the specific number of connecting plates 4 arranged along the spanwise direction of the flap trailing edge structure can be adjusted according to actual needs. Figure 4Taking two as an example, and regardless of whether there is one or more connecting plates 4, when the second crossbeam 32 is provided with several grooves, and the end of the connecting plate 4 connected between the second crossbeam 32 and the lower wall plate 12 of the flap box section is provided with several protrusions corresponding to the grooves, the protrusion structures on each connecting plate 4 are connected end to end to each other. This setting can ensure the convenience of processing and the compatibility between each connecting plate 4, thereby ensuring the structural strength of the connecting plate 4 itself and the performance of the flap trailing edge structure.

[0061] Alternatively, in this embodiment, such as Figure 4 , Figure 5 , Figure 6 As shown, the upper wall panel 11 of the flap box section is connected to the first crossbeam 31, the lower wall panel 12 of the flap box section is connected to the connecting strip plate 4, and the connecting strip plate 4 is connected to the first crossbeam 31 by countersunk fasteners.

[0062] It is understandable that the upper wall panel 11 of the flap box section and the first crossbeam 31, the lower wall panel 12 of the flap box section and the connecting strip plate 4, and the connecting strip plate 4 and the first crossbeam 31 are all connected by countersunk fasteners. This is because the flap trailing edge structure needs to keep the aerodynamic surface of the parts smooth. Using countersunk fasteners can avoid protrusions on the surface of the parts, thereby avoiding the installation structure from affecting the aerodynamic shape. It should be noted that in the countersunk fastener connection, it is necessary to first countersunk at the fastener mounting hole of the part, and then install and connect the countersunk fastener.

[0063] Alternatively, in this embodiment, such as Figure 4 , Figure 5 , Figure 6 As shown, the flap trailing edge structure also includes end capping ribs 7 located at both ends of the flap trailing edge 2 in the spanwise direction. The shape of the end capping ribs 7 is consistent with the shape of both ends of the accommodating space in the spanwise direction.

[0064] It is understandable that the end-sealing ribs 7 located at both ends of the flap trailing edge 2 in the spanwise direction are set at both ends of the flap trailing edge 2. The end-sealing ribs 7 are used to seal the two ends of the flap trailing edge 2 in the spanwise direction. The shape of the end-sealing ribs 7 is consistent with the shape of the two ends of the accommodating space in the spanwise direction, so that the full height honeycomb 6 of the trailing edge is fixed in the accommodating space formed by the upper wall plate 21 of the trailing edge, the lower wall plate 22 of the trailing edge and the “C”-shaped auxiliary beam 5, and the two ends of the spanwise direction are also sealed by the end-sealing ribs 7, thereby ensuring the structural stability of the flap trailing edge structure.

[0065] Optionally, the flap trailing edge 2, the "C"-shaped auxiliary beam 5, the full-height honeycomb of the trailing edge 6, and the end cap rib 7 are all connected using a co-curing process.

[0066] It is understandable that the upper tail edge panel 21, lower tail edge panel 22, "C"-shaped auxiliary beam 5, full-height tail edge honeycomb 6, and end-sealing rib 7 are all connected using a co-curing process. More specifically, the co-curing process completes the curing and connection of multiple prepreg parts (i.e., upper tail edge panel 21, lower tail edge panel 22, "C"-shaped auxiliary beam 5, full-height tail edge honeycomb 6, and end-sealing rib 7) in the same curing cycle in a composite material manufacturing process. This reduces the number of conventional fasteners and connectors, thereby effectively reducing the structural weight. Furthermore, the co-curing process can eliminate weak points at the adhesive interface, thereby improving the mechanical properties of the flap tail edge structure. In addition, the co-curing process allows multiple parts to be formed in one step, thereby improving manufacturing efficiency, reducing manufacturing costs, and the co-curing process has a high degree of overall standardization, making it suitable for large and complex structures.

[0067] Alternatively, in this embodiment, such as Figure 4 , Figure 5 , Figure 6 As shown, the end-sealing rib 7 includes an end-sealing rib plate 71, which is used to seal the spanwise ends of the receiving space of the flap trailing edge 2.

[0068] Alternatively, in this embodiment, such as Figure 4 , Figure 5 , Figure 6 As shown, the end capping rib 7 also includes an end capping rib support 72, which is vertically disposed at one end of the end capping rib plate 71 facing the upper wall plate 21 of the tail edge, and / or, the end capping rib support 72 is vertically disposed at the other end of the end capping rib plate 71 facing the lower wall plate 22 of the tail edge.

[0069] It is understood that the end-sealing rib 7 includes an end-sealing rib support 72, which is vertically disposed at one end of the end-sealing rib plate 71 facing the upper wall plate 21 of the trailing edge. In this case, there is only one end-sealing rib support 72 vertically located at one end of the end-sealing rib plate 71; or, the end-sealing rib support 72 is vertically disposed at the other end of the end-sealing rib plate 71 facing the lower wall plate 22 of the trailing edge. In this case, there is still only one end-sealing rib support 72 vertically located at the other end of the end-sealing rib plate 71. That is to say, there is only one end-sealing rib support 72, which can be adaptively connected to the upper wall plate of the trailing edge. 21 or trailing edge lower wall plate 22, the end capping rib bracket 72 is vertically arranged on the end capping rib plate 71, so that while the end capping rib plate 71 blocks the spanwise ends of the trailing edge 2 of the flap, the end capping rib bracket 72 perpendicular to the end capping rib plate 71 can be better fitted and connected to the trailing edge upper wall plate 21 or trailing edge lower wall plate 22; in addition, two end capping rib brackets 72 can be arranged, so that the two end capping rib brackets 72 are located at the two ends of the end capping rib plate 71 facing the trailing edge upper wall plate 21 and the trailing edge lower wall plate 22 respectively, that is, they are simultaneously fitted and connected to the trailing edge upper wall plate 21 or trailing edge lower wall plate 22.

[0070] Alternatively, in this embodiment, such as Figure 4 , Figure 5 , Figure 6 As shown, the end of the sealing rib bracket 72 facing the flap box section 1 is provided with an extension section, which is inserted between the upper wall plate 21 of the tail edge and the first crossbeam 31, and / or, the extension section is inserted between the connecting strip plate 4 and the lower wall plate 22 of the tail edge.

[0071] Understandably, when there is only one end-sealing rib support 72, the extension of the end-sealing rib support 72 facing the flap box section 1 can be selectively inserted between the upper tail edge plate 21 and the first crossbeam 31, or between the connecting strip plate 4 and the lower tail edge plate 22. When there are two end-sealing rib supports 72 located at the two ends of the end-sealing rib plate 71 facing the upper tail edge plate 21 and the lower tail edge plate 22 respectively, the extensions of the two end-sealing rib supports 72 are simultaneously inserted between the upper tail edge plate 21 and the first crossbeam 31, and between the connecting strip plate 4 and the lower tail edge plate 22, further improving the connection strength of the end-sealing rib 7.

[0072] Alternatively, in this embodiment, such as Figure 5 , Figure 6 As shown, along the spanwise direction of the flap trailing edge structure, the width of the "C"-shaped auxiliary beam 5 is smaller than the width of the flap box section 1, the flap trailing edge 2, the "J"-shaped rear beam 3, and the connecting strip plate 4.

[0073] Understandably, along the spanwise direction of the flap trailing edge structure, the width of the "C"-shaped auxiliary beam 5 is smaller than the width of the flap box section 1, the flap trailing edge 2, the "J"-shaped rear beam 3, and the connecting strip plate 4. This ensures that both ends of the "C"-shaped auxiliary beam 5 along the spanwise direction of the flap trailing edge structure have clearance space. This allows the extension of the end-sealing rib bracket 72 to be inserted between the upper wall plate 21 of the trailing edge and the first crossbeam 31, and / or, the extension of the end-sealing rib bracket 72 to be inserted between the connecting strip plate 4 and the lower wall plate 22 of the trailing edge. The above arrangement ensures that the "C"-shaped auxiliary beam 5 and the end-sealing rib 7 can be stably inserted and installed, thereby ensuring the stability of the interlocking and connection between the various internal structures, while also improving the utilization efficiency of the internal space.

[0074] As an option, such as Figures 3 to 6 As shown, this embodiment also includes a method for installing a flap trailing edge structure, specifically comprising the following steps:

[0075] S1, connect the upper wall panel 11 of the flap box section to the overlapping part of the first crossbeam 31 with countersunk fasteners, and at the same time connect the lower wall panel 12 of the flap box section to the overlapping part of the second crossbeam 32 and the connecting strip plate 4 with countersunk fasteners to form a flap box section assembly.

[0076] S2, the "C"-shaped auxiliary beam 5, the upper tail edge wall plate 21, the lower tail edge wall plate 22, and the full-height tail edge honeycomb 6 are co-cured to form a flap tail edge assembly;

[0077] S3, the flap box section 1 is inserted into the opening of the flap trailing edge 2 to form an overlap. The upper overlap (first crossbeam 31, "C"-shaped auxiliary beam 5, trailing edge upper wall plate 21) and the lower overlap (connecting strip plate 4, "C"-shaped auxiliary beam 5, trailing edge lower wall plate 22) are mechanically connected by single-sided fasteners to complete the final assembly.

[0078] In step S1, countersunk holes are first made at the corresponding fastener mounting holes of the parts; then countersunk fasteners are installed and connected so that the lower wall plate 12 of the flap box section is connected to the second crossbeam 32 and the overlapping part of the connecting strip plate 4 with countersunk fasteners to form the flap box section assembly.

[0079] Step S2 also includes the installation of the end-sealing rib 7. The upper tail edge wall plate 21, the lower tail edge wall plate 22, the "C"-shaped auxiliary beam 5, the full-height tail edge honeycomb 6, and the end-sealing rib 7 are all connected by a co-curing process. The end-sealing rib bracket 72 and the extension of the end of the end-sealing rib bracket 72 toward the flap box section 1 are all connected to the upper tail edge wall plate 21 and the first crossbeam 31 by a co-curing process, and / or connected to the lower tail edge wall plate 22 by the connecting strip plate 4.

[0080] This utility model also provides a wing that improves the structural rationality of the wing by adopting the above-mentioned flap trailing edge structure.

[0081] Specifically, such as Figures 3 to 6 As shown, an airfoil includes a wing box and a flap trailing edge disposed at the end of the wing box. Since the openings of the flap box section 1 and the flap trailing edge 2 are directly connected by a single component, namely a "J"-shaped rear beam 3, the number of airfoil parts is reduced. This avoids the problem of mismatched and coordinated installation gaps between the parts during airfoil assembly. Because the installation gaps are controlled, the flatness of the flap surface can be further ensured, thereby avoiding the problem of reverse step difference. In addition, the weight of the airfoil flap structure is effectively reduced, while the workload and assembly difficulty of the airfoil flap structure assembly are reduced, the assembly accuracy is improved, and the structural manufacturing cost is reduced.

[0082] This utility model also provides an aircraft, including a fuselage and wings, with the wings connected to the fuselage, thereby improving the structural rationality of the aircraft.

[0083] Specifically, such as Figures 3 to 6As shown, an aircraft includes a fuselage and a wing. The wing is connected to the fuselage. Since the openings of the flap box section 1 and the flap trailing edge 2 are directly connected by a single component, namely the "J"-shaped rear spars 3, the number of parts in the aircraft wing is reduced. This avoids the problem of mismatched and coordinated installation clearances between the parts during the assembly of the aircraft wing. Because the installation clearances are controlled, the flatness of the flap surface can be further ensured, thereby avoiding the problem of reverse step difference. In addition, it effectively reduces the weight of the flap structure of the aircraft wing, while reducing the workload and assembly difficulty of the flap structure assembly, improving assembly accuracy, and reducing structural manufacturing costs.

[0084] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A flap trailing edge structure, characterized in that, include: The flap box section (1) includes an upper wall panel (11) and a lower wall panel (12) of the flap box section, with an opening formed between the upper wall panel (11) and the lower wall panel (12); The flap trailing edge (2) includes an upper trailing edge panel (21) and a lower trailing edge panel (22). An opening is formed between one end of the upper trailing edge panel (21) and one end of the lower trailing edge panel (22). The opening of the flap box section (1) and the opening of the flap trailing edge (2) are directly opposite each other. The "J"-shaped rear beam (3) includes a first crossbeam (31), a second crossbeam (32), and a vertical beam (33) for connecting the first crossbeam (31) and the second crossbeam (32). The second crossbeam (32) and part of the first crossbeam (31) are inserted into the opening of the flap box section (1). Part of the first crossbeam (31) is connected to the upper wall panel (11) of the flap box section. Another part of the first crossbeam (31) is inserted into the opening of the flap trailing edge (2) and connected to the upper wall panel (21) of the trailing edge.

2. The flap trailing edge structure according to claim 1, characterized in that, The flap trailing edge structure also includes a connecting strip plate (4), one end of which is connected between the second crossbeam (32) and the lower wall plate (12) of the flap box section, and the other end of which is inserted into the opening of the flap trailing edge (2) and connected to the flap trailing edge (2).

3. The flap trailing edge structure according to claim 2, characterized in that, The flap trailing edge structure also includes a "C"-shaped auxiliary beam (5), which is disposed inside the flap trailing edge (2) and the opening of the "C"-shaped auxiliary beam (5) is aligned with the opening of the flap trailing edge (2). One end of the "C"-shaped auxiliary beam (5) is connected between the upper trailing edge wall plate (21) and a portion of the first crossbeam (31) inserted into the opening of the flap trailing edge (2). The other end of the "C"-shaped auxiliary beam (5) is connected between the lower trailing edge wall plate (22) and the other end of the connecting strip plate (4) inserted into the opening of the flap trailing edge (2).

4. The flap trailing edge structure according to claim 3, characterized in that, The trailing edge structure also includes a full-height honeycomb (6) at the trailing edge. The other end of the upper trailing edge wall panel (21) away from the flap box section (1) and the other end of the lower trailing edge wall panel (22) away from the flap box section (1) are connected. The full-height honeycomb (6) at the trailing edge is disposed in the accommodating space formed by the upper trailing edge wall panel (21), the lower trailing edge wall panel (22) and the "C"-shaped auxiliary beam (5).

5. The flap trailing edge structure according to claim 4, characterized in that, The upper trailing edge panel (21) has a bent section (211) at one end away from the flap box section (1), and the bent section (211) is connected to the lower trailing edge panel (22).

6. The flap trailing edge structure according to any one of claims 2-5, characterized in that, The first crossbeam (31) is provided with a plurality of grooves, the upper wall plate (21) of the tail edge and the upper wall plate (11) of the flap box section are provided with a plurality of protrusions corresponding to the plurality of grooves; and / or, the second crossbeam (32) is provided with a plurality of grooves, and the end of the connecting strip plate (4) connected between the second crossbeam (32) and the lower wall plate (12) of the flap box section is provided with a plurality of protrusions corresponding to the plurality of grooves, and the plurality of grooves can engage and limit the plurality of protrusions.

7. The flap trailing edge structure according to any one of claims 2-5, characterized in that, The connecting strip (4) is provided with multiple strips along the spanwise direction of the flap trailing edge structure.

8. The flap trailing edge structure according to any one of claims 2-5, characterized in that, The upper wall panel (11) of the flap box section is connected to the first crossbeam (31), the lower wall panel (12) of the flap box section is connected to the connecting strip plate (4), and the connecting strip plate (4) is connected to the first crossbeam (31) by countersunk fasteners.

9. A wing, characterized in that, It includes a wing box and a flap trailing edge structure as described in any one of claims 1-8 disposed at the end of the wing box.

10. An aircraft, characterized in that, It includes a fuselage and a wing as described in claim 9, the wing being connected to the fuselage.

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