CN211543866U - Composite material partition frame structure for aircraft wing trailing edge - Google Patents

Composite material partition frame structure for aircraft wing trailing edge Download PDF

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Publication number
CN211543866U
CN211543866U CN201921817217.6U CN201921817217U CN211543866U CN 211543866 U CN211543866 U CN 211543866U CN 201921817217 U CN201921817217 U CN 201921817217U CN 211543866 U CN211543866 U CN 211543866U
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China
Prior art keywords
bulkhead
bulkhead structure
core
trailing edge
foam core
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CN201921817217.6U
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Chinese (zh)
Inventor
李森
司超超
崔孝展
薛佼
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Avic Xifei Civil Aircraft Co ltd
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Avic Xifei Civil Aircraft Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00Aeronautics or air transport
    • Y02T50/40Weight reduction

Abstract

The front end of the bulkhead structure is connected with a wing box section, two sides of the bulkhead structure are adjacent to movable wing surfaces, the bulkhead structure is a wedge-shaped cantilever structure integrally formed by composite materials, an open cavity is formed in the front end of the bulkhead structure, two sides of the bulkhead structure are parallel to the movable wing surfaces, the bulkhead structure comprises an outer panel and a bulkhead core, the outer panel coats the bulkhead core to form an integrated structure, the upper surface and the lower surface of the outer panel are in the theoretical appearance of the wing, the bulkhead core comprises an inner panel and a foam core, the inner panel is positioned at the front section of the bulkhead structure, is a trapezoidal frame with an open front end and is matched with the appearance of the cavity at the front end of the bulkhead structure, the foam core is positioned at the rear section of the bulkhead structure and is a trapezoidal table made of the foam core, and the front end of the foam core is attached to the rear end of the inner panel.

Description

Composite material partition frame structure for aircraft wing trailing edge
Technical Field
The application relates to the technology of airplane design and manufacture, in particular to a composite material bulkhead structure at the trailing edge of an airplane wing.
Background
The bulkhead structure is a cantilever type structure which is connected with a wing box section on the front side of the aircraft and is flush with the tail part of the movable wing surface on the rear side, and the bulkhead structure is mainly used for maintaining the aerodynamic shape of the wing profile, reducing the airflow resistance and providing support for the extrusion sealing of rubber profiles on the end surfaces of the movable wing surfaces. Because the height of the back beam of the airplane wing is high, and the aerodynamic profile height of the tail part of the wing is generally low, the bulkhead structure has violent change along the course profile height, more complex profile, smaller span-wise width and more gradual change along the wing profile span-wise direction.
In the prior art, such a former structure is generally machined from an aluminium alloy material to form corresponding thin-walled parts, which are then assembled to form a cavity structure. On one hand, the component has heavier weight, is easy to crack under the long-term action of pneumatic load and has poorer fatigue performance; on the other hand, in order to ensure the aerodynamic appearance, the precision requirement and the surface quality of the wing, the external surface of the part must be subjected to finish machining and formed, and meanwhile, a special fixture is required to be used for assembling the part, which increases the production cost of the bulkhead. Therefore, there is a need to solve the problem of designing a wing trailing edge bulkhead structure, which effectively reduces the structural weight and manufacturing cost, improves the structural efficiency and prolongs the service life while meeting the relevant design requirements.
Disclosure of Invention
In order to solve the defects in the prior art, the composite cantilever type bulkhead structure is simple and reasonable in structure, the weight and the manufacturing cost of the structure are reduced, and the structural efficiency and the service life of the airplane are improved.
The utility model provides an aircraft wing trailing edge combined material bulkhead structure, the front end of bulkhead structure is connected with the wing box section, and the both sides of bulkhead structure are adjacent with the activity airfoil, its characterized in that, the bulkhead structure be a combined material integrated into one piece's wedge cantilever structure, its front end has the cavity that opens, both sides are parallel with the activity airfoil, the bulkhead structure contains outer panel and bulkhead core, outer panel cladding bulkhead core forms an organic whole structure, the upper and lower surface of outer panel is the theoretical appearance of wing, the bulkhead core contain interior panel and foam core, the anterior segment that the interior panel is located the bulkhead structure, is a trapezoidal frame that the front end opens, matches with the front end cavity appearance of bulkhead structure, the foam core be located the back end of bulkhead structure, be a trapezoidal platform of making with the foam core, the front end of foam core is laminated with the back end of interior panel.
The rear end of the partition frame core is also provided with a glass fiber reinforced plastic block, the glass fiber reinforced plastic block is attached to the foam core, and the outer side surface of the glass fiber reinforced plastic block is matched with the shape of the rear end of the partition frame structure.
The inner wall of the cavity at the front end of the partition frame structure is of a laminated plate structure and is used as a connecting area of the cantilever type partition frame structural member.
The cantilever type bulkhead structure is applied between adjacent movable airfoil surfaces, and the course front side is connected with the upper wall plate, the lower wall plate and the back beam of the airfoil surface box section through the connecting joints to provide support for compression sealing of rubber profiles of the adjacent movable airfoil surfaces.
The beneficial effect of this application lies in: the composite material wing trailing edge cantilever type bulkhead structure is simple in structural form, the weight and the production cost of the bulkhead structure are reduced, the structural efficiency and the service life of an airplane are improved, the structural rigidity is high, the stability is good, and the structure is safe and reliable.
The present application is described in further detail below with reference to the accompanying drawings of embodiments.
Drawings
FIG. 1 is a schematic view of the structural configuration of the composite bulkhead at the trailing edge of the aircraft wing of the present application.
FIG. 2 is a cross-sectional view of an aircraft wing trailing edge composite bulkhead structure according to the present application.
FIG. 3 is a schematic illustration of an outer panel layup of an aircraft wing trailing edge composite bulkhead structure according to the present application.
FIG. 4 is a schematic illustration of the use of the composite bulkhead structure of the aircraft trailing edge of the present application.
The numbering in the figures illustrates: 1 a bulkhead structure, 2 inner panels, 3 foam cores, 4 glass fiber reinforced plastic blocks, 5 outer panels, 6 upper wall plates, 7 lower wall plates, 8 back beams, 9 connecting joints, 10 first movable wing surfaces, 11 rubber profiles and 12 second movable wing surfaces.
Detailed Description
Referring to the drawings, as shown in fig. 1 to 4, the present application provides a composite bulkhead structure at the trailing edge of an aircraft wing, the front end of the bulkhead structure 1 is connected to a wing box section, two sides of the bulkhead structure 1 are adjacent to a first movable wing surface 10 and a second movable wing surface 12, the bulkhead structure 1 is a wedge-shaped cantilever structure integrally formed by composite materials, the front end of the bulkhead structure 1 has an open cavity, two sides of the bulkhead structure are parallel to the movable wing surfaces, the bulkhead structure 1 comprises an outer panel 5 and a bulkhead core, the outer panel 5 covers the bulkhead core to form an integral structure, the upper and lower surfaces of the outer panel 5 are the theoretical shape of the wing, the bulkhead core comprises an inner panel 2 and a foam core 3, the inner panel 2 is located inside the front section of the bulkhead structure 1 and is a trapezoid frame with an open front end and is matched with the front end cavity shape of the bulkhead structure 2, the foam core 3 is located inside the rear section of the bulkhead structure 1, is a trapezoidal table made of a foam core, and the front end of the foam core is attached to the rear end of the inner panel.
In order to facilitate the paving and pasting of the outer panel and ensure the strength of the rear end of the spacer frame structure, the rear end of the spacer frame core is also provided with a glass fiber reinforced plastic block 4, the glass fiber reinforced plastic block 4 is attached to the foam core 3, and the outer side surface of the glass fiber reinforced plastic block 4 is matched with the shape of the rear end of the spacer frame structure 1.
The inner panel 2, the foam core 3 and the glass fiber reinforced plastic block 4 jointly form a partition frame core of a partition frame structure.
The composite material bulkhead structure of the aircraft wing trailing edge is made of composite materials, and can be formed by a prepreg/autoclave forming method or a vacuum assisted resin transfer molding (VARI) method. Compared with a prepreg/autoclave forming method, the vacuum assisted resin transfer molding forming method is adopted to form, so that the manufacturing cost of parts can be greatly reduced.
In the specific operation process, the size of the inner cavity of the inner panel 2 and the structural sizes of the foam core 3 and the glass fiber reinforced plastic block 4 are inwards calculated according to the theoretical appearance of the wing and the thicknesses of the laminated plates of the outer panel 5 and the inner panel 2, so that a corresponding tool mold and a corresponding fixture frame are manufactured, and the foam core 3 and the glass fiber reinforced plastic block 4 are manufactured by using a machining method. The utility model provides a combined material wing trailing edge cantilever type bulkhead structure adopts combined material to press from both sides core structure, uses frock mould to carry out the formpiston to shop and pastes to interior panel 2, then uses frock type frame to assemble fixedly to shop's the interior panel 2 that pastes, foam core 3 and glass steel 4, spreads the subsides around interior panel 2, foam core 3 and glass steel 4 with outer panel 5 after that, makes the prefabricated formed part of bulkhead structure. In order to reduce the manufacturing cost, the prefabricated forming part is preferably formed by adopting a vacuum-assisted resin transfer molding method, the prefabricated forming part is packaged and vacuumized, resin is injected when the prefabricated forming part reaches a certain vacuum degree, the resin is heated after the resin is fully flowed, soaked and permeated, the inner panel 2, the foam core 3, the glass fiber reinforced plastic 4 and the outer panel 5 form a composite material integral structural part after the resin is fully cured in the period, then demoulding is carried out, and the composite material partition frame structure forming part is mechanically processed to manufacture the composite material wing trailing edge cantilever type partition frame structure body 1 which meets the design requirements and meets the functional requirements.
FIG. 1 illustrates a preferred embodiment of the aircraft trailing edge composite bulkhead structure of the present application. The upper surface and the lower surface of the bulkhead structure 1 are in the theoretical shape of a wing, the left side and the right side of the bulkhead structure are parallel to the end face of the movable wing surface, and a cavity at the front side is in a laminated plate structure and serves as a connecting area of a cantilever type bulkhead structural member.
FIG. 2 illustrates a cross-sectional view of an aircraft wing trailing edge composite bulkhead structure according to the present application. The outer panel 5 is cured and connected with the inner panel 2, the foam core 3 and the glass fiber reinforced plastic block 4 into an integral structure.
FIG. 3 is a schematic illustration of an outer panel layup of an aircraft wing trailing edge composite bulkhead structure according to the present application. According to a feasible layering schematic diagram of a sandwich area of a composite material bulkhead structure at the trailing edge of the wing, layering is carried out on the upper surface and the lower surface of the foam core 3 in a lap joint mode.
Fig. 4 is a schematic view illustrating a use state of the composite material bulkhead structure of the aircraft wing trailing edge of the application. The bulkhead structure 1 is applied between a first movable airfoil 10 and a second movable airfoil 12, and the heading front side is connected with an airfoil box section upper wall plate 6, a lower wall plate 7 and a back beam 8 through a connecting joint 9, so as to separate the first movable airfoil 10 from the second movable airfoil 12 and provide support for the compression sealing of a rubber profile 11 of the first movable airfoil 10. The cantilever type bulkhead structure 1 and the connecting joint 9 can be connected in various modes such as screwing, riveting, gluing and the like, and necessary anticorrosion treatment is carried out on the contact surface.
To sum up, the composite material bulkhead structure of aircraft wing trailing edge that this application provided adopts combined material to make, has that fatigue strength is good, rigidity is high, anticorrosive characteristics, has reduced bulkhead structure's weight and manufacturing cost, has improved structural efficiency and life to use the maintenance cost also can reduce. In addition, the vacuum-assisted resin transfer molding process can greatly reduce the manufacturing cost of parts.
While specific embodiments of the composite bulkhead structure for the trailing edge of an aircraft wing of the present application have been described in detail, it is not intended to be limiting and any simple modifications of the above embodiments based on the technical spirit of the present application are within the technical scope of the present application.

Claims (4)

1. The utility model provides an aircraft wing trailing edge combined material bulkhead structure, the front end of bulkhead structure is connected with the wing box section, and the both sides of bulkhead structure are adjacent with the activity airfoil, its characterized in that, the bulkhead structure be a combined material integrated into one piece's wedge cantilever structure, its front end has the cavity that opens, both sides are parallel with the activity airfoil, the bulkhead structure contains outer panel and bulkhead core, outer panel cladding bulkhead core forms an organic whole structure, the upper and lower surface of outer panel is the theoretical appearance of wing, the bulkhead core contain interior panel and foam core, the anterior segment that the interior panel is located the bulkhead structure, is a trapezoidal frame that the front end opens, matches with the front end cavity appearance of bulkhead structure, the foam core be located the back end of bulkhead structure, be a trapezoidal platform of making with the foam core, the front end of foam core is laminated with the back end of interior panel.
2. An aircraft wing trailing edge composite bulkhead structure according to claim 1, wherein the rear end of the bulkhead core is further provided with a glass reinforced plastic block, the glass reinforced plastic block is attached to the foam core, and the outer side of the glass reinforced plastic block is matched with the shape of the rear end of the bulkhead structure.
3. An aircraft wing trailing edge composite bulkhead structure according to claim 1, wherein the inner wall of the cavity at the forward end of the bulkhead structure is of laminate construction and serves as a connection area for the cantilevered bulkhead structure.
4. An aircraft wing trailing edge composite bulkhead structure according to claim 1, 2 or 3, wherein the cantilevered bulkhead structure is applied between adjacent moving airfoils, the forward side of the wing nose being connected to the upper panel, the lower panel and the back spar of the airfoil box section by connecting joints to provide support for the adjacent moving airfoil rubber profile compression seals.
CN201921817217.6U 2019-10-25 2019-10-25 Composite material partition frame structure for aircraft wing trailing edge Active CN211543866U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921817217.6U CN211543866U (en) 2019-10-25 2019-10-25 Composite material partition frame structure for aircraft wing trailing edge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921817217.6U CN211543866U (en) 2019-10-25 2019-10-25 Composite material partition frame structure for aircraft wing trailing edge

Publications (1)

Publication Number Publication Date
CN211543866U true CN211543866U (en) 2020-09-22

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Country Status (1)

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CN (1) CN211543866U (en)

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