阅读说明：本技术 一种尾翼前缘分鸟器结构 (Tail wing front edge bird dividing device structure ) 是由 张庆 吴斌 陈顺强 达磊 于 2021-09-15 设计创作，主要内容包括：本申请涉及飞机结构设计领域,为一种尾翼前缘分鸟器结构,设于前梁与垂尾前缘舱前部之间,包括前缘蒙皮、分鸟器、支撑组件,所述前缘蒙皮呈弧形结构并设于垂尾前缘舱外壁上,所述分鸟器包括第一分流板、连接板、第二分流板,所述第一分流板和第二分流板分设于连接板的两侧并且对称设置,所述第一分流板、第二分流板、连接板在靠近垂尾舱前部的一端相连,形成箭头结构,所述支撑组件设于前梁与分鸟器之间并与分鸟器相连。具有结构简单稳定、占用空间小、重量轻、能够有效抵抗鸟撞的技术效果。(The utility model relates to an aircraft structural design field for a fin leading edge divides bird ware structure locates between the front-end beam and vertical fin leading edge cabin is anterior, including leading edge covering, branch bird ware, supporting component, the leading edge covering is the arc structure and locates on vertical fin leading edge cabin outer wall, divide the bird ware to include first splitter plate, connecting plate, second splitter plate, first splitter plate and second splitter plate divide the both sides of locating the connecting plate and the symmetry sets up, first splitter plate, second splitter plate, connecting plate link to each other near the anterior one end in vertical fin cabin, form the arrow point structure, supporting component locates between the front-end beam and the branch bird ware and links to each other with branch bird ware. The bird strike resistant device has the technical effects of simple and stable structure, small occupied space, light weight and capability of effectively resisting bird strike.)

1. The utility model provides a fin leading edge divides bird ware structure, locates between fore-stock (11) and vertical tail leading edge cabin front portion, its characterized in that, includes leading edge covering (1), divides bird ware, supporting component, leading edge covering (1) is the arc structure and locates on the outer wall of vertical tail leading edge cabin, divide the bird ware to include first splitter plate (2), connecting plate (3), second splitter plate (4), first splitter plate (2) and second splitter plate (4) divide and locate the both sides of connecting plate (3) and the symmetry sets up, first splitter plate (2), second splitter plate (4), connecting plate (3) link to each other near the anterior one end in vertical tail cabin, form the arrow point structure, supporting component locates between fore-stock (11) and the branch bird ware and links to each other in dividing the bird ware.

2. The tail leading edge bird splitter structure of claim 1, wherein: supporting blocks (5) are arranged among the first flow dividing plate (2), the second flow dividing plate (4) and the connecting plate (3), and the side wall, close to the supporting component, of each supporting block (5) is of an arc concave structure (6).

3. The tail leading edge bird splitter structure of claim 1, wherein: the supporting component is two sets of and the both sides of connecting plate (3) are located to the symmetry, the supporting component includes diaphragm (7), vertical plate (8) and swash plate (9), vertical plate (8) can be dismantled with connecting plate (3) and be connected, diaphragm (7) can be dismantled with front-axle beam (11) and be connected, the outside of diaphragm (7) is located in vertical plate (8), swash plate (9) outside slope and both ends link to each other with diaphragm (7) and vertical plate (8) respectively.

4. The tail leading edge bird splitter structure of claim 3, wherein: two sets of be equipped with backup pad (10) between the bearing structure, backup pad (10) are isosceles trapezoid and set up and the inclination of both sides is the same with swash plate (9), the both sides of backup pad (10) paste with the inner wall of two sets of swash plates (9) respectively mutually, the bottom and the front-axle beam (11) of backup pad (10) paste mutually.

5. The tail leading edge bird splitter structure of claim 3, wherein: the longitudinal plates (8) are connected with the connecting plates (3) and the transverse plates (7) are connected with the front beam (11) through bolts.

6. The tail leading edge bird splitter structure of claim 1, wherein: the bird dividing device is made of an aluminum alloy material, and the supporting assembly is made of a 2024-T351 material.

7. The tail leading edge bird splitter structure of claim 1, wherein: the angle between the first splitter plate (2) and the second splitter plate (4) is 90 degrees, and the thickness is 1.5 mm.

8. The tail leading edge bird splitter structure of claim 1, wherein: the front edge skin (1) is made of an aluminum alloy sheet with the thickness of 1.5 mm.

9. The tail leading edge bird splitter structure of claim 1, wherein: the front beam (11) is a stiffening beam with the thickness of 1.8mm, and a plurality of groups of reinforcing ribs (12) arranged at intervals are arranged on the front beam (11).

10. The tail leading edge bird splitter structure of claim 1, wherein: the front edge skin (1) is connected with the front beam (11) through double rows of bolts.

Technical Field

The application belongs to the field of aircraft structure design, in particular to a tail wing leading edge bird dividing device structure.

Background

Bird strikes are a sudden and frequent flight accident, which, once occurring, can lead to damage to structural parts of the aircraft, and, if occurring, can lead to catastrophic accidents of aircraft destruction and human death. In the event of a bird striking an aircraft, the windward side of the aircraft, including the aircraft windshield, radome, engine, wing leading edge, and tail leading edge, are the most vulnerable locations to bird strikes. The collision of the flying airplane with birds is always a very concern for airplane designers, and since the collision of the flying airplane with birds is difficult to completely avoid, the bird collision factor is considered in the airplane design process, so that the improvement of the collision resistance of the flying airplane is very important. Especially for the tail structure, in both CCAR25.631 clause and HB7084, it is explicitly stated that: the tail structure must be designed to ensure that the aircraft continues to fly and land safely after a collision with a bird weighing 3.6Kg (8lb) at a speed equal to the cruising speed of the aircraft at the selected sea level.

An airplane bird strike is a high-energy impact, and the structure can bear tens of thousands of J impact energy, while at the moment of bird strike, the structure needs to bear hundreds of thousands of N impact loads. Various models of aircraft have various bird strike resistant solutions depending on the size of the leading edge structure, the status of the leading edge contents and cassette section structure design, and the economy of the airfoil repair. The requirement for bird strike resistance and weight reduction of structures are often contradictory, with large aircraft such as: a380 and B787 and the like fully utilize the characteristic of large structural size of the airplane, a force-bearing auxiliary box section is designed in front of the box section to serve as a buffer, and a stainless steel plate or a titanium alloy plate is pasted on a front edge skin to serve as a protection; however, many small and medium-sized airplanes have small size of the front edge cabin, cannot design an auxiliary box section, only use the front edge and a thicker structure of aluminum alloy, and absorb the bird collision energy by means of the deformation energy of the structure. Although the recognized aramid fiber fabric has good performance characteristics, the aramid fiber fabric has the characteristics of poor processing manufacturability and easiness in moisture absorption and expansion, so that the aramid fiber fabric is difficult to apply to a structure with a very high requirement on pneumatic appearance, such as an airplane leading edge. Therefore, how to design a bird strike prevention structure capable of adapting to various models is a problem to be solved.

Disclosure of Invention

The application aims to provide a tail wing leading edge bird separator structure to solve the problem that a small and medium-sized airplane in the prior art is difficult to design an effective bird collision prevention structure.

The technical scheme of the application is as follows: the utility model provides a fin leading edge divides bird ware structure, locates between the fore-stock and the vertical tail leading edge cabin is anterior, including leading edge covering, branch bird ware, supporting component, the leading edge covering is the arc structure and locates on the outer wall of vertical tail leading edge cabin, divide the bird ware to include first splitter plate, connecting plate, second splitter plate, the both sides and the symmetry setting of connecting plate are located to first splitter plate and second splitter plate branch, first splitter plate, second splitter plate, connecting plate are being close to the anterior one end in vertical tail cabin and are linking to each other, form the arrow point structure, supporting component locates between fore-stock and the branch bird ware and links to each other with branch bird ware.

Preferably, supporting blocks are arranged among the first flow dividing plate, the second flow dividing plate and the connecting plate, and the side wall of each supporting block, which is close to the supporting component, is of an arc-shaped concave structure.

Preferably, the supporting component is total two sets of and the both sides of connecting plate are located to the symmetry, the supporting component includes diaphragm, vertical plate and swash plate, the vertical plate can be dismantled with the connecting plate and be connected, the diaphragm can be dismantled with the front-axle beam and be connected, the outside of diaphragm is located to the vertical plate, the swash plate inclines to the outside and both ends link to each other with diaphragm and vertical plate respectively.

Preferably, a supporting plate is arranged between the two groups of supporting structures, the supporting plate is arranged in an isosceles trapezoid shape, the slopes of the two sides of the supporting plate are the same as those of the inclined plates, the two sides of the supporting plate are respectively attached to the inner walls of the two groups of inclined plates, and the bottom of the supporting plate is attached to the front beam.

Preferably, the longitudinal plates and the connecting plates, and the transverse plates and the front beam are connected through bolts.

Preferably, the bird separator is made of an aluminum alloy material, and the support assembly is made of a 2024-T351 material.

Preferably, the angle between the two groups of splitter plates is 90 °, and the thickness of the splitter plates is 1.5 mm.

Preferably, the leading edge skin is made of a 1.5mm thick sheet of aluminium alloy.

Preferably, the front beam is a stiffening beam with the thickness of 1.8mm, and a plurality of groups of reinforcing ribs arranged at intervals are arranged on the front beam.

Preferably, the front edge skin and the front beam are connected by double-row bolts.

The utility model provides a tail fin leading edge divides bird ware structure through setting up the leading edge covering on vertical fin leading edge cabin outer wall, hits through self deformation and carries out the energy-absorbing and direction to the bird, then under supporting component's support, cuts apart the bird body through the arrow point structure of dividing the bird ware to play effectual guard action to box section and inner structure.

Preferably, through set up the supporting shoe between first reposition of redundant personnel board, second reposition of redundant personnel board and connecting plate, can effectively improve the anti impact and the deformability of first reposition of redundant personnel board and second reposition of redundant personnel board, the setting up of circular arc recess makes the supporting shoe when guaranteeing support intensity, self weight is less.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.

Fig. 1 is a schematic view of the overall structure of the present application.

1. A leading edge skin; 2. a first splitter plate; 3. a connecting plate; 4. a second splitter plate; 5. a support block; 6. a circular arc concave structure; 7. a transverse plate; 8. a longitudinal plate; 9. a sloping plate; 10. a support plate; 11. a front beam; 12. and (5) reinforcing ribs.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

A tail wing leading edge bird separator structure is arranged between a front beam 11 and the front part of a vertical tail leading edge cabin as shown in figure 1, and a bird body shows hydrodynamic behaviors and has high energy during bird collision.

The bird separating device comprises a front edge skin 1, a bird separating device and a supporting assembly, wherein the front edge skin 1 is arranged on the outer wall of a vertical tail front edge cabin, and when a bird collides, the bird separating device plays a role in energy absorption and guiding through self deformation. The bird dividing device is arranged on the inner side of the front edge skin 1 and used for dividing a bird body, the bird dividing device comprises a first flow dividing plate 2, a connecting plate 3 and a second flow dividing plate 4, the first flow dividing plate 2 and the second flow dividing plate 4 are symmetrically arranged on two sides of the connecting plate 3, the first flow dividing plate 2, the second flow dividing plate 4 and the connecting plate 3 are connected at one end close to the front part of the vertical tail cabin to form an arrow structure, and the supporting component is arranged between the front beam 11 and the bird dividing device and connected with the bird dividing device.

After the front edge skin 1 is buffered, the bird body is divided through an arrow structure, and the divided bird device only has a small amount of large bird body scraps at most instead of a large amount of bird bodies entering the interior of the front edge cabin along the first flow dividing plate 2 and the second flow dividing plate 4, so that the purposes of protecting the box sections and the internal structure of the box sections are achieved.

Meanwhile, the bird body is divided by adopting an arrow structure, the self weight and the occupied space of the bird dividing device are small, the use of small and medium-sized airplanes can be met, the bird dividing device can also be used in large-sized airplanes, and the application range is wide.

Preferably, a supporting block 5 is arranged between the first splitter plate 2, the second splitter plate 4 and the connecting plate 3, one end of the supporting block 5 close to the supporting component is an arc-shaped concave structure 6, and the radius of the arc-shaped concave structure 6 is 5 mm. The supporting shoe 5 supports first flow divider 2 and second flow divider 4, has improved the shock resistance and the resistance to deformation ability of first flow divider 2 and second flow divider 4, and the design of circular arc indent structure 6 makes supporting shoe 5 when guaranteeing support intensity, self weight is less.

Preferably, the supporting components are two groups and symmetrically arranged on two sides of the connecting plate 3, each supporting component comprises a transverse plate 7, a longitudinal plate 8 and an inclined plate 9, the longitudinal plates 8 and the connecting plate 3 are detachably connected, the transverse plates 7 are detachably connected with the front beam 11, the longitudinal plates 8 are arranged on the outer sides of the transverse plates 7, and the inclined plates 9 are inclined towards the outer side and two ends of the inclined plates 9 are respectively connected with the transverse plates 7 and the longitudinal plates 8. Two supporting components form the isosceles triangle structure with the cooperation of front beam 11 and carry out the steady support to the bird ware, and isosceles triangle's apex angle is 68.7, and both sides length of side is 75mm, can effectively prevent to divide the bird ware to take place the skew in the striking to simple structure is stable, shared weight is less.

Preferably, a supporting plate 10 is arranged between the two groups of supporting structures, the supporting plate 10 is arranged in an isosceles trapezoid shape, the inclination of the two sides of the supporting plate is the same as that of the inclined plate 9, the two sides of the supporting plate 10 are respectively attached to the inner walls of the two groups of inclined plates 9, and the bottom of the supporting plate 10 is attached to the front beam 11. The support plate 10 can support the two sets of support structures by abutting against the front beam 11, preventing the support structures from tilting or deforming.

Preferably, the longitudinal plate 8 and the connecting plate 3, and the transverse plate 7 and the front beam 11 are connected through bolts, so that efficient and stable fixation among the front beam 11, the supporting structure and the connecting plate 3 is realized.

Preferably, the bird divider is made of an aluminum alloy material, and the supporting assembly is made of a 2024-T351 material. Adopt the aluminum alloy material, when guaranteeing to support intensity, self weight is lighter.

Preferably, the angle between the first flow distribution plate 2 and the second flow distribution plate 4 is 90 °, and the thickness is 1.5mm each.

Preferably, the skin is made of a 1.5mm sheet of aluminium alloy. The self weight is smaller while the anti-collision performance is ensured.

Preferably, the front beam 11 is a stiffening beam with a thickness of 1.8mm, and the front beam 11 is provided with a plurality of groups of reinforcing ribs 12 arranged at intervals. The bird splitter structure can be effectively supported and load transferred, and the strength of the front beam 11 can be effectively improved due to the arrangement of the reinforcing ribs 12.

Preferably, the front edge skin 1 and the front beam 11 are connected by using double rows of bolts, so that the front beam 11 and the front edge skin 1 are stably fixed.

A stable mutual supporting structure is formed among the bird separating device, the supporting component, the front beam 11 and the front edge skin 1, the strength is high, the impact resistance is strong, the bird separating device has the advantages of simple and stable structure, small occupied space and light weight, and can effectively resist bird collision and protect the box section and the internal structure of the box section.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.