Novel wingtip winglet of drag reduction wing

Abstract

The utility model relates to the technical field of wingtip winglets, in particular to a novel anti-drag wingtip winglet which comprises a main body, wings are symmetrically arranged on two side surfaces of the main body, the wings are connected with the winglet, a plurality of wing ribs are arranged in the winglet, a plurality of stringers are arranged in the wing ribs, reinforcing wing ribs are arranged in the wing ribs, and the wingtip winglet is connected with the winglet. A plurality of connectors are arranged on one side face of the wing rib, a noise reduction assembly is arranged outside the wing rib, a skin is arranged outside the noise reduction assembly, and the noise reduction assembly, a sound absorption layer, a sound insulation layer and an airflow guide plate are utilized; the problems that in the actual flight process, certain noise is generated when airflow passes through the winglet, the riding experience of passengers is affected, noise pollution is caused to the surrounding environment, in addition, along with the prolonging of the flight time of an aircraft, the winglet vibrates under the action of the airflow, and the vibration of the winglet is affected are solved through the structures of the micro-pore noise reduction net and the vibration suppression layer. The generation of noise is further aggravated, and a higher requirement on the structural stability of the winglet is put forward.

Description

Technical Field

[0001] The utility model relates to the technical field of winglets, in particular to a novel wingtip winglet for drag reduction. Background Art

[0002] Wingtip winglets, commonly known as winglets, are small wings similar to the wing surface, which are approximately perpendicular to the wing surface. The basic principle is to reduce induced drag by adjusting the wingtip vortex so that it moves further away from the outside of the wing and moves above the laminar flow. When air flows over the wing, due to the pressure difference between the upper and lower wing surfaces, the airflow will flow from the lower wing surface around the wingtip to the upper wing surface, forming wingtip vortices. The role of the winglet is to readjust these vortices, reduce their intensity, and thus reduce drag. Its design and application are of great significance to improving the aerodynamic performance of aircraft, reducing fuel consumption and increasing range.

[0003] During actual flight, a certain amount of noise will be generated when airflow passes through the winglets, which not only affects the passengers' riding experience, but also causes noise pollution to the surrounding environment. In addition, as the aircraft's flight time increases, the winglets will vibrate under the action of airflow, further aggravating the noise generation and putting higher requirements on the structural stability of the winglets.

[0004] Therefore, it is particularly important to design a new type of drag-reducing wingtip winglet to change the above technical defects and improve overall practicality. Utility Model Content

[0005] The purpose of the present invention is to provide a novel wingtip winglet for reducing drag, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A novel drag-reducing wingtip winglet comprises a main body, wings symmetrically provided on both sides of the main body, the wings connected to the winglet, a plurality of ribs provided inside the winglet, a plurality of stringers provided inside the ribs, a reinforcing rib provided inside the ribs, a plurality of joints provided on one side of the ribs, a noise reduction assembly provided outside the ribs, and a skin provided outside the noise reduction assembly;

[0008] The noise reduction assembly includes a sound-absorbing layer, a sound-insulating layer, an airflow guide plate, a microporous noise reduction net, and a vibration suppression layer. The sound-absorbing layer is tightly attached to the outer surface of the rib and the reinforced rib, the sound-insulating layer is wrapped around the outer periphery of the sound-absorbing layer, the airflow guide plate is arranged at the leading edge and trailing edge of the noise reduction assembly, the microporous noise reduction net covers the inner side of the skin, forming a certain gap with the skin, and the vibration suppression layer is located between the noise reduction assembly and the skin.

[0009] As a preferred solution of the present invention, the sound-absorbing layer is made of glass fiber, which is used to absorb and reduce the noise generated when the airflow passes through the winglet.

[0010] As a preferred solution of the present invention, the sound insulation layer is made of high-density polyurethane foam, which is used to isolate the external environmental noise from the vibration noise of the internal structure of the winglet, further improving the noise reduction effect.

[0011] As a preferred solution of the present invention, the airflow guide plate is made of carbon fiber composite material, which optimizes the airflow path, reduces turbulence, and thus reduces aerodynamic noise.

[0012] As a preferred solution of the present invention, the microporous noise reduction mesh adopts a metal microporous mesh to disperse the impact force of the airflow, reduce the noise generated by the direct impact of the airflow on the skin, and keep the structure lightweight.

[0013] As a preferred solution of the present invention, the vibration suppression layer uses rubber damping material to effectively suppress the vibration of the winglet caused by airflow during flight, further reducing the noise caused thereby.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. In the utility model, a new type of drag-reducing wingtip winglet is set up, which utilizes the structure of noise reduction components, sound absorption layer, sound insulation layer, airflow guide plate; microporous noise reduction net and vibration suppression layer. Through the setting, the problem that during actual flight, when airflow passes through the wingtip winglet, a certain noise is generated, which not only affects the passengers' riding experience, but also causes noise pollution to the surrounding environment. In addition, as the flight time of the aircraft increases, the wingtip winglet will vibrate under the action of airflow, further aggravating the generation of noise and putting forward higher requirements on the structural stability of the wingtip winglet is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the utility model;

[0017] Figure 2 is a schematic diagram of a winglet assembly of the present invention;

[0018] Figure 3 This is a schematic diagram of the noise reduction component of the present invention.

[0019] In the figure: 1. Main body; 101. Wing; 102. Winglet; 103. Rib; 104. Stringer; 105. Joint; 106. Skin; 107. Reinforced rib; 2. Noise reduction component; 201. Sound-absorbing layer; 202. Sound insulation layer; 203. Airflow guide plate; 204. Microporous noise reduction net; 205. Vibration suppression layer. DETAILED DESCRIPTION

[0020] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. Several embodiments of the present invention are provided. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0022] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] For examples, see Figure 1-3 , the utility model provides a technical solution:

[0025] A novel drag-reducing wingtip winglet comprises a main body 1, wings 101 are symmetrically arranged on both sides of the main body 1, the wings 101 are connected to the winglets 102, a plurality of ribs 103 are arranged inside the winglets 102, a plurality of stringers 104 are arranged inside the ribs 103, a reinforcing rib 107 is arranged inside the ribs 103, a plurality of joints 105 are arranged on one side of the ribs 103, a noise reduction component 2 is arranged outside the ribs 103, a skin 106 is arranged outside the noise reduction component 2, and the noise reduction component 2 includes an absorbent Sound layer 201, sound insulation layer 202, air flow guide plate 203, microporous noise reduction mesh 204, vibration suppression layer 205. The sound absorbing layer 201 is closely attached to the outer surface of the rib 103 and the reinforcing rib 107. The sound insulation layer 202 is wrapped around the outer periphery of the sound absorbing layer 201. The air flow guide plate 203 is set at the leading and trailing edges of the noise reduction component 2. The microporous noise reduction mesh 204 covers the inner side of the skin 106, forming a certain gap with the skin 106. The vibration suppression layer 205 is located between the noise reduction component 2 and the skin 106.

[0026] The sound-absorbing layer 201 is made of glass fiber, which is used to absorb and reduce the noise generated by the airflow passing through the winglet 102. The glass fiber material is lightweight and high-strength, which helps to maintain the overall lightweight of the wingtip winglet. The sound insulation layer 202 is made of high-density polyurethane foam, which is used to isolate external environmental noise from the vibration noise of the internal structure of the winglet 102, further improving the noise reduction effect. The polyurethane foam material is easy to process and shape and can adapt to the complex shape of the wingtip winglet. The airflow guide plate 203 is made of carbon fiber composite material, which reduces turbulence by optimizing the airflow path, thereby reducing aerodynamic noise. Carbon fiber composite material has the characteristics of lightness and high strength. It can reduce the weight of the wingtip winglet while providing sufficient structural support. The microporous noise reduction mesh 204 adopts a metal microporous mesh to disperse the impact force of the airflow and reduce the noise generated by the direct impact of the airflow on the skin 106, while keeping the structure lightweight. The metal microporous mesh structure is lightweight and has high strength, which can maintain the overall structural stability of the wingtip winglet. The vibration suppression layer 205 adopts rubber damping material to effectively suppress the vibration of the winglet caused by the airflow during flight, and further reduce the noise caused thereby. The rubber damping material has excellent vibration suppression performance and can effectively absorb and disperse the vibration energy generated by the airflow during flight of the winglet.

[0027] The working process of the present utility model is as follows: when using the new drag-reducing wingtip winglet, first the winglet 102 is connected and installed with the winglet 101 through the joint 105. When the airflow passes through the winglet 102, the glass fiber sound-absorbing layer 201 first absorbs and reduces the noise. Then the high-density polyurethane foam sound insulation layer 202 isolates the external environmental noise from the internal vibration noise of the winglet 102. The airflow guide plate 203 made of carbon fiber composite material optimizes the airflow path and reduces aerodynamic noise. The metal microporous mesh 204 disperses the impact force of the airflow and further reduces the noise. Finally, the rubber damping material vibration suppression layer 205 effectively suppresses the vibration caused by the airflow during flight, comprehensively reduces noise, and ensures the lightweight and structural stability of the wingtip winglet 102.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel drag-reducing wingtip winglet, comprising a main body (1), characterized in that: Wings (101) are symmetrically provided on both sides of the main body (1), the wings (101) are connected to winglets (102), a plurality of ribs (103) are provided inside the winglets (102), a plurality of stringers (104) are provided inside the ribs (103), a reinforcing rib (107) is provided inside the ribs (103), a plurality of joints (105) are provided on one side of the ribs (103), a noise reduction component (2) is provided outside the ribs (103), and a skin (106) is provided outside the noise reduction component (2); The noise reduction component (2) comprises a sound absorbing layer (201), a sound insulating layer (202), an air flow guide plate (203), a microporous noise reduction net (204), and a vibration suppression layer (205); the sound absorbing layer (201) is closely attached to the outer surfaces of the wing rib (103) and the reinforcing wing rib (107); the sound insulating layer (202) is wrapped around the periphery of the sound absorbing layer (201); the air flow guide plate (203) is arranged at the leading edge and the trailing edge of the noise reduction component (2); the microporous noise reduction net (204) covers the inner side of the skin (106) and forms a certain gap with the skin (106); and the vibration suppression layer (205) is located between the noise reduction component (2) and the skin (106).

2. The novel drag-reducing wingtip winglet according to claim 1, characterized in that: The sound absorbing layer (201) is made of glass fiber and is used to absorb and reduce the noise generated when the airflow passes through the winglet (102).

3. The novel drag-reducing wingtip winglet according to claim 1, characterized in that: The sound insulation layer (202) is made of high-density polyurethane foam and is used to isolate external environmental noise from the vibration noise of the internal structure of the winglet (102), further improving the noise reduction effect.

4. The novel drag-reducing wingtip winglet according to claim 1, characterized in that: The airflow guide plate (203) is made of carbon fiber composite material, and reduces turbulence by optimizing the airflow path, thereby reducing aerodynamic noise.

5. The novel drag-reducing wingtip winglet according to claim 1, characterized in that: The microporous noise reduction net (204) is a metal microporous net, which is used to disperse the impact force of the airflow and reduce the noise generated by the airflow directly impacting the skin (106), while keeping the structure lightweight.

6. The novel drag-reducing wingtip winglet according to claim 1, characterized in that: The vibration suppression layer (205) is made of rubber damping material, which effectively suppresses the vibration of the winglet caused by airflow during flight, and further reduces the noise caused thereby.

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