Full-composite bilateral air inlet channel structure

Abstract

The utility model discloses a full-composite double-side air inlet channel structure, relates to the field of aircraft air inlet channels, solves the problems that the overall weight of an aircraft is large and the fuel efficiency is low due to the fact that an existing metal material product is large in overall weight, and adopts the following scheme that the full-composite double-side air inlet channel structure comprises two groups of air inlet channels which are distributed in an arc shape; the top ends of the two sets of air inlet channels are fixedly connected with lubricating oil tank connecting pieces, bulkhead connecting pieces are assembled on the outer walls of the air inlet channels, and the air inlet channels are fixedly connected to the machine body through the bulkhead connecting pieces. One end of the air inlet channel is fixedly connected with a lubricating oil tank connecting piece, and the other end of the air inlet channel is provided with a lip upper portion and a lip lower portion. According to the full-composite bilateral air inlet duct structure, through the arrangement of the air inlet duct composite material carbon fiber fabric and the partition frame connecting piece foam filling structure, good structural strength can be provided, various mechanical requirements in the flight process can be met, meanwhile, good high-temperature resistance is achieved, and the service life can be kept for a long time in the severe environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of aircraft inlet duct, concretely to a full composite double -sided inlet duct structure. BACKGROUND

[0002] The inlet duct of the aircraft is one of important components for the normal work of the jet engine, the traditional inlet duct is stable and reliable, but its production, assembly and maintenance process are relatively complex, and the main material is aluminum metal material, and the weight is large, therefore, a simple structure, batch production and light weight and easy maintenance aircraft inlet duct becomes the research and development concern point,

[0003] Through the search, the application number of patent application is 202320314752.X, discloses a small aircraft inlet duct, including: inlet duct body, the first connecting piece connected with the fuselage is formed to the inlet duct body and the engine air inlet one end outward flanging, the second connecting piece connected with the fuselage is formed to the inlet duct body's pipe body turning position along the pipe body circumferential outward extension;In the acute angle of connecting piece and the inlet duct body connection, adopt the fillet smooth transition connection.Through the small aircraft inlet duct of the utility model, can reduce cost;

[0004] The above application file realizes the effect of reducing cost through the setting of the smooth part of the connecting part, but the existing inlet duct still has the following problems:

[0005] 1. Difficult to maintain: the traditional aircraft inlet duct is usually composed of multiple complex components, which needs to be disassembled and reassembled during maintenance, which is time-consuming and easy to damage or misinstall;

[0006] 2. High manufacturing cost: the traditional inlet duct is made of metal material, which needs complex processing and assembly process, resulting in high manufacturing cost;

[0007] 3. High temperature resistance: the aircraft inlet duct is connected with the engine, and the temperature is high, which needs to be made of high temperature resistant material;

[0008] 4. The weight is too large: the traditional aircraft inlet duct is made of metal material, and the weight is large, which increases the overall weight of the aircraft, affects the fuel efficiency and flight performance.

[0009] Therefore, we propose a full composite double-sided inlet duct structure. Utility model content

[0010] In view of the defects of prior art, the utility model provides a full composite double-sided inlet duct structure, which solves the problem that the overall weight of the existing metal material product is large, which leads to the large overall weight of the aircraft and low fuel efficiency.

[0011] To achieve the above object, the utility model discloses a full composite double-sided air inlet channel structure, including two groups of arc distribution's air inlet channel, and the top fixed connection of two groups air inlet channel has the sliding oil tank connecting piece, the outer wall of air inlet channel is equipped with the partition frame connecting piece, and air inlet channel is fixedly connected in the body through the partition frame connecting piece,

[0012] One end of the air inlet channel is fixedly connected with a sliding oil tank connecting piece, the other end of the air inlet channel is provided with a lip upper portion and a lip lower portion, and the air inlet channel as a whole adopts a composite carbon fiber fabric material.

[0013] The composite carbon fiber fabric can provide good structural strength, meet various mechanical requirements during flight, has good high-temperature resistance, can maintain a long service life in harsh environments, and can reduce the overall weight of the aircraft and improve fuel efficiency compared to traditional metal materials.

[0014] As a preferred scheme of the utility model, the outer wall of the air inlet channel is glued with a rib through J-133C structural glue, and the rib is a foam filling structure.

[0015] The J-133C structural glue is composed of modified epoxy resin and modified amine curing agent, and is glued by room temperature curing and heating curing.

[0016] As a preferred scheme of the utility model, the lip upper portion is connected with the fuselage skin, the lip connecting piece and the tail end of the air inlet channel through rivets.

[0017] The rivet connection mode can ensure the stability during connection, and the setting of the lip connecting piece can ensure the assembly effect of the lip upper portion.

[0018] As a preferred scheme of the utility model, each component on the air inlet channel is formed by mold pressing.

[0019] The mold pressing of each part can ensure the accuracy of the part.

[0020] As a preferred scheme of the utility model, the air inlet channel is glued with the partition frame connecting piece through J-133C structural glue, and one side of the partition frame connecting piece is connected with the fuselage partition frame through a high lock nut.

[0021] The setting of the partition frame connecting piece facilitates the installation of the air inlet channel on the fuselage, and the structure is simple, convenient to disassemble and assemble, and convenient to maintain, solving the problems of complex structure and cumbersome subsequent maintenance operation.

[0022] As a preferred scheme of the utility model, the end of the air inlet and the sliding oil tank connecting piece are glued through J-133C structural glue.

[0023] The air inlet and the sliding oil tank connecting piece are connected, which is simple to maintain, saves time and cost, and is used for fixing and dispersing load.

[0024] The utility model provides a kind of full composite double-sided air inlet structure.It has the following beneficial effects:

[0025] 1, the full composite double-sided air inlet structure, through the setting of air inlet composite material carbon fiber fabric and the foam filling structure of partition frame connecting piece, good structural strength can be provided, various mechanical requirements in flight process can be met, simultaneously have good high temperature resistance, can keep long service life under severe environment, solve the problem that the overall weight of existing metal material product is relatively large, leading to the overall weight of aircraft is relatively large, improve fuel efficiency is low;

[0026] 2, the full composite double-sided air inlet structure, through the setting of partition frame connecting piece on air inlet, air inlet can be installed on the body by partition frame connecting piece, simultaneously, dismounting operation is simple, and structure is simple, light in weight, can be mass-produced, by solving the above technical problem, realize the goal of convenient maintenance, low manufacturing cost, high temperature resistance and light in weight. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 It is the structure schematic view of the utility model;

[0028] Fig. 2 It is the structure schematic view of the utility model side view;

[0029] Fig. 3 It is the structure schematic view of the utility model rear view.

[0030] In the drawing: 1, air inlet;2, sliding oil tank connecting piece;3, upper portion of lip;4, lower portion of lip;5, partition frame connecting piece;6, rib;7, lip connecting piece. DETAILED DESCRIPTION

[0031] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0032] Please refer to Figs. 1-3The utility model discloses an embodiment provides a technical scheme: a kind of full composite double-sided air inlet channel structure, including two groups of arc distribution air inlet channel 1, and the top of two groups air inlet channel 1 is fixedly connected with sliding oil tank connecting piece 2, air inlet channel 1 is equipped with the frame connecting piece 5 on outer wall, and air inlet channel 1 is fixedly connected in body through frame connecting piece 5;Air inlet channel 1 is fixedly connected with sliding oil tank connecting piece 2 in one end, and air inlet channel 1 is provided with lip upper portion 3 and lip lower portion 4 in another end, and air inlet channel 1 whole adopts composite material carbon fiber fabric material;

[0033] Wherein, composite carbon fiber fabric can provide good structural strength, can satisfy various mechanical requirements in flight process, also have good high temperature resistance, can keep longer service life under harsh environment, while air inlet channel 1 whole adopts composite material carbon fiber fabric, compared with traditional metal material, can reduce the overall weight of aircraft, improve fuel efficiency;

[0034] The full composite double-sided air inlet channel structure, through the setting of air inlet channel 1 composite material carbon fiber fabric and frame connecting piece 5 foam filling structure, can provide good structural strength, can satisfy various mechanical requirements in flight process, also have good high temperature resistance, can keep longer service life under harsh environment, solve the problem that the overall weight of existing metal material product is large, cause the overall weight of aircraft is large, improve fuel efficiency is low.

[0035] Embodiment 2:

[0036] The outer wall of air inlet channel 1 is glued with rib 6 through J-133C structural adhesive, and rib 6 is foam filling structure;Wherein, J-133C structural adhesive is composed of modified epoxy resin and modified amine curing agent, and is glued by room temperature curing and heating curing.

[0037] Lip upper portion 3 is connected with body skin, lip connecting piece 7 and tail end of air inlet channel 1 through rivet;Wherein, the stability when rivet riveting mode can guarantee its connection, and the setting of lip connecting piece 7 can guarantee the assembly effect of lip upper portion 3.

[0038] Each component on air inlet channel 1 is molded by molding;Wherein, the setting of each part molded by molding can guarantee the accuracy of the part.

[0039] Air inlet channel 1 is glued with frame connecting piece 5 through J-133C structural adhesive, and one side of frame connecting piece 5 is connected between body frame and high lock nut;Wherein, the setting of frame connecting piece 5 is convenient for installing air inlet channel 1 on body, and simple structure is suitable for convenient disassembly and assembly, so that the effect of subsequent convenient maintenance is achieved, solve the problem that existing structure is complex and subsequent maintenance operation is complicated.

[0040] The end of the air inlet channel 1 is glued to the oil tank connecting piece 2 through J-133C structural glue, wherein, through the connecting mode between the air inlet channel 1 and the oil tank connecting piece 2, maintenance is simple, time and cost are saved, and the connecting mode is used for fixing and dispersing load, and only the connecting fasteners between the connecting piece and the partition frame need to be removed during maintenance.

[0041] The full-composite double-sided air inlet channel structure is convenient to install the air inlet channel 1 on the fuselage through the partition frame connecting piece 5, simple to disassemble and assemble, simple in structure, light in weight, and capable of being mass-produced, and the technical problems are solved, so that the maintenance is convenient, the manufacturing cost is low, the high-temperature resistance is strong, and the weight is light.

[0042] The working principle and use process of the utility model are as follows: through the connecting mode between the air inlet channel 1 and the oil tank connecting piece 2, the strength and the convenience of disassembly and assembly can be ensured, meanwhile, the material structure of the air inlet channel 1 and the partition frame connecting piece 5 can provide good structural strength, can meet various mechanical requirements in the flight process, has good high-temperature resistance, can keep a long service life in a harsh environment, and solves the problems that the overall weight of the metal material product is large, the overall weight of the airplane is large, and the fuel efficiency is low.

[0043] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure mark in the claims should not be regarded as limiting the involved claims.

[0044] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can be combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A full composite double-sided inlet duct structure, characterized by: The application relates to an air inlet channel (1) which comprises two groups of arc-shaped air inlet channels (1), and the top ends of the two groups of air inlet channels (1) are fixedly connected with oil tank connecting pieces (2); the outer walls of the air inlet channels (1) are equipped with partition frame connecting pieces (5), and the air inlet channels (1) are fixedly connected to the fuselage through the partition frame connecting pieces (5). One end of the air inlet channel (1) is fixedly connected with the oil tank connecting piece (2), the other end of the air inlet channel (1) is provided with a lip upper part (3) and a lip lower part (4), and the air inlet channel (1) is integrally made of composite carbon fiber fabric material.

2. A full composite double-sided inlet duct structure according to claim 1, characterized in that: The outer wall of the air inlet channel (1) is glued with a rib (6) through J-133C structural glue, and the rib (6) is a foam filling structure.

3. A full composite double-sided inlet duct structure according to claim 1, wherein: The lip upper part (3) is connected with the fuselage skin, a lip connecting piece (7) and the tail end of the air inlet channel (1) through rivets.

4. A full composite double-sided inlet duct structure according to claim 1, wherein: Each component of the air inlet channel (1) is formed through die molding.

5. A full composite double-sided inlet duct structure according to claim 1, wherein: The air inlet channel (1) is glued with the partition frame connecting piece (5) through J-133C structural glue, and one side of the partition frame connecting piece (5) is connected with the fuselage partition frame through a high lock nut.

6. A full composite double-sided inlet duct structure according to claim 1, wherein: The end of the air inlet channel (1) and the oil tank connecting piece (2) are glued through J-133C structural glue.

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