CN218806623U

CN218806623U - Multipurpose full-size metal airplane model

Info

Publication number: CN218806623U
Application number: CN202222686317.8U
Authority: CN
Inventors: 朱前辉; 刘磊; 张�杰; 韩力全; 高玉伟
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-04-07
Anticipated expiration: 2032-10-12

Abstract

The application belongs to the field of aviation design, and particularly relates to a multipurpose full-size metal airplane model, which comprises a main keel beam, a plurality of longitudinal beams, a plurality of cross beams and an inclined beam, wherein the cross beams are connected between the plurality of adjacent longitudinal beams; the bulkheads are distributed on the outer side of the main keel beam along the aircraft course array, and the long girders are circumferentially arranged on the outer edges of the bulkheads; the axial direction of the stringer is consistent with the course; the skin is pasted on the outer sides of the partition frames and the stringers; the wing surface, the empennage and the undercarriage of the airplane are all connected with the main keel beam, so that the parts are quickly assembled and positioned, the design method is simple, the manufacturing and assembling are simple, and the design and manufacturing period and cost can be greatly reduced.

Description

Multipurpose full-size metal airplane model

Technical Field

The application belongs to the field of aviation design, and particularly relates to a multipurpose full-size metal airplane model.

Background

The airplane body for test testing generally requires higher authenticity of factors such as appearance, weight characteristics, electromagnetic characteristics and the like of a test model, but manufacturing the test model according to a real structure generally causes great increase of design and manufacturing period and cost.

For strategic camouflage airplane models, in order to facilitate manufacturing and save cost, wooden models or inflatable models are generally adopted, and when metal models are needed, the traditional method is difficult to simultaneously meet the requirements of both the reality of the appearance and the quick development of low cost.

Disclosure of Invention

In order to solve the above problems, the present application provides a multipurpose full-size metal airplane model, comprising:

the main keel beam comprises a plurality of longitudinal beams, a cross beam for connecting a plurality of adjacent longitudinal beams, and an oblique beam for connecting the intersection point between the longitudinal beams and the cross beam;

the bulkheads are distributed on the outer side of the main keel beam along the aircraft course array, and the long girders are circumferentially arranged on the outer edges of the bulkheads; the long purlin axial direction is consistent with the course;

the covering is attached to the outer sides of the partition frames and the stringers;

wherein, the wing surface, the empennage and the undercarriage of the airplane are all connected with the main keel beam.

Preferably, the upper side of the main keel beam is provided with a wing mounting joint connected with the wing surface, the rear end of the upper side of the main keel beam is provided with a tail mounting joint connected with the tail wing, the lower side of the main keel beam is provided with a nose landing gear mounting joint connected with the landing gear, and a seat is arranged in the middle of the main keel beam.

Preferably, the keel beam is provided with two hoisting joints at the upper side for hoisting.

Preferably, the cross section of the main keel beam is rectangular, and at least 4 longitudinal beams are distributed at four corner positions of the rectangular cross section.

Preferably, the front end of main keel beam is fixed with preceding counter weight module, and the counter weight installing track that distributes along the course is installed to main keel beam inboard, has a plurality of locating holes on the counter weight installing track, and counter weight installing track installs the balancing weight, and the balancing weight slides at counter weight installing track and carries on spacingly through pin and locating hole.

Preferably, clamping grooves are circumferentially distributed on the outer side of the stringer, and the stringer and the clamping grooves are positioned and assembled.

Preferably, the hoisting navigation frame is installed on the upper wall inside the main keel beam, and a hoisting navigation track is arranged on the hoisting navigation frame and used for hoisting and conveying goods.

The advantages of the present application include: the invention adopts the form of the main keel beam and the appearance wrapping to replace the general airplane shell structure bearing form, simplifies the partition frames, the rib plates and the purlins of the structure into the pure web plate form without the edge strips, and saves the links of mould tire preparation and part forming while ensuring the appearance accuracy. And the mortise-tenon type clamping grooves are designed at the intersection parts of the partition frame, the rib plates, the stringers and the like, so that an assembly positioning tool can be saved or simplified, the rapid assembly positioning of parts is realized, the design method is simple, the manufacturing and assembly are simple, and the design and manufacturing period and cost can be greatly reduced.

Drawings

FIG. 1 is a schematic cross-sectional view of a preferred embodiment of an airframe of the present application;

FIG. 2 is a schematic view of a preferred embodiment aircraft model main keel beam of the present application;

FIG. 3 is a schematic illustration of the connection and positioning of a fuselage bulkhead to a stringer according to a preferred embodiment of the present application;

FIG. 4 is a schematic view of a stringer positioning clip for assembly on a bulkhead of a preferred embodiment of the subject application;

FIG. 5 is a schematic view of a weight center of gravity adjustment module according to a preferred embodiment of the present application.

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 accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.

As shown in fig. 1 to 5, the main keel beam 1 comprises a plurality of longitudinal beams, a cross beam connecting a plurality of adjacent longitudinal beams, and an oblique beam connecting an intersection point between the longitudinal beams and the cross beam;

the bulkheads 2 are distributed outside the main keel beam 1 along the aircraft course array, and the long purlins 4 are circumferentially arranged on the outer edge of each bulkhead 2; the long purlin 4 is consistent with the course in the axial direction;

the skin is pasted on the outer sides of the partition frames 2 and the stringers 4;

wherein, the wing surface, the empennage and the landing gear of the airplane are all connected with the main keel beam 1.

Preferably, the main keel beam 1 has a wing installation joint 17 connected to the wing surface at the upper side thereof, the main keel beam 1 has a tail installation joint 18 connected to the tail at the upper rear end thereof, the main keel beam 1 has a nose landing gear installation joint connected to the landing gear at the lower side thereof, and the main keel beam 1 has a seat 13 at the middle thereof.

In some alternative embodiments, the keel beam 1 has two lifting joints 16 on the upper side for hoisting.

In some alternative embodiments, the cross section of the main keel beam 1 is rectangular, and the number of the longitudinal beams is at least 4, and the longitudinal beams are distributed at four corner positions of the rectangular cross section.

In some optional embodiments, the front end of the main keel beam 1 is fixed with a front counterweight module 11, the inner side of the main keel beam 1 is provided with a counterweight mounting rail 15 distributed along the course, the counterweight mounting rail 15 is provided with a plurality of positioning holes, the counterweight mounting rail 15 is provided with a counterweight block, and the counterweight block slides on the counterweight mounting rail 15 and is limited by a pin and the positioning holes.

In alternative embodiments, the stringers 4 have detents circumferentially distributed around the outside of the stringers 4, and the stringers 4 are positioned to fit into the detents.

In some optional embodiments, the hoisting crane frame 14 is installed on the upper wall inside the main keel beam 1, and the hoisting crane frame 14 is provided with hoisting crane rails for hoisting goods.

The main keel beam and the outer shape wrapping are adopted to replace a general airplane shell structure bearing form, the main keel beam is arranged in the airplane main body structure to serve as a bearing support of the whole model, and the outer shape wrapping, the wing surface and the undercarriage of the airplane body are all fixedly connected to the main keel beam, so that connection of all large parts is facilitated, and sufficient mechanical performance is guaranteed.

The appearance of the airplane is ensured by the partition frame, the purlin and the ribbed plate, the partition frame, the purlin and the ribbed plate are in a non-bending edge strip form only retaining the web, the parts are convenient to select flat plate materials and are processed by a linear cutting processing method, the method can ensure the accuracy of the appearance of the airplane, and therefore links of preparing a mold and forming the parts can be omitted.

Meanwhile, the clamping grooves similar to tenon-and-mortise structures are arranged at the intersection of the partition frame, the purlin and the ribbed plate, so that the parts which are intersected with each other can be simply, quickly and accurately clamped and positioned, convenience is provided for subsequent welding or other connecting processes, and the design and manufacturing period and cost are greatly simplified.

The main keel beam is convenient for connecting large parts such as an undercarriage, wings and an empennage, the frame structure is internally provided with a mounting and fixing interface of a test testing instrument, and a slide rail is arranged for adjusting the movement and mounting of a balancing weight for a weight center.

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.

Claims

1. A multipurpose full-size metal airplane model, comprising:

the main keel beam (1) comprises a plurality of longitudinal beams, transverse beams connected between the plurality of adjacent longitudinal beams, and oblique beams connected with intersection points between the longitudinal beams and the transverse beams;

the partition frames (2) are distributed on the outer side of the main keel beam (1) along the aircraft course array, and the long trusses (4) are circumferentially arranged on the outer edge of each partition frame (2); the axial direction of the stringer (4) is consistent with the course;

the skin is pasted on the outer sides of the partition frames (2) and the stringers (4);

wherein, the wing surface, the empennage and the undercarriage of the airplane are all connected with the main keel beam (1).

2. A multipurpose full size metal aircraft model according to claim 1, characterized in that the main keel beam (1) has wing mounting joints (17) on the upper side to connect with said wing surface, the main keel beam (1) has tail mounting joints (18) on the upper rear end to connect with said tail wing, the main keel beam (1) has nose landing gear mounting joints on the lower side to connect with said landing gear, and the main keel beam (1) has seats (13) in the middle.

3. A multipurpose full size metal aircraft model according to claim 1, characterized in that the keel beam (1) has two hoisting joints (16) on the upper side for hoisting.

4. A multipurpose full-size metal aircraft model according to claim 1, characterized in that the cross-section of the main keel beam (1) is rectangular, and said longitudinal beams are at least 4 and distributed at the four corners of the rectangular cross-section.

5. A multipurpose full-size metal airplane model according to claim 1, wherein a front counterweight module (11) is fixed at the front end of the main keel beam (1), counterweight mounting rails (15) distributed along the course direction are mounted on the inner side of the main keel beam (1), a plurality of positioning holes are formed in the counterweight mounting rails (15), and a counterweight block is mounted on the counterweight mounting rails (15) and slides on the counterweight mounting rails (15) and is limited by pins and the positioning holes.

6. A multi-purpose full size metal airplane model according to claim 1 wherein there are slots circumferentially distributed on the outside of stringer (4), stringer (4) being positioned and assembled with the slots.

7. A multipurpose full-size metal airplane model according to claim 1, characterized in that the inner upper wall of the main keel beam (1) is provided with a hoisting crane frame (14), and the hoisting crane frame (14) is provided with hoisting crane rails for hoisting goods.