Onboard equipment support shell, forming die and preparation method

Abstract

The application relates to an airborne equipment support shell, a forming die and a preparation method. The airborne equipment support shell comprises a shell body with a cavity with an open end, an inner recess is arranged on the end face of the shell body away from the opening of the cavity; an ear piece is arranged on the side wall of the shell body; a metal piece is embedded in the shell body, and the metal piece is provided with a prefabricated hole; the material of the shell body and the ear piece is carbon fiber composite material. The airborne equipment support shell of the application is prepared by one-time forming process, has large structural strength and light weight.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of airborne equipment, in particular to an airborne equipment support shell, a forming die and a preparation method. BACKGROUND

[0002] Airborne electronic equipment is one of the most important flight equipment of an airplane. Through the use of airborne electronic equipment, flight meteorological conditions, air conditions, ground building conditions and topography can be obtained, and various flight required data can be obtained.

[0003] The airborne electronic equipment is installed on the airplane through a support shell. The existing support shell generally adopts a metal structure. In order to realize structural weight reduction, a plurality of reinforcing ribs, weight reduction grooves or weight reduction holes are arranged, which leads to long processing time and high manufacturing cost. SUMMARY

[0004] Based on the above problems, the present application provides an airborne equipment support shell, a forming die and a preparation method. The weight of the airborne equipment support shell is reduced by using a composite material.

[0005] One embodiment of the present application provides an airborne equipment support shell, comprising: a shell body having a cavity with one end being open, an inner recess being arranged on the bottom surface of the cavity; an ear being arranged on the side wall of the shell body; a metal piece being embedded in the shell body, the metal piece being provided with a preformed hole; and the material of the shell body and the ear being carbon fiber composite material.

[0006] One embodiment of the present application provides a forming die of an airborne equipment support shell, comprising: a bottom die for supporting the inner wall of the cavity of the airborne equipment support shell; an outer shape pressurizing die for extrusion forming the outer side wall of the shell body; an inner shape pressurizing die for extrusion forming the inner side wall of the inner recess; and an upper die for extruding the outer shape pressurizing die, the inner shape pressurizing die and extrusion forming the end surface of the airborne equipment support shell.

[0007] According to some embodiments of the present application, the bottom die comprises: a base; a support portion arranged on the surface of the base, the diameter of the support portion being smaller than the diameter of the base, the support portion being used for supporting the inner wall of the cavity of the airborne equipment support shell; and the forming die further comprises a demolding ring, the demolding ring being sleeved on the support portion, and the demolding ring being in contact with the base.

[0008] According to some embodiments of the present application, the demolding ring and the base are detachably connected.

[0009] According to some embodiments of the present application, the outer sidewall of the outer shape pressing mold is frustoconical, and the large-diameter end of the outer shape pressing mold is closer to the cavity opening of the airborne equipment support shell than the small-diameter end of the outer shape pressing mold; the outer shape pressing mold comprises a plurality of first sub-modules, and the plurality of first sub-modules are spliced to form the outer shape pressing mold.

[0010] According to some embodiments of the present application, the inner sidewall of the inner shape pressing mold is frustoconical, and the small-diameter end of the inner sidewall of the inner shape pressing mold is closer to the cavity opening of the airborne equipment support shell than the large-diameter end of the inner sidewall of the inner shape pressing mold; the inner shape pressing mold comprises a plurality of second sub-modules and a plurality of third sub-modules, the second sub-modules and the third sub-modules are arranged at intervals, and the plurality of second sub-modules and the plurality of third sub-modules are spliced to form the inner shape pressing mold.

[0011] According to some embodiments of the present application, the upper mold has a pressing cavity, the inner sidewall of the pressing cavity is matched with the outer sidewall of the outer shape pressing mold, and the bottom surface of the pressing cavity is provided with a pressing block matched with the inner sidewall of the inner shape pressing mold.

[0012] One embodiment of the present application provides a method for manufacturing an airborne equipment support shell by using the above-mentioned forming mold, which comprises: laying a first material layer group on the bottom mold; arranging an ear piece preform at a preset position of the first material layer group; laying a second material layer group on the first material layer group; laying a third material layer group covering the ear piece preform and the second material layer group; laying a fourth material layer group at a preset position, and a metal piece is arranged in the fourth material layer group; arranging the outer shape pressing mold on the outside of the corresponding third material layer group of the outer sidewall of the shell, and arranging the inner shape pressing mold on the inside of the corresponding third material layer group of the inner sidewall of the inner recess; pressing the outer shape pressing mold and the inner shape pressing mold by using the upper mold, and heating the first material layer group, the second material layer group, the third material layer group, the fourth material layer group and the ear piece preform to solidify into the airborne equipment support shell.

[0013] According to some embodiments of the present application, the arranging of the ear piece preform at the preset position of the first material layer group comprises: supporting the ear piece preform by using a tooling.

[0014] According to some embodiments of the present application, the pressing of the upper mold comprises: a pre-pressing stage, in which the temperature is raised at a rate of ≤2℃ / min to 80℃, and the temperature is kept at 80±5℃ for 30min, and the pre-pressing stage pressure is 2MPa; a pressure-keeping stage, in which the temperature is raised at a rate of ≤3℃ / min from 80℃ to 125℃, and the temperature is kept at 125±5℃ for 120min, and the pressure-keeping stage pressure is 5MPa.

[0015] The airborne equipment support shell of the present application is integrally formed by carbon fiber composite material, has good integrity, light weight, high structural strength, and does not need additional surface treatment, thereby reducing cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art according to these drawings without departing from the scope of the present application.

[0017] Figure 1 is a schematic diagram of the airborne equipment support shell of the present application embodiment;

[0018] Figure 2 is a schematic diagram of the metal part of the present application embodiment;

[0019] Figure 3 is a schematic diagram of the molding die of the present application embodiment;

[0020] Figure 4 is a schematic diagram of the bottom die of the present application embodiment;

[0021] Figure 5 is a schematic diagram of the outer shape press die of the present application embodiment;

[0022] Figure 6 is a state change diagram of the outer shape press die molding process of the present application embodiment;

[0023] Figure 7 is a schematic diagram of the inner shape press die of the present application embodiment;

[0024] Figure 8 is a state change diagram of the inner shape press die molding process of the present application embodiment;

[0025] Figure 9 is a schematic diagram of the upper die of the present application embodiment;

[0026] Figure 10 is a schematic diagram of the support shell molding material layer of the present application embodiment;

[0027] Figure 11 is a schematic diagram of the tooling of the present application embodiment. DETAILED DESCRIPTION

[0028] With reference to the drawings of the embodiments of the present application, the technical solutions of the present application are clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The existing airborne equipment support shell adopts a metal structure, for example, an aluminum alloy material, which is heavy. In order to realize structural weight reduction, reinforcing ribs, weight reduction grooves or weight reduction holes need to be arranged, the processing time is long, and the manufacturing cost is high. On the other hand, the salt mist resistance and corrosion resistance of the metal material are poor, and surface treatment and plating need to be performed to improve the corrosion resistance, further increasing the manufacturing process and manufacturing cost.

[0030] As shown in Figure 1 and Figure 2 , the embodiment of the present application provides an airborne equipment support shell 100 (referred to as support shell 100 for short), and an airborne equipment, such as an airborne photoelectric telescope, is arranged on an airplane through the airborne equipment support shell 100. The support shell 100 includes a shell body 110, and in the embodiment, the shell body 110 has a cylindrical shape. The inside of the shell body 110 is a cavity 120 with one end open, and the end face of the shell body 110 away from the opening of the cavity 120 is provided with an inner recess 130. The inner recess 130 forms a groove on the end face of the shell body 110 away from the opening of the cavity 120, and forms a protruding structure on the bottom surface of the cavity 120. The inner recess 130 is provided with a first through hole, and the first through hole is in communication with the cavity 120. Optionally, the inner recess 130 is located at the center of the bottom surface of the cavity 120.

[0031] The support shell 100 further includes an ear piece 140, which is arranged on the side wall of the shell body 110, and the ear piece 140 is provided with a connecting structure, which can be a second through hole, so as to facilitate the connection of the ear piece 140 with the airplane. Optionally, the number of ear pieces 140 is multiple, and the multiple ear pieces 140 are circumferentially distributed around the axis of the shell body 110. The multiple in the embodiment includes two.

[0032] The support shell 100 further includes a metal piece 150, which is made of metal material, and the metal piece 150 is provided with a prefabricated hole, which is optionally a threaded hole. The metal piece 150 is embedded in the shell body 110, for example, the metal piece 150 is located on the end face of the shell body 110 close to the opening of the cavity 120, and the prefabricated hole of the metal piece 150 serves as a connecting hole for connecting the support shell 100 with the airborne equipment. Optionally, the metal piece 150 is also arranged on the inner recess 130.

[0033] The material of the shell 110 and the ear piece 140 is carbon fiber composite material. The connecting holes on the support shell 100 are arranged on the prefabricated metal piece 150, and the metal piece 150 is embedded in the shell 110. The support shell 100 is integrally formed by carbon fiber composite material, and has good integrity. The use of carbon fiber composite material makes the support shell 100 light in weight and high in structural strength. The support shell 100 does not need additional surface treatment, and can significantly improve the corrosion resistance and salt mist resistance of the support shell 100.

[0034] As shown in Figure 3 , the embodiment of the present application provides a forming mold 200 for preparing the support shell 100 described above. The forming mold 200 comprises a bottom die 1, an outer shape pressing die 2, an inner shape pressing die 3 and an upper die 4. The bottom die 1 provides support for the outer shape pressing die 2, the inner shape pressing die 3 and the upper die 4.

[0035] When the support shell 100 is prepared, the forming material is laid on the bottom die 1, and the bottom die 1 supports the inner wall of the cavity 120 corresponding to the forming material, so as to form the inner wall of the cavity 120 of the support shell 100. The outer shape pressing die 2 contacts the forming material corresponding to the outer side wall of the shell 110, and extrudes the outer side wall of the shell. The inner shape pressing die 3 contacts the forming material corresponding to the inner recess, and extrudes the inner side wall of the inner recess 130, which refers to the groove wall of the groove formed by the inner recess 130. The upper die 4 can extrude the outer shape pressing die 2 and the inner shape pressing die 3, and the upper die 4 can also contact the end face of the support shell 100 away from the cavity opening, so as to extrude the end face of the support shell 100 away from the cavity opening.

[0036] The forming mold 200 of the present application can make the support shell 100 once pressurized and solidified, and the support shell 100 has good integrity, which simplifies the preparation process of the support shell 100.

[0037] As shown in Figure 4 , in some embodiments, the bottom die 1 comprises a base 11 and a support part 12. The support part 12 is arranged on the upper surface of the base 11, and the diameter of the support part 12 is smaller than that of the base 11. The support part 12 is used to support the inner wall of the cavity 120 of the support shell 100. The top surface of the support part 12 is provided with a groove 121, which is matched with the inner recess 130 of the support shell 100.

[0038] As shown in Figure 3 , the forming mold 200 further comprises a demolding ring 5, which is annular. The demolding ring 5 is sleeved on the support part 12, and the lower surface of the demolding ring 5 is in contact with the upper surface of the base 11. When the support shell 100 is formed, the end face of the support shell 100 close to the cavity opening is in contact with the demolding ring 5. After the support shell 100 is formed, the support shell 100 is removed from the bottom die 1 by lifting the demolding ring 5, which facilitates the demolding of the support shell 100.

[0039] In some embodiments, the demolding ring 5 is detachably connected to the base 11. For example, pin holes are provided in both the demolding ring 5 and the base 11, and a positioning pin is inserted into the pin holes of the demolding ring 5 and the base 11 to improve the positioning accuracy of the demolding ring 5, thereby improving the molding accuracy of the support shell 100.

[0040] As shown in FIGS. 1 and 2, in some embodiments, the outer side wall of the outer shape pressing mold 2 is frustoconical, wherein the large-diameter end of the outer shape pressing mold 2 is closer to the cavity opening of the support shell 100 than the small-diameter end of the outer shape pressing mold 2. Figure 5 Figure 6 As shown in FIGS. 1 and 2, in some embodiments, the outer side wall of the outer shape pressing mold 2 is frustoconical, wherein the large-diameter end of the outer shape pressing mold 2 is closer to the cavity opening of the support shell 100 than the small-diameter end of the outer shape pressing mold 2.

[0041] The outer shape pressing mold 2 is divided into a plurality of first sub-modules 22, and the plurality of first sub-modules 22 can be spliced to form the outer shape pressing mold 2. In this embodiment, the outer shape pressing mold 2 is divided into three first sub-modules 22 by three vertical cutting surfaces.

[0042] When the molding material of the support shell 100 is laid on the bottom film and not subjected to extrusion, the size of the molding material is larger than the size of the support shell 100 after molding. The plurality of first sub-modules 22 are respectively placed on the outside of the molding material, the first sub-modules 22 are in contact with the molding material, and gaps exist between adjacent first sub-modules 22. During the molding process, the upper mold 4 applies pressure to the first sub-modules 22 from above. Due to the inclined outer side wall of the outer shape pressing mold 2, the first sub-modules 22 are displaced along the radial direction of the outer shape pressing mold 2, the plurality of first sub-modules 22 move closer to each other, the first sub-modules 22 extrude the molding material, and the adjacent first sub-modules 22 are in contact with each other to form the outer side wall of the shell body 110.

[0043] Optionally, the inner side wall of the outer shape pressing mold 2 is provided with a receiving groove 23 matched with the ear preform, and the ear preform is located in the receiving groove 23 during the molding of the support shell 100.

[0044] As shown in FIGS. 1 and 2, in some embodiments, the inner side wall 31 of the inner shape pressing mold 3 is frustoconical as a whole, and the small-diameter end of the inner side wall 31 of the inner shape pressing mold is closer to the cavity opening of the support shell 100 than the large-diameter end of the inner side wall 31 of the inner shape pressing mold. The outer side wall of the inner shape pressing mold 3 is cylindrical. Figure 7 Figure 8 As shown in FIGS. 1 and 2, in some embodiments, the inner side wall 31 of the inner shape pressing mold 3 is frustoconical as a whole, and the small-diameter end of the inner side wall 31 of the inner shape pressing mold is closer to the cavity opening of the support shell 100 than the large-diameter end of the inner side wall 31 of the inner shape pressing mold. The outer side wall of the inner shape pressing mold 3 is cylindrical.

[0045] ​​The inner shape pressing die 3 comprises a plurality of second sub-modules 32 and a plurality of third sub-modules 33, the second sub-modules 32 and the third sub-modules 33 are arranged at intervals, and the plurality of second sub-modules 32 and the plurality of third sub-modules 33 are spliced into the inner shape pressing die 3. In the embodiment, the inner shape pressing die 3 is divided into three second sub-modules 32 and three third sub-modules 33, and the volume of the second sub-module 32 is greater than the volume of the third sub-module 33. The dividing surface between the second sub-module 32 and the adjacent third sub-module 33 is a bevel, so that the curvature of the bottom edge of the inner side wall of the third sub-module 33 is greater than the curvature of the top edge of the inner side wall of the third sub-module 33.

[0046] When the forming material for supporting the shell 100 is laid on the bottom film and is not subjected to extrusion, the groove formed by the forming material corresponding to the inner recess 130 has a size smaller than that of the groove formed by the inner recess 130 after forming. When the supporting shell 100 is formed, the plurality of second sub-modules 32 and the plurality of third sub-modules 33 of the inner shape pressing die 3 are all placed in the groove formed by the forming material, the second sub-module 32 is in contact with the forming material, and the third sub-module 33 is close to the axis of the inner shape pressing die 3 relative to the second sub-module 32. The upper die 4 exerts pressure on the second sub-module 32 and the third sub-module 33 from above, the second sub-module 32 extrudes the contact forming material, the third sub-module 33 moves radially to form a complete circle with the second sub-module 32, the third sub-module 33 extrudes the forming material, and the second sub-module 32 and the third sub-module 33 jointly extrude the inner side wall of the inner recess 130.

[0047] As shown in Figure 9 In some embodiments, the upper die 4 has a pressing cavity 41, the inner side wall of the pressing cavity 41 is matched with the outer side wall 21 of the outer shape pressing die 2, and during the forming process of the supporting shell 100, the upper die 4 moves downward, and the inner side wall of the pressing cavity 41 exerts pressure on the outer side wall of the outer shape pressing die 2. The bottom surface of the pressing cavity 41 is provided with a pressing block 42, the pressing block 42 is matched with the inner side wall 31 of the inner shape pressing die 3, and during the forming process of the supporting shell 100, the pressing block 42 exerts pressure on the inner side wall 31 of the inner shape pressing die 3.

[0048] As shown in Figure 10 The method for preparing the supporting shell 100 by using the above-mentioned forming die 200 comprises the following steps:

[0049] 1. The ear piece 140 is made of carbon fiber composite material to form an ear piece preform 350.

[0050] 2. Clean the mold: wipe the surface of the forming die 200 with a clean cloth dipped in cleaning liquid (such as acetone) to remove surface stains, ensure that the surface of the forming die 200 is smooth, free of oil stains and impurities, and place the film for at least half an hour before use.

[0051] 3. Install the demolding ring 5 on the bottom die 1.

[0052] 4、The first material layer group 310 comprises multiple layers of carbon fiber prepreg. The carbon fiber prepreg is laid on the bottom mold 1 layer by layer according to the preset number of layers, vacuumized and attached to form the first material layer group 310. The carbon fiber prepreg is formed by dipping resin on carbon fiber material. The carbon fiber prepreg is cured to form carbon fiber composite material.

[0053] 5、The ear piece preform 350 is arranged at a preset position of the first material layer group 310. The ear piece preform 350 comprises an ear piece part and a connecting part. The ear piece part is arranged on the connecting part. After forming, the ear piece part forms an ear piece and the connecting part serves as a part of the shell 110.

[0054] 6、The second material layer group 320 comprises multiple layers of carbon fiber prepreg. The carbon fiber prepreg is laid on the first material layer group 310 layer by layer according to the preset number of layers, vacuumized and attached to form the second material layer group 320.

[0055] 7、The third material layer group 330 comprises multiple layers of carbon fiber prepreg. The carbon fiber prepreg of the third material layer group 330 is laid layer by layer, vacuumized and attached to form the third material layer group 330. The third material layer group 330 covers the connecting part of the ear piece preform 350 and the second material layer group 320.

[0056] 8、The fourth material layer group 340 is arranged at a preset position. The fourth material layer group 340 comprises multiple layers of carbon fiber prepreg. The fourth material layer group 340 covers the metal part 150. For example, the fourth material layer group 340 is arranged on the first material layer group 310 to form a connecting hole on the end face of the support shell 100 close to the cavity opening. And / or the fourth material layer group 340 is arranged on the end of the first material layer group 310, the second material layer group 320 and the third material layer group 330 to form a connecting hole on the inner recess 130.

[0057] 9、The outer shape pressing mold 2 is arranged outside the third material layer group 330 corresponding to the outer side wall of the shell 110. The inner shape pressing mold 3 is arranged inside the third material layer group 330 corresponding to the inner side wall of the inner recess 130.

[0058] 10、The upper mold 4 presses the outer shape pressing mold 2 and the inner shape pressing mold 3. The first material layer group 310, the second material layer group 320, the third material layer group 330, the fourth material layer group 340 and the ear piece preform 350 are heated by the heating device. The first material layer group 310, the second material layer group 320, the third material layer group 330, the fourth material layer group 340 and the ear piece preform 350 are cured by heating and pressing to form the support shell 100. The heating device can be an existing heating device.

[0059] 11、The support shell 100 is demolded and trimmed.

[0060] As Figure 11As shown, the forming mold 200 further comprises a tool 6, and in step 5, the ear preform 350 is supported by the tool 5, so that the ear preform 350 is arranged at the preset position of the first material layer group 310.

[0061] Optionally, the top surface of the tool 6 is provided with a third through hole 61, and the third through hole 61 is used for connecting with the ear preform 350.

[0062] In step 10, the pressurization of the upper mold is divided into two stages: a pre-pressing stage and a pressure maintaining stage. In the pre-pressing stage, the forming mold is heated to 80℃ at a heating rate of ≤2℃ / min, and is kept at 80±5℃ for 30min, and the pre-pressing stage pressure is 2MPa. In the pressure maintaining stage, the forming mold is heated from 80℃ to 125℃ at a heating rate of ≤3℃ / min, and is kept at 125±5℃ for 120min, and the pressure maintaining stage pressure is 5MPa.

[0063] Compared with the metal structure support shell, the support shell of the application is formed by carbon fiber composite material once, the structural strength is increased by about 1 times or more, the weight is reduced by about 35%, the support shell of the application does not need to be surface treated, and the manufacturing process and cost are saved.

[0064] The above has introduced the embodiments of the application in detail. In this paper, specific examples are applied to explain the principles and implementation modes of the application. The above embodiment description is only used to help understand the technical solutions and core ideas of the application. Therefore, the changes or deformations made by the person skilled in the art according to the ideas of the application, based on the specific implementation modes and application scope of the application, all belong to the protection scope of the application. In summary, the content of the specification should not be understood as a limitation of the application.

Claims

1. A forming mold for an airborne equipment support case, characterized by, The airborne equipment support shell comprises: a shell body having a cavity with an open end, the shell body being provided with an inner recess on the end face away from the opening of the cavity; an ear piece provided on the side wall of the shell body; a metal piece embedded in the shell body, the metal piece being provided with a preformed hole, the metal piece being located on the end face of the shell body close to the opening of the cavity and the inner recess, the preformed hole of the metal piece serving as a connecting hole for connecting the support shell with the airborne equipment; the shell body and the ear piece are made of carbon fiber composite material; the forming mold comprises: a bottom die for supporting the inner wall of the cavity of the airborne equipment support shell; an outer shape pressing die for extrusion forming the outer side wall of the shell body; an inner shape pressing die for extrusion forming the inner side wall of the inner recess; an upper die for pressing the outer shape pressing die, the inner shape pressing die and the end face of the airborne equipment support shell; wherein the outer side wall of the outer shape pressing die is in the shape of a circular truncated cone, the large-diameter end of the outer shape pressing die being closer to the opening of the cavity of the airborne equipment support shell than the small-diameter end of the outer shape pressing die; the outer shape pressing die comprises a plurality of first sub-modules, and the plurality of first sub-modules are spliced to form the outer shape pressing die; the inner side wall of the inner shape pressing die is in the shape of a circular truncated cone, the small-diameter end of the inner side wall of the inner shape pressing die being closer to the opening of the cavity of the airborne equipment support shell than the large-diameter end of the inner side wall of the inner shape pressing die; the inner shape pressing die comprises a plurality of second sub-modules and a plurality of third sub-modules, the second sub-modules and the third sub-modules are arranged in an interval, the plurality of second sub-modules and the plurality of third sub-modules are spliced to form the inner shape pressing die, and the partition surface between the second sub-module and the adjacent third sub-module is in the shape of an inclined surface, so that the curvature of the bottom edge of the inner side wall of the third sub-module is greater than the curvature of the top edge of the inner side wall of the third sub-module.

2. The forming mold of claim 1, wherein The bottom die comprises: a base; a support part provided on the surface of the base, the diameter of the support part being smaller than the diameter of the base, and the support part being used for supporting the inner wall of the cavity of the airborne equipment support shell; the forming mold further comprises a demolding ring, the demolding ring being sleeved on the support part, and the demolding ring being in contact with the base.

3. The forming mold of claim 2, wherein The demolding ring and the base are detachably connected.

4. The forming mold of claim 1, wherein The upper die has a pressing cavity, the inner side wall of the pressing cavity being matched with the outer side wall of the outer shape pressing die, and the bottom surface of the pressing cavity being provided with a pressing block matched with the inner side wall of the inner shape pressing die.

5. A method of producing an aircraft equipment support case using the molding die according to any one of claims 1 to 4, characterized by, The method comprises: laying a first material layer group on the bottom die; arranging an ear piece preform at a predetermined position of the first material layer group; laying a second material layer group on the first material layer group; laying a third material layer group covering the ear piece preform and the second material layer group; laying a fourth material layer group at a predetermined position, and a metal piece is arranged on the fourth material layer group; arranging the outer shape pressing die on the outer side wall of the shell body corresponding to the outer side of the third material layer group, and arranging the inner shape pressing die on the inner side wall of the inner recess corresponding to the inner side of the third material layer group. The upper die pressurizes the outer shape pressurizing die and the inner shape pressurizing die, and heats the first material layer group, the second material layer group, the third material layer group, the fourth material layer group and the ear piece preform to solidify into the airborne equipment support shell.

6. The method of making an onboard equipment support shell of claim 5, wherein, The ear piece preform is arranged at the preset position of the first material layer group by a tool.

7. The method of making an onboard equipment support shell of claim 5, wherein, The pressurization of the upper die comprises: The pre-pressing stage is to increase the temperature to 80 DEG C at a temperature increasing rate of ≤2 DEG C / min, and keep the temperature at 80±5 DEG C for 30 min, and the pre-pressing stage pressure is 2 MPa; The pressure keeping stage is to increase the temperature from 80 DEG C to 125 DEG C at a temperature increasing rate of ≤3 DEG C / min, and keep the temperature at 125±5 DEG C for 120 min, and the pressure keeping stage pressure is 5 MPa.

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