A high-resolution space optical camera carbon fiber six-leaf truss support structure

Abstract

The application discloses a high-resolution space optical camera carbon fiber six-leaf truss support structure, which comprises oppositely arranged secondary mirror embedded parts and truss rings; a bottom connecting assembly fixed on the truss rings, the secondary mirror embedded parts and the bottom connecting assembly all have connecting structures; and a support assembly connected between the secondary mirror embedded parts and the bottom connecting assembly, the upper and lower ends of the support assembly are connected to the secondary mirror embedded parts and the bottom connecting assembly respectively. The whole structure of the application adopts titanium alloy embedded parts combined with carbon fiber truss rods and truss rings, compared with a three-rod truss support structure, the whole machine frequency and the relative position precision between the primary mirror and the secondary mirror are improved. The integrated design of the secondary mirror embedded parts and the support rod joints reduces the assembly difficulty of the truss assembly, and meets the batch production demand of the high-resolution space optical camera. Through optimization of the layering sequence of the carbon fiber composite material, the space camera has excellent thermal stability, and the mass of the camera support structure is reduced.

Description

Technical Field

[0001] This invention relates to the field of space remote sensing technology, and in particular to a carbon fiber six-leaf truss support structure for a high-resolution space optical camera. Background Technology

[0002] Coaxial optical systems are widely used in high-resolution space optical cameras with large apertures and long focal lengths. These systems typically have long focal lengths, resulting in significant distances between the primary and secondary mirrors. The relative positional accuracy of optical elements is easily affected by the mechanical environment, thus impacting the camera's image quality. Therefore, the secondary mirror support structure must possess strong anti-interference capabilities, low manufacturing and assembly difficulty, and high stability. The main support structure types for space optical cameras include thin-walled cylindrical, three-bar, and truss types.

[0003] In practical applications, thin-walled cylindrical lenses are rarely used in optical cameras with large primary lens diameters and long focal lengths due to their low weight reduction and high thermal power consumption. Although three-bar lenses are highly lightweight, the cross-sectional area of ​​the support rods needs to be increased to improve bending and torsional resistance, which increases the obstruction ratio, causing a decrease in the optical system transfer function and affecting image quality.

[0004] Based on the above-mentioned technical problems, those skilled in the art urgently need to develop a carbon fiber six-leaf truss support structure for high-resolution space optical cameras that can effectively improve the overall frequency and the relative positional accuracy between the primary and secondary mirrors, reduce assembly difficulty, and meet the mass production requirements of high-resolution space optical cameras. Summary of the Invention

[0005] The purpose of this invention is to provide a carbon fiber six-leaf truss support structure for a high-resolution space optical camera that effectively improves the overall frequency and the relative positional accuracy between the primary and secondary mirrors, reduces assembly difficulty, and meets the mass production requirements of high-resolution space optical cameras.

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

[0007] The present invention provides a carbon fiber six-leaf truss support structure for a high-resolution space optical camera, the support structure comprising:

[0008] Relatively arranged secondary mirror embedded parts and truss rings; and

[0009] A bottom connecting assembly fixed to the truss ring, both the secondary mirror embedded part and the bottom connecting assembly have a connecting structure;

[0010] The support structure also includes:

[0011] A support assembly is connected between the secondary mirror embedding and the bottom connecting assembly, with its upper and lower ends respectively connected to the secondary mirror embedding and the bottom connecting assembly.

[0012] Furthermore, the secondary mirror embedding part is provided with three sets of cylindrical hollow upper flange interfaces at 90° to the side where it is located, and the three sets of upper flange interfaces are distributed at equal angles of 120°.

[0013] Furthermore, the bottom connecting assembly includes a first truss base embedded part, a second truss base embedded part, and a third truss base embedded part. The first truss base embedded part, the second truss base embedded part, and the third truss base embedded part are each provided with a cylindrical hollow lower flange interface at 90° to their respective side. The three sets of lower flange interfaces of the first truss base embedded part, the second truss base embedded part, and the third truss base embedded part are staggered at 60° with the three sets of lower flange interfaces of the secondary mirror embedded part.

[0014] Furthermore, the support assembly includes a first support rod, a second support rod, a third support rod, a fourth support rod, a fifth support rod, and a sixth support rod. Each support rod is a hollow cylindrical rod structure made of carbon fiber composite material. The hollow cylindrical inner hole of each support rod is respectively fitted onto the upper flange interface and the lower flange interface, fixed by adhesive, and reinforced with screws.

[0015] Furthermore, the upper ends of the first support rod and the sixth support rod are connected to the same set of upper flange interfaces after being fitted together; the upper ends of the second support rod and the third support rod are connected to the same set of upper flange interfaces after being fitted together; and the upper ends of the fourth support rod and the fifth support rod are connected to the same set of upper flange interfaces after being fitted together.

[0016] The lower ends of the first and second support rods are connected to the lower flange interface on the embedded part of the first truss base after being fitted together. The lower ends of the third and fourth support rods are connected to the lower flange interface on the embedded part of the second truss base after being fitted together. The lower ends of the fifth and sixth support rods are connected to the lower flange interface on the embedded part of the third truss base after being fitted together.

[0017] Preferably, the first truss base embedded part, the second truss base embedded part, and the third truss base embedded part are fitted with the interface on the truss ring and then fixed with adhesive and reinforced with screws, and the truss ring is made of carbon fiber composite material.

[0018] Preferably, the secondary mirror embedded part, the first truss base embedded part, the second truss base embedded part, and the third truss base embedded part are all made of titanium alloy.

[0019] In the above technical solution, the carbon fiber six-leaf truss support structure for a high-resolution space optical camera provided by the present invention has the following beneficial effects:

[0020] This invention discloses a carbon fiber six-leaf truss support structure for a high-resolution space optical camera. The overall structure utilizes titanium alloy embedded parts combined with carbon fiber truss rods and truss rings, improving the overall camera frequency and the relative positional accuracy between the primary and secondary mirrors compared to a three-bar truss support structure. The integrated design of the secondary mirror embedded parts and the support rod joints reduces the difficulty of truss assembly, meeting the mass production requirements of high-resolution space optical cameras. By optimizing the layup sequence of the carbon fiber composite material, a near-zero expansion layup design is achieved, giving the space camera excellent thermal stability while reducing the mass of the camera support structure. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of a carbon fiber six-leaf truss support structure for a high-resolution space optical camera, provided in an embodiment of the present invention.

[0023] Figure 2 A top view of a carbon fiber six-leaf truss support structure for a high-resolution space optical camera provided in an embodiment of the present invention;

[0024] Figure 3 This is a front view of a carbon fiber six-leaf truss support structure for a high-resolution spatial optical camera, provided as an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Secondary mirror embedded parts; 2. Truss ring; 3. Bottom connection assembly; 4. Support assembly;

[0027] 301. Embedded part of the first truss base; 302. Embedded part of the second truss base; 303. Embedded part of the third truss base;

[0028] 401. First support rod; 402. Second support rod; 403. Third support rod; 404. Fourth support rod; 405. Fifth support rod; 406. Sixth support rod. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0030] See Figures 1-3 As shown;

[0031] The present invention provides a carbon fiber six-leaf truss support structure for a high-resolution space optical camera, the support structure comprising:

[0032] The secondary mirror embedded part 1 and the truss ring 2 are arranged opposite to each other; and

[0033] The bottom connecting assembly 3 is fixed to the truss ring 2, and both the secondary mirror embedded part 1 and the bottom connecting assembly 3 have a connecting structure;

[0034] The support structure also includes:

[0035] A support component 4 is connected between the secondary mirror embedding part 1 and the bottom connecting component 3, with its upper and lower ends respectively connected to the secondary mirror embedding part 1 and the bottom connecting component 3.

[0036] As a further description of this embodiment, the secondary mirror embedded part 1 is provided with three sets of cylindrical hollow upper flange interfaces at 90° to the side where it is located, and the three sets of upper flange interfaces are distributed at an equal angle of 120°.

[0037] As a further description of this embodiment, the bottom connecting component 3 includes a first truss base embedded part 301, a second truss base embedded part 302, and a third truss base embedded part 303. The first truss base embedded part 301, the second truss base embedded part 302, and the third truss base embedded part 303 are respectively provided with a cylindrical hollow lower flange interface at 90° to the side where they are located. The first truss base embedded part 301, the second truss base embedded part 302, and the third truss base embedded part 303 are staggered with the three sets of lower flange interfaces of the secondary mirror embedded part 1 at 60°.

[0038] As a further description of this embodiment, the support assembly 4 includes a first support rod 401, a second support rod 402, a third support rod 403, a fourth support rod 404, a fifth support rod 405, and a sixth support rod 406. Each support rod is a hollow cylindrical rod structure and is made of carbon fiber composite material. The hollow cylindrical inner hole of each support rod is respectively fitted onto the upper flange interface and the lower flange interface, fixed by adhesive, and reinforced with screws.

[0039] As a further description of this embodiment, the upper ends of the first support rod 401 and the sixth support rod 406 are connected to the same set of upper flange interfaces after being fitted together; the upper ends of the second support rod 402 and the third support rod 403 are connected to the same set of upper flange interfaces after being fitted together; and the upper ends of the fourth support rod 404 and the fifth support rod 405 are connected to the same set of upper flange interfaces after being fitted together.

[0040] The lower ends of the first support rod 401 and the second support rod 402 are connected to the lower flange interface on the first truss base embedded part 301 after being fitted together. The lower ends of the third support rod 403 and the fourth support rod 404 are connected to the lower flange interface on the second truss base embedded part 302 after being fitted together. The lower ends of the fifth support rod 405 and the sixth support rod 406 are connected to the lower flange interface on the third truss base embedded part 303 after being fitted together.

[0041] As a preferred technical solution in this embodiment, the first truss base embedded part 301, the second truss base embedded part 302 and the third truss base embedded part 303 are fitted with the interface on the truss ring 2 and then glued and reinforced with screws. The truss ring 2 is made of carbon fiber composite material.

[0042] As a preferred technical solution in this embodiment, the secondary mirror embedded part 1, the first truss base embedded part 301, the second truss base embedded part 302 and the third truss base embedded part 303 are all made of titanium alloy.

[0043] Working principle description: The high-resolution space optical camera six-leaf truss support structure adopts six hollow cylindrical support rods, a secondary mirror embedded part 1 with a double flange interface, three truss base embedded parts, and a truss ring 2. The three truss base embedded parts are connected to the truss ring 2 to ensure the accuracy of the bottom mounting surface of the entire support structure. The six support rods realize the connection between the secondary mirror embedded part 1 and the truss base embedded parts, forming a six-leaf truss support structure.

[0044] In the above technical solution, the carbon fiber six-leaf truss support structure for a high-resolution space optical camera provided by the present invention has the following beneficial effects:

[0045] This invention discloses a carbon fiber six-leaf truss support structure for a high-resolution space optical camera. The overall structure utilizes titanium alloy embedded parts combined with carbon fiber truss rods and truss rings, improving the overall camera frequency and the relative positional accuracy between the primary and secondary mirrors compared to a three-bar truss support structure. The integrated design of the secondary mirror embedded parts and the support rod joints reduces the difficulty of truss assembly, meeting the mass production requirements of high-resolution space optical cameras. By optimizing the layup sequence of the carbon fiber composite material, a near-zero expansion layup design is achieved, giving the space camera excellent thermal stability while reducing the mass of the camera support structure.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A carbon fiber six-leaf truss support structure for a high-resolution space optical camera, characterized in that, The support structure includes: The secondary mirror embedded part (1) and the truss ring (2) are arranged opposite to each other; and The bottom connecting assembly (3) is fixed on the truss ring (2), and both the secondary mirror embedded part (1) and the bottom connecting assembly (3) have a connecting structure; The support structure also includes: A support component (4) is connected between the secondary mirror embedding part (1) and the bottom connecting component (3), with the upper and lower ends of the support component (4) respectively connected to the secondary mirror embedding part (1) and the bottom connecting component (3). The secondary mirror embedded part (1) is provided with three sets of cylindrical hollow upper flange interfaces that are 90° to the side where they are located, and the three sets of upper flange interfaces are distributed at an equal angle of 120°. The bottom connecting assembly (3) includes a first truss base embedded part (301), a second truss base embedded part (302), and a third truss base embedded part (303). The first truss base embedded part (301), the second truss base embedded part (302), and the third truss base embedded part (303) are respectively provided with a cylindrical hollow lower flange interface at 90° to the side where they are located. The first truss base embedded part (301), the second truss base embedded part (302), and the third truss base embedded part (303) are staggered with the three sets of lower flange interfaces of the secondary mirror embedded part (1) at 60°.

2. The carbon fiber six-leaf truss support structure for a high-resolution space optical camera according to claim 1, characterized in that, The support assembly (4) includes a first support rod (401), a second support rod (402), a third support rod (403), a fourth support rod (404), a fifth support rod (405), and a sixth support rod (406). Each support rod is a hollow cylindrical rod structure and is made of carbon fiber composite material. The hollow cylindrical inner hole of each support rod is respectively fitted onto the upper flange interface and the lower flange interface, fixed by adhesive, and reinforced with screws.

3. The carbon fiber six-leaf truss support structure for a high-resolution space optical camera according to claim 2, characterized in that, The upper ends of the first support rod (401) and the sixth support rod (406) are connected to the same set of upper flange interfaces after being fitted together; the upper ends of the second support rod (402) and the third support rod (403) are connected to the same set of upper flange interfaces after being fitted together; the upper ends of the fourth support rod (404) and the fifth support rod (405) are connected to the same set of upper flange interfaces after being fitted together. The lower ends of the first support rod (401) and the second support rod (402) are connected to the lower flange interface on the first truss base embedded part (301) after being fitted together. The lower ends of the third support rod (403) and the fourth support rod (404) are connected to the lower flange interface on the second truss base embedded part (302) after being fitted together. The lower ends of the fifth support rod (405) and the sixth support rod (406) are connected to the lower flange interface on the third truss base embedded part (303) after being fitted together.

4. The carbon fiber six-leaf truss support structure for a high-resolution space optical camera according to claim 1, characterized in that, The first truss base embedded part (301), the second truss base embedded part (302) and the third truss base embedded part (303) are fitted with the interface on the truss ring (2) and then glued and reinforced with screws. The truss ring (2) is made of carbon fiber composite material.

5. The carbon fiber six-leaf truss support structure for a high-resolution space optical camera according to claim 1, characterized in that, The secondary mirror embedded part (1), the first truss base embedded part (301), the second truss base embedded part (302) and the third truss base embedded part (303) are all made of titanium alloy.

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