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Quasi-zero-expansion space optical remote sensor supporting structure and method thereof

An optical remote sensor and a technology for expanding space, applied in the field of space optical remote sensing, can solve the problems of difficult implementation and high cost, and achieve the effects of improving structural rigidity, low cost and simple structure

Pending Publication Date: 2018-09-28
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a support structure for a quasi-zero-expansion space optical remote sensor, which solves the high cost and problems caused by reducing the linear expansion of materials on each transmission path or adopting precise temperature control to improve on-orbit stability in current optical remote sensors. Problems that are difficult to implement

Method used

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  • Quasi-zero-expansion space optical remote sensor supporting structure and method thereof
  • Quasi-zero-expansion space optical remote sensor supporting structure and method thereof
  • Quasi-zero-expansion space optical remote sensor supporting structure and method thereof

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Embodiment 1

[0049] From figure 1 , figure 2 and image 3 It can be seen that the support structure of the quasi-zero-expansion space optical remote sensor in this embodiment mainly includes a bottom support frame 1, a top support frame 2, and eight support truss rods 3 and 4 between the bottom support frame 1 and the top support frame 2. One set of bottom joints 8 and four sets of top joints 9;

[0050] The bottom joint 8 includes a joint end 81 and a bottom joint installation surface 82, and one bottom joint installation surface 82 is provided with two joint ends 81; Figure 4 It can be seen that the top joint 9 specifically includes a top joint mounting base 15 and two thin neck connectors 13 arranged on the top joint mounting base 15, from Figure 6 It can be seen that the thin neck connector 13 includes a large end 131 and a small end 132, the large end 131 of the thin neck connector 13 is in the shape of a cone, the small end 132 is in the shape of a cylinder, and the diameter of...

Embodiment 2

[0070] Different from Embodiment 1, this embodiment includes n-layer support truss bar units, and also includes ring beams 16 arranged between two adjacent layers of support truss bar units, and the two end faces of the ring beams are provided with The top joint, the two ends of the support truss bar 3 in the first layer support truss bar unit 17 are respectively connected to the ring beam 16 and the bottom support frame 1 through the large end 131 of the thin neck connector 13 and the joint end 81 of the bottom joint 8 Connection; the two ends of the support truss rod 3 in the second layer support truss rod unit 18 to the nth layer support truss rod unit 19 are all fixed on the adjacent two ring beams 16 by the large end 131 of the thin neck connector 13 Between or between the top support frame 2 and the ring beam 16; adjacent support truss rods form a triangular configuration with the bottom support frame, top support frame or ring beam. The ring-shaped beam 16 is also made ...

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Abstract

The invention belongs to the technical field of space optical remote sensing, and relates to a quasi-zero-expansion space optical remote sensor supporting structure and a method thereof. By combininga geometrical configuration of a truss, and based on the characteristic that the distance between a main reflector and a minor reflector changes due to radial deformation of a support frame, a relation between linear expansion coefficients of a top support frame and truss rods is established. When the support structure is temperature loaded, deformations, along an optical axis direction (the lineconnection direction of the main reflector and the minor reflector), of the top support frame and the truss rods can compensate for each other, and an effect of axial quasi-zero-expansion of an integrated truss structure is realized. To release bending moments, at joint positions, of adjacent support truss rods when the top support frame deforms radially, thin-neck structures are adopted for partsof top joints, so that thermal stress and other assembling stress can be released effectively. The quasi-zero-expansion space optical remote sensor supporting structure and the method thereof solve the problems of high cost and implementation difficulty, caused by only reducing linear expansion of materials on transfer paths or improving on-track stability through precise temperature control, ofexisting optical sensors.

Description

technical field [0001] The invention belongs to the technical field of space optical remote sensing, and relates to a support structure and method for a quasi-zero-expansion space optical remote sensor. Background technique [0002] With the gradual development of space remote sensors in the direction of large aperture and long focal length, more stringent requirements are put forward for the tolerance of the optical system, and the position tolerance requirements between the primary reflector and the secondary reflector are also getting higher and higher, even reaching microns This brings great challenges to the structural rigidity and on-orbit stability of the support device. Especially for support devices of the order of several meters, it is difficult for the traditional monolithic frame structure to meet the above requirements. [0003] The truss structure is widely used because of its high specific stiffness, flexible assembly and other excellent space performance. I...

Claims

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Application Information

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IPC IPC(8): G02B7/00G02B7/182G02B7/198
CPCG02B7/008G02B7/182
Inventor 孙丽军李立波李思远孙剑赵强武俊强
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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