Multi-unit cubic star main load-bearing structure based on carbon fiber composite

Abstract

The invention discloses a multi-unit cubic star main load-bearing structure based on a carbon fiber composite. The multi-unit cubic star main load-bearing structure comprises a box, supporting corners, first fixing frames, second fixing frames, bolts and a metal cover plate, wherein four bolts are distributed in a trapezoid form; the first fixing frames are respectively arranged at the two ends of the bolts; the second fixing frames are arranged in the middle of the bolts; the four bolts, the first fixing frames and the second fixing frames are formed into a load-bearing frame; the box is arranged as the box without cover on one side; the load-bearing frame is arranged in the box; the metal cover plate is arranged at a cover-free end of the box; the supporting corners are respectively arranged at the four corners of the top and bottom of the box. According to the invention, the cubic star is lightweight, the structure strength and rigidity are promoted and the thermal control problem is solved.

Description

technical field [0001] The invention belongs to the cube star technology, in particular to a multi-unit cube star main load-bearing structure based on carbon fiber composite materials. Background technique [0002] As we all know, the performance of spacecraft structure and mechanism, especially the performance of spacecraft structure depends on the performance of materials to a large extent. During the development of the cube star, designers have been pursuing how to reduce the quality of the cube star, because the weight reduction of the cube star can increase the payload and bring extremely considerable benefits. At the same time, in the CubeSat launch environment, it is subjected to great acceleration overload and strong vibration. In order to avoid resonance between the CubeSat and the launch system, the CubeSat is required to have sufficient strength; since most CubeSats adopt thin-walled structures, satellites are required to The structural material has higher stiffn...

AI Technical Summary

Problems solved by technology

Foreign countries have begun to apply carbon fiber composite materials to the research and development of cube stars. The Norwegian University of Technology successfully launched a dual-unit cube star NTNU. Its main frame uses a structure composed of four aluminum alloy rods and six carbon fiber composite panels. Complicated assembly and poor openness

[0004] Chinese patent 2015CN105083590A discloses the main load-bearing structure of a multi-unit cube star. The outer frame is made of an aluminum alloy frame, and the surface of the frame is to be connected with a PCB-Al-PCB side plate to connect with the solar array. The structure is complex, and the structure of the cube star is added. quality, which reduces the load-to-structure-to-mass ratio, which reduces the strength of the structure

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