Push-condensing integrated high-resolution space optical load ultra-light carbon fiber truss support structure

Abstract

The invention relates to a push-condensing integrated high-resolution space optical load ultra-light carbon fiber truss support structure. The structure comprises an adjusting gasket, a secondary lenschamber, a truss rod, a metal embedded part and a support ring. A boss at the upper end of the adjusting gasket is an installation plane of a secondary mirror component, and a boss at the lower end of the metal embedded part is an installation plane of a truss and a primary mirror component. The adjusting gasket, the secondary lens chamber and the metal embedded part are made of titanium alloy materials, and the truss rod and the support ring are made of carbon fiber composite materials. The cross section of the truss rod is concentric-square-shaped, and the cross section of the support ringis concave-shaped. The truss support structure is less than 2.2 kg in total mass and is 1 / 3-1 / 2 times of the mass of a traditional metal truss. The truss support structure is simple, light in weight,good in strength, rigidity, structural stability and other index characteristics, can resist the influence of a complex mechanical environment on a space optical load in the transmitting process, ensures the position relation among optical elements, and meets the requirement of the push-condensing integrated high-resolution space optical load on the support structure.

Description

technical field [0001] The invention belongs to the technical field of space optics and precision machinery, and in particular relates to an ultra-light carbon fiber truss support structure with push-condensation integration and high-resolution space optical load. Background technique [0002] The carbon fiber truss for space optical load is the supporting structure between the main optical components. It must have good strength, stiffness and structural stability to resist the influence of the complex mechanical environment of the optical load during launch and ensure that the optical components The positional relationship ensures the imaging quality of the optical load. Compared with traditional metal materials, carbon fiber composite materials have physical and mechanical properties such as low density, high specific strength, high specific stiffness, and good thermal stability. At the same time, the preparation process of carbon fiber composite structural parts is becomi...

AI Technical Summary

Problems solved by technology

The main disadvantages of this structure are: ①The mass is 6.07kg, the first-order fundamental frequency is 138Hz lower, and the structural strength and stiffness index is poor; The lower ring of the truss) is connected together, resulting in excessively large axial dimensions and heavy weight of the support structure. After the truss assembly is assembled, it is not easy to grind the two end faces of the support structure, resulting in poor parallelism between the two ends of the plane and the two ends of the plane. The verticality difference of the truss axis affects the installation accuracy of the camera’s primary and secondary mirrors and the relative position between the primary and secondary mirrors; The position between the mirrors is fine-tuned; ④The mounting holes for the camera hood are not given around the secondary mirror chamber

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