A Forming Method Applicable to Satellite Grid Composite Bearing Cylinder

Abstract

The invention discloses a forming method for a latticed composite material bearing cylinder applicable to a satellite, and an angle deviation is small; a multi-axis numerical control winding machine high-precision winding method is adopted, the theory fiber orientation angle deviation is within + / -0.5%; through automatic cutting of a numerical control cloth cutting machine, the laying angular deviation can also be controlled within + / -0.5%; at the same time, a line is carved on a forming mold, the total laying angle deviation of a pre-immersing material is within + / -1%. Latticed ribs, covering skins and stringers are co-cured, the glue-joint surface lamination defect and the negative glue applying amount are reduced, the axial stiffness is improved to a greater degree, and the integral bearing capacity of a composite material is improved. The latticed ribs and the covering skins are wound integrally, an upper end frame and a lower end frame are rolled flatly to enhance by the latticed ribs, cylinder body flange assembly and T-shaped stringer laying and integral co-curing are adopted, and all the processes can improve the structural stability of a product.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a forming method suitable for a bearing cylinder of satellite grid-shaped composite materials. Background technique [0002] The load-bearing tube is the load-bearing structure that carries the main load of the satellite. It is the core of the assembly of the entire satellite structure. It bears the main load of the entire spacecraft and directly transmits the load of the launch vehicle to all parts of the entire spacecraft. Prior to this, the upper end frame, lower end frame, skin, flange components, and stringers were formed separately for the formation of the satellite bearing tube, and realized by the secondary curing of the adhesive. [0003] At present, for this kind of grid-reinforced structure, if the bonding form is adopted, the reliability of the bonding between the skin and the grid is low, which will not only increase the negative weight, but also reduce the axial s...

AI Technical Summary

Problems solved by technology

Each structure requires at least one kind of tooling in the manufacturing process using the conventional process method. The adoption of the bonding process introduces layered defects on the bonding surface, increases the amount of negative glue used, and the entire production cycle will last for more than 5 months.

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