Deployable surface device with fixed truss structure

Abstract

The invention discloses a deployable surface device with a fixed truss structure, which mainly aims to solve the problems of high areal density, complicated structure, low deployable reliability and the like in the prior art. The device comprises a plurality of folded rings and connection joints, wherein every two folded rings (2) are connected by one ring connection joint (1) so as to form a circular foldable and deployable ring structure; each folded ring adopts a rectangular or regular triangle hollow straight bar single-rowed truss structure; driven or locked by the ring connection joints, the folded rings are unfolded into an approximately curve working state from a vertically folded state; staggered flexible pulling ropes are arranged on the folded rings; and a wire mesh or a film of which the surface is coated with aluminum is bound to the pulling ropes, so that the deployable surface device with the fixed truss structure is formed. The deployable surface device with the fixed truss structure has high composite performance indexes such as low areal density, simple structure, high deployable reliability, capacity of transmitting or converging electromagnetic waves in a long distance and the like, and can be used as a reflector or a converging device in space or on the ground.

Description

technical field [0001] The invention belongs to the field of aerospace technology, in particular to a deployable surface device with a fixed truss structure, which is mainly used in space or on the ground. Background technique [0002] With the continuous development of aerospace technology and the continuous expansion of aerospace applications, space large-scale deployable devices such as large-scale deployable antennas and solar panels have been more and more widely used, and even become one of the key components for the success of satellite applications. . However, the limitations of launch vehicle size and carrying capacity, the high cost and high risk of aerospace applications, and the significant differences between the ground development environment and the space working environment all make the design of large-scale deployable devices one of the key technologies for aerospace applications. Large-scale deployable devices not only require light weight and reliable dep...

AI Technical Summary

Problems solved by technology

The main disadvantages of this structure are: first, due to the use of a plurality of telescopic truss structures with parallelogram diagonal rods, the structure is complex and the deployment reliability is low; second, because there are hinges at the four corners of each parallelogram, The diagonal rod is equipped with a sleeve, so the quality is relatively large and the cost is relatively high; the third is that the surface density is relatively high, about 0.36Kg / m 2

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