Space extensible catopter device

Abstract

The invention discloses a device that can stretch the reflection plane in space, which includes a foldable ring pole, a foldable rib pole and a plurality of connection joints, wherein, every two foldable ring poles (1) are connected by a ring pole connection joint (2) to form a furling and stretching ring structure; every two foldable rib poles (3) form a furling and stretching rib structure by a rib pole connection joint (4); one end of the rib structure is connected with the ring structure by a ring rib connection joint (5) and the other end is connected with a central ribbed tube connection joint (6) to form a whole rigid body; the ring pole connection joint and the rib pole connection joint drives, locks and controls the foldable ring pole to stretch from the vertical furled state to the horizontal stretched state and controls the foldable rib pole to stretch from the vertical furled state to the expected curve proximity state. The invention has low area density, high structural precision and large holding rate and can be used for the ground or space as a reflector or a collector.

Description

technical field [0001] The invention belongs to the field of aerospace technology, in particular to a deployable reflecting surface device, which is mainly used in space and can also be applied 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 reliable deployment, but a...

AI Technical Summary

Problems solved by technology

This structural scheme has two major defects: one is that the height storage rate (about 0.5) is limited by the size of the central long drum structure, and cannot be applied to large-scale expandable structures; the other is that it can only form a conical reflective surface, which is relatively limited

This structural scheme also has two major defects: one is the use of a Z-shaped folded truss rib structure, the structure is complex, and the storage rate in the radial and height directions is not high (the storage rate in the height direction is <2), and its quality and corresponding surface density are also low. It is not low; the second is that the circumference is pulled by a flexible rope, it is difficult to ensure the desired regular hexagonal surface accuracy, and the aperture efficiency is very low if a circular reflective surface is to be formed

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