A deployment antenna mechanism with high stiffness and high storage ratio

Abstract

The invention discloses a high-rigidity and high-storage-ratio unfolding antenna mechanism. The high-rigidity and high-storage-ratio unfolding antenna mechanism comprises a compression antenna windingdrum and a guiding limiting mechanism; an antenna is arranged in the compression antenna winding drum; and a compressing releasing mechanism is arranged on the outer side of the guiding limiting mechanism. The high-rigidity and high-storage-ratio unfolding antenna mechanism has the characteristics of high storage ratio, light weight, repeatable expansion and the like; and the extended antenna diameter and length can be adjusted, and the unfolding speed of the mechanism can be controlled, thereby reducing impact after the antenna is in the proper position.

Description

technical field [0001] The invention belongs to the technical field of space vehicles, and in particular relates to a high-rigidity and high-storage-ratio deployable antenna mechanism. Background technique [0002] With the development of space vehicle technology, especially the development of satellite technologies such as small satellites, micro-nano satellites, and cube satellites, antennas with light structure, high rigidity, and good stability are of great importance to improve the pointing accuracy and antenna stability of small satellite antennas. significance. [0003] The practicality and functions of small satellites are further enhanced, and higher and higher requirements are put forward for the transmission speed and output power of the antenna. It is difficult to make the traditional small satellite antenna too large, which affects its installation on the surface of the satellite. The antenna with high storage ratio has a very small volume when folded, which m...

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Problems solved by technology

[0005] 1) For the unfolded antenna, the length of the compressed state is usually the same as the unfolded length. The folding times of the multi-stage folding antenna mechanism is usually no more than 3 sections, the storage is relatively low, and a complex compression and release mechanism needs to be configured;

[0006] 2) The use of a sleeve-type antenna deployment mechanism requires a complex telescopic mechanism, usually a screw, a rope mechanism, and a locking mechanism in place. There must be a gap between the sleeves of each level, which has complex mechanisms and heavy weight. Large, low reliability and other shortcomings;

[0007] 3) The volume and weight of small satellites are relatively small, and it is difficult to adapt to the use of large antenna mechanisms, which limits the data transmission rate and affects the performance of small satellites

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