A spring-driven spatially expandable loop antenna device

Abstract

The invention discloses a spring-driven space deployable annular antenna device. The spring-driven space deployable annular antenna device comprises n sets of triangular deployable assemblies and an equilateral right triangle deployable unit A; the equilateral right triangle deployable unit A is composed of n sets of triangular deployable cooperative assemblies connected below the n sets of adjacent triangular deployable assemblies; n is greater than or equal to 2; the n sets of triangular deployable assemblies are connected end to end through four-head hinges; the n sets of triangular deployable cooperative assemblies and the n sets of triangular deployable assemblies share the same set of transverse rods connected through the four-head hinges; the n sets of triangular deployable assemblies and the n sets of triangular deployable cooperative assemblies are connected end to end; and, under the action of the elasticity of a spring, folding or unfolding is carried out, so that the deployable annular antenna device is formed. The device has relatively high geometric stability; a motion mechanism and a control system are simple; after being folded, the device is small in volume and high in accepting rate; an active driving device is unnecessary; the module extensibility is high; accessories are simple; and use requirements of large-aperture space antennas, such as communication satellites and space exploration, can be satisfied.

Description

technical field [0001] The invention relates to a deployable antenna device, in particular to a spring-driven deployable loop antenna device, which belongs to the technical field of aerospace equipment and equipment. Background technique [0002] With the rapid development and deepening of space science and technology, aerospace engineering, and various space exploration activities, the demand for high geometric stability, large scale, and light weight of space structures has become more and more urgent. However, due to the limited carrying space of aerospace vehicles, it is impossible to directly send the formed large-scale space structure into the orbit. Therefore, it is necessary to design a space expandable device with a large folding-to-expand ratio. In the payload compartment of the vehicle; after being launched into orbit, the expandable device is deployed under ground control, and finally locked in the working state. It has become a solution to the above-mentioned pr...

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Problems solved by technology

[0003] At present, most spatially deployable antennas use motors as the power source to drive ropes to pull the mechanism to achieve the overall deployment. Although the motor drive has a significant effect on the speed control and impact vibration during the deployment process, the complex drive mechanism not only makes the mechanism The weight has increased, which also reduces the working stability of the mechanism, which not only puts higher requirements on the carrying capacity, but also easily causes the antenna to fail to deploy normally, resulting in the inability to carry out space research tasks, resulting in huge economic losses.

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