Inflatable antenna for a nanosatellite
DOI:
https://doi.org/10.7242/2658-705X/2019.4.2Keywords:
nanosatellite, inflatable antenna, prepreg, hardening, reaction mixture, evaporation, flight experiment, spaceAbstract
A topical problem for near-Earth orbit nanosatellites is the creation of a reliable inflatable antenna. The nanosatellite antenna should be small-sized and should take the given form after launching into orbit. This paper proposes a technology for manufacturing an inflatable antenna from prepreg which is hardened in space orbit. At the same time, all the advantages of inflatable antennas are preserved (small volume and weight, simplicity of design and reliability of bringing into working condition, long-distance steady communication). Small dust particles moving at cosmic speeds cannot damage such an antenna. There is also no need to constantly pump gas into the inflatable elements of the antenna, hence there is no need for mechanisms to provide adjustment of gas supply, additional tanks with gas or tanks with chemical elements to obtain it. The process of selecting a suitable reaction mixture for pre-preg hardening is considered in the paper, the main criteria for the selection being low volatility of its components and hot hardening ability. The results of stratospheric balloon flight with pre-preg samples are given. The design of the inflatable antenna is proposed.
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