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Inflatable space exhibition film antenna With light weight, admission rate, high reliability and low cost expansion notable features, aerospace engineers are being widespread concern that China is in basic technology research stage. Antenna along the orbit, to undergo more substantial changes in high and low temperature, while in the structure there is a big temperature gradient, which will cause thermal stress and thermal deformation. Does not meet the requirements of the thermal equilibrium temperature will reduce the life of the antenna, and even failure; thermal deformation caused by changes in the shape of the reflecting surface of the electrical properties of the antenna will have a great impact. Therefore, to accurately predict the development of inflatable space antenna in orbit temperature field, thermal stress, thermal deformation of the entire structure of the thermal and structural design are of great significance, and reduce development costs and shorten the cycle. First introduced the principle of thermal analysis, thermal analysis orbit loads and shadows, with a description of the temperature field calculation principle and antenna thermal design methods. Established, including skirts, canopy and reflective surfaces ideal space for film exhibition inflatable parabolic antenna model, consider the orbit solar heat, solar heat reflected from the earth, the earth such as infrared radiant heat flux, taking into account the Earth's shadow, the shadow of the institution itself shelter, reached a different position of the sun under the film exhibition space inflatable antenna LEO and GEO runs two cycles of temperature field and conduct comparative analysis. Then analyze and process the results of temperature field, write the load step file to solve the I-DEAS software and ANSYS software interface issues, we propose a antenna in orbit thermal - structural coupled analysis method. Then calculated thermal stress and deformation on the basis of the thermal deformation of the reflecting surface extraction, evaluation of the antenna surface precision, and the results were compared. Finally the introduction of configuration parabolic antenna Inflatable exhibition to introduce the reflective surface cut design methods, including the establishment of skirts, awning, reflective surface, edge cord, cable and configuration support ring inflatable exhibition parabolic antenna model. The formula is derived error analysis of the initial shape surface errors. The use of the aforementioned heat - structure coupling analysis method to calculate the orbit of the antenna in the lowlands in equinox two cycles of temperature field and thermal stress thus obtained, heat distortion, and come after hot deformation parabolic antenna reflector surface with respect to the ideal form surface error results.
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