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Multifunctional method of spase telescope precision units production

Keywords:

A.O. Shtokal – Ph. D. (Eng.), Design Engineer 1к, Kaluga branch of Lavochkin Research and Production Association. E-mail: cuauthemoc1@yandex.ru E.V. Rykov – Head of Department, Main Designer, Kaluga branch of Lavochkin Research and Production Association. E-mail: rik@laspace.ru K.B. Dobrosovestnov – Head of Department, Kaluga branch of Lavochkin Research and Production Association. E-mail: dkb@laspace.ru T.A. Govorun – Post-graduate Student, Kaluga branch of the Bauman MSTU, Design Engineer, Kaluga branch of Lavochkin Research and Production Association. E-mail: Glancet@yandex.ru O.P. Bazhenova – Head of Sector, Lavochkin Research and Production Association (Khimki, Moscow region). E-mail: bazhenova_laspace@mail.ru T.V. Rozhkova – Head of Laboratory, Lavochkin Research and Production Association (Khimki, Moscow region). E-mail: rojkova_t@list.ru


The space telescope construction used for working in determined spectre of electromagnetic emission will provide astronomers with knowledge-intensive means of the Universe studying and permit greatly increasing our knowledge about environment. Therefore, outer space work condition and requirements to the quality information obtained by telescope impose huge amount of interrelated requirements to physical characteristics of materials used in production of space telescopes precision units. Microarc oxidation is an advanced method of composite materials generation with wide rate of obtaining physical properties and comparing simplicity tech-nological process guiding in composite material generation with a priori physical characteristics. A range of scientific and technical problems in the sphere of the condensed-matter physics is elaborated in this article, in result, the following results are obtained. 1. The interrelation between the thickness of MAO-covering, its exterior layer and pore bridging process for optimal technology gen-eration for space telescope warmer isolation layer is determined. 2. The dependence of a thickness of zirconium alloy 702 MAO-covering on thermal conductivity coefficient; the dependence of a ratio of a covering area to total area of composite material in measuring cross-sections on the linear thermal expansion coefficient of composite material ‘aluminium alloy АМг6 – MAO-covering’; the dependence of covering area part in item section total area on a ratio of item rigidity of aluminium alloy АМг6 with MAO-covering to item rigidity without covering; the dependence of covering area part in item section total area on a ratio maximal mechanical stresses in an item of aluminium alloy АМг6 with MAO-covering to maximal mechanical stresses in an item without covering are established. 3. The optimal technological modes of composite materials generation based on aluminium alloy АМг6 and zirconium alloy 702 allowing minimization of outgassing in outer space and increasing the space telescope optical system work quality are identified. 4. Referring to explorations of different size MAO-coatings behaviour in the condition of repetitive temperature changes it is recom-mended for items of aluminium alloy АМг6 with such coatings of thickness more than 50 µm intended to work in condition with tem-perature changes more than 200°C to avoid stresses concentrators (tops and edges). 5. Microarc oxidation is a progressive method of generation of wear-resistant, corrosion-resistant, thermal protecting and dielectric coatings, whereas one should remember that depending from conditions of exploitation, type of structure and preferable type of de-formation the choice of MAO-coating thickness can occur in considerable influence on the load capacity of a structure.
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