MICROSTRUCTURAL MULTILAYERED SCREEN AND VACUUM ISOLATION OF SPACECRAFTS

摘要

FIELD: aviation.SUBSTANCE: invention relates to the multilayered screen and vacuum isolation (SVI) with microstructural elements for spacecrafts. Each layer of SVI is implemented as a substrate on which the heat reflecting elements designed as massif of rectangular microplates are fixed. Each microplate is fixed on a substrate with a gap 10?20 mcm. On the substrate side facing towards the spacecraft the flutes with rectangular or trapezoidal section, and also longitudinal depressions with semicircular cross-section are implemented. The second and the subsequent layers of SVI are attached to the previous layers through the spherical spacers installed between plates. The diameter of spacers is no less than the size of the named gap. In the places of installation of spacers the layers of silicon dioxide with the thickness 0.5?1 are applied. The aluminium coating with the thickness 0.1?0.3 microns with the reflection factor 0.7-0.9 is applied on external surface of microplates and open surfaces of the substrate. Microplates can be bimorph. Microplates are manufactured with conducting buses on the surface of the silicon substrate.EFFECT: decrease of weight and overall dimensions of EVI and spacecrafts.7 cl, 7 dwg