Improvement of spacecraft mirror antenna and electronic circuit boards reliability

Improving the reliability of mirror antennas increasing in size when more and more strict requirements to the deviation of the sizes of a paraboloid, and the miniaturization of electronic modules and a seal mounting on circuit boards, are pressing challenges, the solution of which is associated with high precision measurements at ground-based experimental testing chamber, where the test object. The reliability is directly related to durability, which, in turn, depends on flowing in designs thermo-strength processes in the conditions of orbital flight. The theoretical results are confirmed by calculations in the process of ground testing. The main parameters determined during the experimental research are the relative deformation of the umbrella antenna or circuit boards at various points. For PCBs proposed to apply two mutually perpendicular stripes along and across the tabs on the sides and in thermal vacuum conditions to conduct precise measurement of displacement labels at different temperatures. Then at multiple magnifications on the microscope it is necessary to investigate the size of the microcracks, which can take for allowed deflection. Precision of measurements should be at most 1/3 size of the crack. The proposed method is an improvement of known methods of applying brittle coatings testcustomermap. You can also use methods based on the use of sensitive optical coatings and methods of holographic interferometry, which, however, usually not possible to measure the linear movement with the required accuracy, especially when a large number of controlled points. Using the results of work performed in practice, the design of mirror antennas and on-Board electronics for space applications will increase its reliability by reducing design trial and error, optimization of the operation modes in operation.