In this article the results of stress-strain state investigation for composite airplane wing stringer with different layers stacking structures are presented. As an object of research, a stringer made of composite carbon with V-shaped cross-section is considered. Due to the stress-strain state analysis of various stringer structures, the most effective structure for stringer layers stacking is selected, both in the view of providing the most rigidity and optimal perception by the stringer the field of external loads, which are most typical for the conditions of its operation.

The paper considers the simulation of fluid flow processes in the FlowVision software with taking into account the capillary action, wettability, surface tension forces and fluid viscosity. Test problems were solved to take into account the influence of surface wettability on the basis of modeling a drop of mercury placed on a hydrophobic surface, as well as taking into account the capillary action by immersing a thin tube in a liquid and raising its level. Qualitative and quantitative analysis of the results was made, conclusions were made about the applicability of the FlowVision software for simulating the process of impregnating the framework of reinforcing fibers with a binder when forming products from metal matrix composites.

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