No abstract

No abstract

No abstract

The paper discusses a possibility of application of dynamic vivacity function in interior ballistic process mathematical model. At present time, various technologies of powder grain surfacing are applied, mainly in case of powder grains used in assemblies of small-calibre cartridges. The grain surfacing can desirably influence the interior ballistic action. It can further change basic powder thermodynamic properties, and particularly, it can change the character of the powder grain burning, which cannot be described by geometric burning concept. According to the established standards, a necessity of the dynamic vivacity function L evaluation is determined for artillery powders only, but the way of its evaluation can be applied for arbitrary powder grains. The application of the dynamic vivacity function then allows to get results of solution of the interior ballistic tasks with higher accuracy, as well as the selection of suitable grain surfacing technology.

The work deals with the issue of engineer information, which is necessary for the planning of water crossing, and which can facilitate and speed up the proces of operation planning with the assistance of the staff members of engineer specialization. At present (2019) there is no application software development of engineer support tasks (hereinafter APV ŽEN) within the engineer command and control subsystem AČR, which would take into account the problem of water crossing by troops. The aim of the article is: to analyze the gathering of engineer information for water crossing and to describe it on a specific example of the Morava river, to identify the possibilities of water crossing by forces of AČR, to propose a map base for APV ŽEN, which will be supplemented by engineer information from Povodí s.p. and Motorway and Highway Directorate (hereinafter ŘSD) and to define measures that will support the availability of engineer information in water crossing.