Vol 22, No 4 (2020)

The creation of the aircraft maintenance production organizational structure is not restricted to the building of unit hierarchical subordinate structure with many unit’s bonds in the enterprise system. There important conditions for the maintenance company activities effective implementation are the properly built organizational structure, optimal construction of the functional structure relations and effective staffing policy. The issues of hierarchical organizational structure constructing are solved in one or another way and there construction methodologies are formalized, the personnel requirements are formulated in sufficient details and satisfy today’s needs of aviation enterprises within the framework of the state aviation administration rules, but the problem of the functional structure creation remains relevant. The main problem is the lack of universal way of the functional structure describing that underlies many specific maintenance tasks. This work is aimed to solve this problem.

Computer simulation of the process of sinking strain a cylindrical workpiece on a spacer was performed in the Deform 2D / 3D software package. The influence of the degree of deformation, the relative dimensions of the workpiece, the magnitude of external friction, the relative dimensions of the hole in the spacer, the forging angle and the radius of the curve of the edge on the nature of the shape of the nave is established. With an increase in the degree of deformation, an increase in the height of the nave is established according to the law of the exponent. The lower the relative height of the workpiece H0 /D0, the higher the height of the nave. External friction promotes the formation of a higher nave than with the sinking strain of the workpiece in the absence of external friction. With an increase in the relative size of the hole in the washer d0 /D0, a noticeable increase in the height of the nave is observed. At large degrees of deformation, the radius of curvature of the edge of the hole does not affect the shape of the nave. With an increase in the forging angle from 1º to 6º, the height of the nave increases within (12 - 18) %.

This article assesses the level of personal responsibility of the job responsibilities of engineering and technical workers in the mining department of PJSC «Uralasbest» in the conditions of maintaining the organizational structure while changing the purpose of the enterprise; the actual results of the activities of the employees of the mining department of PJSC «Uralasbest» were compared with the requirements specified in their job descriptions; indicators for assessing the effectiveness of the development of the organizational structure of a mining enterprise were determined; a correlation analysis of the impact of the effectiveness of the organizational structure of a mining enterprise on the efficiency of production processes was carried out; the relationship was established between the effectiveness of improving the organizational structure of the divisions of a mining enterprise and the efficiency of production processes, expressed by the amount of productive time of equipment operation; presents a methodology for improving the organizational structure of a mining enterprise, which includes four main blocks: defining the purpose of the enterprise, designing the organizational structure, bringing the organization of production processes to the required state and monitoring the work in a regular mode.

The relevance of determining of the basic conceptual model of data for design and technological preparation of production in a single information space is due to the need for successful implementation of information support technologies for products in the pre-production processes. This requires a clear understanding of how the product data information model will be organized in the enterprise information space. For this purpose, a basic conceptual data model has been developed, the graphical and mathematical representations of which are presented in the article.

The article is devoted to the urgent problem of reducing the negative impacts of industrial enterprises on the environment and increasing the competitiveness of products. Minimization of environmental threats can be achieved by the development of environmental production, which today is difficult due to the imperfection of the mechanism for the practical implementation of environmental projects. The aim of the article is to formulate a valuation procedure methodology and develop an algorithmized model for the process of implementing a project for the greening of industrial production. To achieve this goal, we used the method of formalization and modeling, methods of cause and effect relationships and structural-functional analysis. To visualize the process of implementation of the project on the greening of production, the method of modular design of algorithms is used, which allows one to form an algorithm from structural algorithmic units using their serial connection or branching in compliance with established constraints and alternatives. The key elements of the conceptual apparatus of the organization of environmental production systems are identified that relate to the project approach to environmental change. The necessity of developing a structurally functional and algorithmized model of the process of implementing the project on the greening of production is substantiated. The block diagram of the algorithm for the implementation of the project on the greening of industrial production, including five consecutive stages of the project life cycle, has been developed. A number of evaluation procedures are provided on the basis of established conditions and constraints, the result of which are branches when switching between modules with a further selection of algorithmic alternatives. A characteristic of the evaluation procedures at the stages of the project life cycle is suggested, indicating indicative parameters and the conditions for the transition to the next stage of the project for the greening of production. When passing the assessment procedures, control indicators are provided in the form of optimal, critical or actual parameters, which allow determining the possibility or impossibility of further movement along the algorithm tree. The feedback flows between the modules are indicated, which provide for the adjustment of project plans due to the identification of elements of the unavailability of the production system for environmental changes for organizational or technical reasons. The results obtained are the basis for further research on the organization of environmental production systems, software development projects for the greening of production.

The analysis of physical and mathematical models of stressed magnetoanisotropic structures (NMAS) is considered, in which physical models are presented in the form of a ferromagnetic rectangular plate or a quarter of a ring element (SE) in an electromagnetic field under force. Their mathematical models are described by systems of differential equations of theories of electromagnetic fields, ferromagnetism and elasticity in Cartesian, cylindrical and spherical coordinates. It is shown that the picture in NMAS in spherical polar coordinates is most fully reflected, which is confirmed experimentally.

The article presents the results of the study of the effect of accounting on the nonlinearity of the characteristics of the throttles of the side blocks of the launch vehicle “Soyuz-2” on dynamic and accurate characteristics of fuel consumption control system operation. When the component ratio control system (RCS) is excluded from the fuel composition control system of side units, the accuracy of implementation of control commands calculated in the LSC algorithm begins to be influenced by technological scattering of angular speed of rotation of various samples of throttles of side units, non-linearity and technological spread of characteristics of the throttles, which determine the dependence of pressure drop values on throttle on the throttle angle, etc. In order to assess the consequences of exclusion of the RCS system from the fuel consumption control system of the side units, an analytical dependence was selected for approximation of the throttle characteristic and its parameters were calculated, the simulation model of the control object was adjusted to take into account additional disturbances factors, simulation models of the side block engine control algorithm were formed and investigated (using PC simulation) and recommendations were made on using of variant of algorithm that provides the most advanced dynamic and accurate characteristics the fuel consumption control system of the side block operation.