DOI 10.51955/2312-1327_2023_3_68

Nikolai G. Filippenko

Alexandr V. Livshits

Tamara T. Chumbadze

Abstract. The use of new modern structural materials that would improve the physical and mechanical properties of products, assemblies and components of machine and transport engineering would reduce the mass fraction of metals in their design, which is a very urgent task. The purpose of this study was to develop an algorithmic solution for the automated control of the technology for manufacturing products from photopolymers based on the found scientifically based set of controlled parameters obtained in the process of studying the physical and mechanical characteristics and chemical properties of composites.

The experimental and industrial tests of the physical and mechanical properties of resin ROEHM R-50 made it possible to investigate the operation of the photopolymerization control system algorithm in practice.

Keywords: photopolymer, additive technologies, automation, controlled parameters

Download article in PDF 584.5 kB

DOI 10.51955/2312-1327_2021_3_27

Nikolai A. Ponomarev

Abstract. The article deals with some theoretical foundations, regulatory legal acts concerning aspects of functioning of an automated control system. The article describes some aspects of operation of the current automated dispatch control system in the city of Omsk and the Omsk region. The characteristics of the served route network in municipal and inter-municipal communication are given. The main parties and their relationships involved in the operation of the automated dispatching control system are described. The article presents some aspects that arise in the context of implementation of state and municipal contracts for regular passenger and baggage transportation on regular transportation routes in the city of Omsk and the Omsk region in accordance with Federal Law No. 44-FZ. The aspects reflecting the practical experience of operation in accordance with the composition of the automated dispatching control system are presented. The article also describes some aspects that arise during the operation of on-board navigation and communication terminals, software, dispatching support for regular traffic, the functioning of communications and information transmission systems, informing passengers about the process of regular traffic. Aspects of functioning of the automated fare payment system, regulatory legal acts regulating the issues of fare payment on the territory of the city of Omsk are considered. The equipment that ensures functioning of these systems is considered.

Keywords: automated, dispatching, management, passenger, automobile, transportation.

Download article in PDF 4.4 MB

DOI 10.51955/2312-1327_2021_2_24

Sergei V. Ugolkov

Nikolai N. Maiorov

Abstract. The article provides general information about tea products, their nutritional properties, requirements for their transportation, types of packaging and labeling. The characteristics of the rolling stock used in the transportation of tea products by road, sea and rail modes of transport are given. Routes for transportation have been developed, tariff payments for transportation by means of transport have been calculated, and the time of cargo delivery has been calculated. Based on the data obtained, the most rational transportation option was selected.

Key words: tea products, plantations, routes, transportation organization, loading technology, tariff payments, vehicle.

Download article in PDF 1.2 MB

DOI 10.51955/2312-1327_2021_2_6

Roxana E. Shipitsyna

Evgeny E. Vitvitsky

Abstract. The article discusses one of the methods of optimizing the transportation planning – a transport linear programming problem. The main methods for finding the reference plan for loaded riders and the optimal plan for solving it are listed. A formal mathematical model and a system of transport problem constraints are presented. A conceptual mathematical model is built on the basis of a formal mathematical model. An example of solving this problem is given: the reference plan of loaded riders was created with the use of the “north-west corner” method, the optimal plan for the return of empty vehicles with the use of the distribution method. Comparison of the results of application of methods for solving the transport problem of linear programming was carried out: comparison of the reference plans obtained with the use of the least-cost and north-west corner methods, comparison of the optimal plans for the return of empty cars obtained with the use of potential and distribution methods. Comparison criteria selected were the number of iterations, labor intensity, the result. Based on this, it was established that the obtained optimal plan for the return of empty cars is the same; according to other comparison criteria, there are a number of differences.

Keywords: linear programming transport problem, mathematical model, baseline plan, optimal plan, solution methods, north-west corner method, minimum-element (least-cost) method, distribution method, potential method.

Download article in PDF 346.3 kB

UDK 629.7.036.3 BBK 39.15

Kirenchev A. G.

Danilenko N. V.

The article explores the contradictions, problems and methods of maintenance of modern civil aviation aircraft. After increasing the air flow through the engines, a qualitative transition of vortex formation before the air intakes to vortices of blurred intensity was established. New directions for aircraft ground operation when gas turbine engines are running on the ground are suggested. Within the framework of the requirements of the International Civil Aviation Organization, Aviation Rules and Airworthiness Standards, the contradictions of aircraft ground operation and their engines are investigated and new additions to the Manual on technical operation and repair of aviation equipment in Russian civil aviation are outlined.

Keywords: vortex formation, the role of the underlying surface, gas turbine power plants, Coriolis force, air intake, technical operation, erosive wear.

Download article in PDF 779.0 kB

UDK 351.814.33 BBK 65.37(5Тад)

Knyazhskiy A. Yu.

Plyasovskikh A. P.

Shatrakov N. A.

State of the air transportation industry in Russia and abroad is considered in the article, market trends are identified. Most of the aircraft used in Russia are manufactured abroad. Over the past decades the number of airfields has decreased significantly and the volume of traffic and the number of flights has decreased tenfold. It is proposed to develop regional aviation and modify aviation infrastructure to improve the competitiveness of air transport companies. The cost of tickets can be significantly reduced by laying direct flights between the regions while now flights between many regions can be carried out only through Moscow despite the fact that the passenger traffic is enough for a separate flight.

Keywords: regional aviation, transport, air transportation, infrastructure, air traffic management.

Download article in PDF 194.3 kB

UDK 654.02  BBK 39.278

Halikov A. A.

Urakov O. Kh.

The article discusses the existing networks of operational communication system using IP technology and analyzes the efficiency of their use in railway transport, in the Joint Stock Company Uzbekistan Temir Yollari (UTY JSC). In addition, conceptual fundamentals of IP – telephony technology are presented on the development of efficient methods for transmitting data using digital communication systems of on-line dispatcher control, ensuring the continuity of the process of controlling the movement of railway transport.

Keywords: research, result, railway, IP-technologies, operational communication system, dispatch communication.

Download article in PDF 247.8 kB

UDK 692:[232.4] BBK 38.5

S. S. Shaumarov

The physical impact of the external environment on the formation of the internal microclimate of premises is studied. The mathematical expression of the interaction process with the parameters of the fence outside and inside air is presented. A method for estimating the residual heat-shielding properties of the building envelope on the railways is offered.

Keywords: railroad facilities, air permeability, mathematical model, thermal upgrade.

Download article in PDF 242.0 kB

УДК 629.42:629.4.054, 625.28 ББК 39.232

O. S. Ablyalimov

The article presents the investigation results of evaluation of the efficiency of 3VL80^s three-sectional main freight electric locomotives (trains) used on the Kattakurgan – Navoi district of Uzbek railways with stop-and-go freight traffic at passing tracks, intermediate stations and interstations. 

The author gives the freight trains traveltime parameters and basic energy indicators of 3VL80S transportation work as numerical values and graphs as well as the regression equations to find the indicator values taking account of  mass variation of freight trains.

The research results are recommended to the specialists of Uzbek railway line-enterprises for developing the complex activities related to the rise of traction and energy efficiency of 3VL80^s three-sectional main freight electric locomotives (trains) in organizing freight traffic on the hilly-mountainous Kattakurgan – Navoi district of «Uzbekiston Railways» JSC.

Keywords: efficiency, result, freight train, movement, electric locomotive, district, method, exploitation, speed, calculation, rolling – stock, analysis, hilly-mountainous, point, dependence, substantiation, stage, railway.

Download article in PDF 233.4 kB