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Engines, Energy and ThermotechnicsAnalysis of the possibility of improving rocket engine nozzles

Analysis of the possibility of improving rocket engine nozzles

Analysis of the possibility of improving rocket engine nozzles Oleksandr Zolotko ORCID: https://orcid.org/0009-0008-5600-500X Oles Honchar Dnipro National University It is possible to significantly increase the impulse characteristics of the rocket engine due to the use of effective nozzles in which the flow of atmospheric air optimizes the jet. The purpose of the work is to analyze the characteristics of slotted nozzles, nozzles with ground and height contours, nozzles with a central body, nozzle blocks with nozzles covered by a common …

Innovative Technologies in Mechanical EngineeringDevelopment of software for the control program of winding axisymmetric shells made of polymer composite materials

Development of software for the control program of winding axisymmetric shells made of polymer composite materials

Development of software for the control program of winding axisymmetric shells made of polymer composite materials Yukhym Myhovych ORCID: https://orcid.org/0009-0004-9773-0751 Oles Honchar Dnipro National University Ivan Karpovych ORCID: https://orcid.org/0000-0003-3633-8532 Oles Honchar Dnipro National University Svitlana Klymenko ORCID: https://orcid.org/0000-0003-2005-9993 Oles Honchar Dnipro National University The development of software for a winding machine for axisymmetric shells made from polymer composite materials is crucial in modern high-tech material manufacturing. The increasing demand for lightweight and durable composite materials in industries such as aviation, …

Ecology, industrial and environmental safetyEnvironmental aspects of innovative technologies in the conditions of crisis phenomena in Ukraine

Environmental aspects of innovative technologies in the conditions of crisis phenomena in Ukraine

Environmental aspects of innovative technologies in the conditions of crisis phenomena in Ukraine Olena Zolotko ORCID: https://orcid.org/0000-0003-2482-7574 Oles Honchar Dnipro National University The ecological aspect of the legislative framework for the organization and implementation of innovative activities in Ukraine has been studied. Environmental innovations are a separate segment of the general innovation market. Interest in the implementation of environmental innovations demonstrates the concern of society about the state of environmental problems. The purpose of the work is to study the …

Innovative Technologies in Mechanical EngineeringModern air defense methods and countermeasures for use in operational-tactical missiles

Modern air defense methods and countermeasures for use in operational-tactical missiles

Modern air defense methods and countermeasures for use in operational-tactical missiles Mykola Bondarenko ORCID: https://orcid.org/0009-0008-8421-8408 Oles Honchar Dnipro National University Mykhailo Vorobei ORCID: https://orcid.org/0009-0009-9173-8564 Oles Honchar Dnipro National University In contemporary military contexts, operational-tactical missile systems constitute pivotal arsenals in modern warfare scenarios. To safeguard against the evolving threats posed by these systems, a continuous evolution of defensive strategies and technologies is imperative. This article delves into the multifaceted realm of missile defense, scrutinizing a spectrum of methodologies from conventional …

Control Systems, Telecommunications and NavigationTransfer functions of a time-varying control system

Transfer functions of a time-varying control system

Transfer functions of a time-varying control system Volt Avdieiev ORCID: https://orcid.org/0000-0002-9986-7637 Oles Honchar Dnipro National University The mathematical model of linear time-varying systems (LTV) is the differential equations with coefficients that change over time. The question of their analysis and synthesis is an integral part of the control theory, the development of which is caused by the need to solve a number of technical problems, in particular, the design of aircraft motion control systems. For the study of LTV, in …

Innovative Technologies in Mechanical EngineeringStatus and engineering trends of machine-building industry of Ukraine during the war (2014 – 2023)

Status and engineering trends of machine-building industry of Ukraine during the war (2014 – 2023)

Status and engineering trends of machine-building industry of Ukraine during the war (2014 – 2023) Yehor Lukianenko ORCID: https://orcid.org/0009-0002-3326-7767 Oles Honchar Dnipro National University The article investigates the current state and tendencies of development of the machinebuilding industry of Ukraine in the conditions of unbalanced, raw material-oriented economy. Its leading role in shaping the production potential of other sectors of the economy and ensuring the scientific and technological progress of the country has been established. The sectoral structure of the …