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Engines, Energy and ThermotechnicsThe problem of combustion instability in liquid rocket engines

The problem of combustion instability in liquid rocket engines

The problem of combustion instability in liquid rocket engines Samir Vekilov ORCID: https://orcid.org/0000-0001-5736-6300 Oles Honchar Dnipro National University Volodymyr Lipovskyi ORCID: https://orcid.org/0000-0002-7939-7973 Oles Honchar Dnipro National University Roman Pustovyi ORCID: https://orcid.org/0009-0002-6066-9788 Dnipro Aerospace LLC, Ukraine The purpose of this work is to carry out an overview on combustion instability in liquid propellant rocket engines, its classification, the main principles of occurrence as well as ways to prevent the phenomena while designing of the prospective engine. A new approach is based …

Innovative Technologies in Mechanical EngineeringImprovement of reinforcement technique of parts with composite fiber in FDM 3D-printing

Improvement of reinforcement technique of parts with composite fiber in FDM 3D-printing

Improvement of reinforcement technique of parts with composite fiber in FDM 3D-printing Maksym Sirenko ORCID: https://orcid.org/0009-0006-0417-2661 Oles Honchar Dnipro National University Olena Karpovych ORCID: https://orcid.org/0000-0002-0677-5822 Oles Honchar Dnipro National University The use of parts produced via FDM 3D-printing is getting more and more popular withing aerospace field. Parts, made with such additive manufacturing methods, can be used for prototyping, as manufacturing implements or used directly as an end product. One of the means of improving the functional parameters of parts …

Ecology, industrial and environmental safetyReduction of the risk of disease to the population through dusting of agglomeration gases

Reduction of the risk of disease to the population through dusting of agglomeration gases

Reduction of the risk of disease to the population through dusting of agglomeration gases Yuliia Voitenko ORCID: https://orcid.org/0000-0003-0819-3794 Oles Honchar Dnipro National University The analysis of methods and means of dedusting at sinter plants of our country showed an insufficient level of sinter gases purification. It is established that in order to achieve the required degree of gas purification, it is necessary to reduce the flow of dust into the air directly in the sources of dust formation. This will …

Ecology, industrial and environmental safetyInternational waste trade: environment or business

International waste trade: environment or business

International waste trade: environment or business Nataliia Krasnikova ORCID: https://orcid.org/0000-0002-6484-2050 Oles Honchar Dnipro National University Dmytro Kobyliak ORCID: https://orcid.org/0009-0005-6362-6240 Oles Honchar Dnipro National University The modern world generates a huge number of different wastes: household, construction, industrial, medical etc. More developed countries generate more waste as a result of economic activity. Such countries have an important need for waste disposal. Since developed countries have strict environmental legislation, waste disposal is expensive and stimulates the need for their removal from the …

Project Management and LeadershipInnovative approaches in marketing for the development of the tourism industry

Innovative approaches in marketing for the development of the tourism industry

Innovative approaches in marketing for the development of the tourism industry Yuliia Stasiuk ORCID: https://orcid.org/0000-0001-6644-8658 Oles Honchar Dnipro National University Andrii Kobchenko ORCID: https://orcid.org/0000-0002-5095-6815 Oles Honchar Dnipro National University The tourism industry is a dynamic and rapidly evolving sector that significantly contributes to global economic development. In recent years, the sector has faced unprecedented challenges, including economic downturns, environmental concerns, and the global pandemic. To navigate these challenges and thrive, the tourism industry must adopt innovative marketing strategies that can …

Engines, Energy and ThermotechnicsDetermination of the components to be taken into account when calculating the total mass of working substance of an electric propulsion system based on a Hall thruster

Determination of the components to be taken into account when calculating the total mass of working substance of an electric propulsion system based on a Hall thruster

Determination of the components to be taken into account when calculating the total mass of working substance of an electric propulsion system based on a Hall thruster Serhii Asmolovskyi ORCID: https://orcid.org/0009-0000-5423-9365 Oles Honchar Dnipro National University Serhii Bondarenko ORCID: https://orcid.org/0009-0007-2478-0290 Oles Honchar Dnipro National University The total impulse is one of the main requirements for a spacecraft propulsion system. Its fulfillment depends on the specific impulse of the thruster and the propellant mass. The propellant mass consists of a working …