9 articles in this issue
Mykola Kulyk,Fedir Kirchu,Hanesh Hussein
The object of study is a pushing tandem propeller with joined blades. When analyzing the characteristics of pushing propellers, it was found that one of the problem areas is a decrease in their effectiveness due to a decrease in axial thrust, which occurs... see more
Vladyslav Tsygoda,Kateryna Kyrylenko,Vitaly Petrovsky
The object of research is the formation of the functional zone of a multicomponent ceramic composite based on refractory anoxic compounds. One of the most problematic points is the determination of influence of the type of binder on the formation of the f... see more
Volodymyr Litvinov,Mykola Kosterev
The object of research is the probabilistic characteristics of the occurrence of a short circuit (SC) on overhead electric transmission lines (ETL) of voltage classes 110 kV and higher, the failure of which can lead to the development of an accident in th... see more
Andriy Yerokhin,Heorgiy Zatserklyanyi
The object of research in this work is unproductive heat loss in buildings and construction structures; due to the nature of the heat and mass transfer process; which operates in a complex architectural and structural scheme. One of the ways to reduce unp... see more
?leksandr Korol?v,Pavel Pavlishin,Olexandr Titlov,Valentin Mironchuk
The object of research is the type of power valves – gate valve or wedge valve. Gate valves or wedge valves take a leading place among power valve. It has minimal hydraulic resistance, an almost linear dependence of the flow rate on the degree of opening,... see more
Oleg Burdo,Igor Bezbakh,Serhii Shyshov,Aleksandr Zykov,Aleksander Gavrilov,Oleksandr Vsevolodov,Ilya Sirotyuk,Sergey Terziev
The object of research is drying of spent coffee grounds. In modern production, the issues of rational use of energy in all processes of food technology, including drying, are urgently raised. In many food technologies, 2–3 times more energy is used than ... see more
Volodymyr Kvasnikov,Anatolij Perederko
The object of research is the dependence of the results of measuring vibrational acceleration by a piezoelectric accelerometer on the influence of ambient temperature. The indicated dependence is a change in the constant level in the measured signal. This... see more
Oleksiy Dibrova,Oksana Kyrychenko,Roman Motrichuk,Marina Tomenko,Valentin Melnyk
The object of research is the effect of the ratio of the components of the pyrotechnic mixtures and the pressure of the environment on the temperature of the products of combustion and their content in high-temperature condensate. This topic has its relev... see more