Browsing Статті з наукових журналів та збірок by Title
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Aircraft aerodynamic characteristics determination at supersonic flight speeds
(ХАІ, 2024)The object of the study is the aircraft aerodynamic characteristics at supersonic flight speeds. The subject of the study is the impact of the aircraft geometric features on the mathematical model, which is used to ... -
Analysis of destruction causes of retaining ring of turbogenerator
(ХАИ, 2018)Description of the destruction (emergency) of a retaining ring of a pre-series Turbogenerator of medium power is submitted in the scientific work. The following destructions were detected: rupture of the back part of ... -
Catalytic synthesis of graphite oxide and graphite nanostructures in transient glow-to-arc plasma discharge
(ХАІ, 2022)Carbon and carbon-based materials like graphene and graphene oxide exhibit a constantly expanding field of applications in science, medicine, and industry. However, their implementation is still hindered by the absence of ... -
Creation of afterburning turbofan engine - history and present
(ХАІ, 2020)The main problems of the creation of afterburning turbofan engines, among which the irremovable surge of the compressor, is disclosed by historical analysis. According to the published models, such surge is a hydrody-namic ... -
Definition of models to determine the gas temperature at the inlet of the turbine's rotor in a life-time monitoring system
(ХАИ, 2010)A life-time monitoring system is developed to predict the life-time of engines used in a gas pumping station. Four different models are presented to calculate the gas temperature at the inlet of the turbine’s rotor, all ... -
Development concept of jet engines for the unmanned aerial vehicles
(ХАИ, 2012)Based on published open sources, analyzed the problems solved by unmanned aerial vehicles (UAVs) and applied them to the types of gas turbine engines. Designing engine for the UAV can perform «from scratch» in designing a ... -
Development of a manipulator for fully automated the process of charging electric vehicles
(ХАІ, 2023)Electric cars are gradually gaining popularity both in the world and in Ukraine. But in order for them to be freely used throughout the country, an appropriate infrastructure is needed. Unlike traditional cars with internal ... -
Discharge characteristics of the magnetron system for sputtering, deposition, and nanotechnology applications
(ХАІ, 2020)Magnetron sputtering is known for years as a powerful tool for coating deposition of cutting tools and machine parts. However the experimental measurements of the magnetron discharge parameters are still necessary to provide ... -
Emission and erosion processes, termoelastic and termoplastic deformation in cathode spots of gas discharge
(ХАИ, 2010)Both moving and stationary cathode spots are considered in such elementary volumes where heat exchange is effected due to the spot motion, heat conductivity, evaporation front displacement, Joule heating, melting heat and ... -
Equations of average isobaric heat capacity of air and combustion gases with influence of pressure and effect of thermal dissociation
(ХАИ, 2019)The article presents analytical dependences of the average specific isobaric heat capacities of the main components of air and combustion products of hydrocarbon fuels, the same in the entire specified range of pressures ... -
Grinding burns in a process of high speed deep grinding
(ХАИ, 2015)Formulated the problem of the need to develop new equipment and processing technology by deep sanding flat surfaces and flat shaped parts of aircraft engines of difficult to cut materials. A study was conducted to ... -
Inverse problems of thermoelasticity for rectangular plates
(ХАИ, 2016)New inverse thermoelasticity problems for frictionally interacting layers have been formulated, in which unknown thermal loading (temperature of boundary surface and intensity of frictional heat flux) has been determined using ... -
Modeling the conditions for obtaining nanostructures during ion-plasma processing taking into account the quantum-mechanical properties of electrode material
(ХАІ, 2024)The subject matter of the article is the thermophysical and mechanical properties of surface layers of structural materials using a quantum-mechanical approach. The aim of the article is to adjust the parameters of the ... -
Movement of unipolar arcs in magnetic field
(ХАІ, 2004)In this paper we present the results of experimental investigation of the unipolar arc movement in a magnetic field, and a model and results of numerical simulation of the unipolar arc ignition process. We have found ... -
Multi-parameter coupled optimization of AL6061 coating porosity based on the response surface method
(ХАІ, 2024)The objective of this study is to study the multi-particle deposition process of cold spray through numerical simulation methods and to use multi-factor coupling to optimize the porosity of Al6061 coating to more accurately ... -
Optical emission spectroscopy measurements on a SPT-20 hall effect thruster on the RHAI ground test facility
(ХАИ, 2006)The plasma plume of a SPT-20 has been analysed by Optical Emission Spectroscopy in order to analyse the emission of XeI, XeII and Al I emitted from the Al2O2 ceramic walls. -
Optimization of particle acceleration parameters of special cold spray nozzles via neural network and genetic algorithm
(ХАІ, 2024)Cold spray technology is a new technology that deposits supersonic solid particles on the surface of materials. There are many factors that affect particle acceleration, such as the geometric structure of the cold spray ... -
Plasma-enhanced thermal growth of copper oxide nanostructures on anode of glow discharge setup
(ХАІ, 2021)Plasma-enhanced growth of copper oxide nanostructures is widely explored in science and manufacturing, since it provides the flexibility, productivity, and cost-effectiveness necessary to meet the growing demands of ... -
Research of logistic processes in production of technical difficult products
(ХАІ, 2022)Automation of production processes, which is widely used at foreign enterprises and largely reduces the labor intensity of products, is of particular relevance. In addition, in some cases, the installation of more ... -
Research on wear resistance coating of aircraft titanium alloy parts by cold spraying technology
(ХАІ, 2020)Titanium alloys are the main structural material of aerospace system component, about 75 % of titanium and titanium alloys are used in the aerospace industry, which have the advantages of low density, high specific strength ...