VESTNIK of Samara University. Aerospace and Mechanical Engineering最新文献_第3页

Main approaches and features of the design of aircraft hydro-mechanical control systems 飞机水力机械控制系统设计的主要方法和特点

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-67-79

P. V. Petrov, V. Tselischev, D. Kuderko

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Ballistic analysis of a mission to Jupiter’s moon Callisto with landing on the surface 木星卫星卡利斯托（Callisto）表面着陆任务的弹道分析

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-21-37

V. V. Kovalev, A. D. Marchenko, T. Starostina, A. R. Sharipova

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Determination of completeness of combustion, temperature and emission characteristics in a swirl flow based on the theory of turbulent combustion 基于湍流燃烧理论确定漩涡流中燃烧、温度和排放特性的完整性

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-123-136

Y. Aleksandrov, B. G. Mingazov

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Investigation of the influence of broadband mechanical disturbances on the quality of recording interference patterns of GTE-wheel oscillations using a digital speckle pattern interferometer 利用数字斑点图干涉仪研究宽带机械干扰对 GTE 轮振动干涉图记录质量的影响

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-160-176

A. Ivchenko, A. I. Safin

{"title":"Investigation of the influence of broadband mechanical disturbances on the quality of recording interference patterns of GTE-wheel oscillations using a digital speckle pattern interferometer","authors":"A. Ivchenko, A. I. Safin","doi":"10.18287/2541-7533-2024-23-1-160-176","DOIUrl":"https://doi.org/10.18287/2541-7533-2024-23-1-160-176","url":null,"abstract":"The effect of broadband disturbances on the operation of a noise-immune digital speckle pattern interferometer with a continuous wave laser emitter and a diffuse-scattering element arranged in front of an oscillating turbine wheel has been studied. Visibility dependences of the recorded interference patterns were obtained under the action of different types of artificially created disturbances. It is shown that the most dangerous mechanical disturbances for the operation of a speckle pattern interferometer are periodic noise and pink noise, whereas white noise and natural vibrations of the floor in the room where the experimental setup was accommodated do not significantly influence the quality of the information recorded by the interferometer. This article analyzes the influence of the mechanical properties of the diffuse-scattering element arranged in the speckle pattern interferometer on the quality of the obtained interference patterns. A relationship between the growth of forced tangential oscillations of the diffuse-scattering element and a decrease in the contrast of interference fringes was noted. In this case, an increase in the thickness of the organic glass plate of the diffuse-scattering element up to 8 mm leads to the neutralization of the pink noise action on the speckle pattern interferometer operation. At the same time, the effect of periodic noises decreases the contrast of interference patterns recorded for the cases of using 5 mm and 8 mm thick organic glass plates.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140691939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effective volume of short carbon fibers in a composite from chopped thin tapes 短碳纤维在切碎薄带复合材料中的有效体积

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-188-202

V. A. Komarov, R. F. Abdullayev

引用次数: 0

Effect of HF and ER additions on the mechanical properties and microstructure of AL-MG-SC-ZR system alloys 添加高频和ER对AL-MG-SC-ZR系统合金机械性能和微观结构的影响

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-137-146

E. Aryshenskii, V. Aryshenskii, A. Ragazin, D. Y. Rasposienko, F. V. Grechnikov, V. V. Makarov, S. Konovalov

{"title":"Effect of HF and ER additions on the mechanical properties and microstructure of AL-MG-SC-ZR system alloys","authors":"E. Aryshenskii, V. Aryshenskii, A. Ragazin, D. Y. Rasposienko, F. V. Grechnikov, V. V. Makarov, S. Konovalov","doi":"10.18287/2541-7533-2024-23-1-137-146","DOIUrl":"https://doi.org/10.18287/2541-7533-2024-23-1-137-146","url":null,"abstract":"The study addresses the effect of 1580 and 1590 alloys cold rolled strip annealing practices on the alloys’ grain structure and mechanical properties. The 1590 alloy differs from the 1580 alloy by hafnium and erbium additions. Samples of such alloys were produced by casting into a steel mold. After that they were homogenized during 4 h at 440°С. Then the samples were hot rolled at 440°С, with further cold rolling to 2 mm, with the cumulative percentage reduction equal to 66%. The cold rolled strip was annealed at the temperature ranging from 330 to 440°С with 1 h soaking. The sizes and morphology of Al3Sc strengthening nanoparticles were examined in homogenized condition using transmission microscopy. The mechanical properties and grain structure were defined in cold rolled and annealed conditions. During homogenizing annealing in the 1590 alloy finer strengthening nanoparticles are formed compared to the 1580 alloy. Such features of the microstructure can be explained by the presence of erbium, promoting formation of additional Al3Sc-type nanoparticles nuclei, and hafnium, preventing their further growth. Non-recrystallized structure was identified in both alloys after cold rolling and final annealing. The 1590 alloy has better mechanical properties, regardless of the annealing temperature, which is explained by a larger portion and smaller size of strengthening nanoparticles.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":"60 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140694112","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation of surface morphology, optical and electronic properties of Mg2Si thin films on Si(111) 研究 Si(111) 上 Mg2Si 薄膜的表面形貌、光学和电子特性

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-203-215

D. V. Fomin, A. V. Polyakov, K. Galkin, N. G. Galkin

{"title":"Investigation of surface morphology, optical and electronic properties of Mg2Si thin films on Si(111)","authors":"D. V. Fomin, A. V. Polyakov, K. Galkin, N. G. Galkin","doi":"10.18287/2541-7533-2024-23-1-203-215","DOIUrl":"https://doi.org/10.18287/2541-7533-2024-23-1-203-215","url":null,"abstract":"The article presents the results of a study of the elemental composition, surface morphology, optical and electronic properties of Mg2Si thin films formed on Si (111). Both samples containing films were formed in layers by the method of reactive epitaxy, but at different heating temperatures of the substrates. The formed films consisting of alternating layers of Mg and Si at a ratio of 3:1, according to electron Auger spectroscopy, contain Mg and Si atoms in the associated layers. The Raman light scattering method established the presence of peaks on the graphs of samples at a shift of 258 and 348cm-1 belonging to Mg2Si. Infrared spectroscopy data also indicate the presence of magnesium silicide in the films. The thickness of Mg2Si films was estimated from the data of the known dependence of the amplitude of absorption peaks at 272 cm-1 on the absorption coefficient, which gave the values of the thicknesses of the grown films. Based on the results of the study of samples in the infrared-ultraviolet range and on the basis of geometric calculations, the width of the Mg2Si band gap was determined.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":" 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140691685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis and improvement of characteristics of power supply systems for the small space vehicle of the AIST-2 type 分析和改进 AIST-2 型小型空间飞行器供电系统的特性

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-55-66

M. R. Mordanov, S. L. Safronov

引用次数: 0

New high-strength aluminum alloy on the basis of secondary materials 基于二次材料的新型高强度铝合金

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2024-04-17 DOI: 10.18287/2541-7533-2024-23-1-147-159

M. Barykin, E. A. Naumova, N. A. Belov, A. S. Finogeev, A. Koshmin

{"title":"New high-strength aluminum alloy on the basis of secondary materials","authors":"M. Barykin, E. A. Naumova, N. A. Belov, A. S. Finogeev, A. Koshmin","doi":"10.18287/2541-7533-2024-23-1-147-159","DOIUrl":"https://doi.org/10.18287/2541-7533-2024-23-1-147-159","url":null,"abstract":"Six alloys of the Al-Ca-Zn-Mg system with additives of copper, manganese, iron and silicon were studied in order to simulate the composition of an alloy prepared on the basis of secondary aluminum. The alloys were made in the form of ingots with dimensions of 140×200×20 mm that were subjected to subsequent deformation treatment by hot rolling from a thickness of 20 mm to a thickness of 1 mm, and then cold-rolled sheets with a thickness of 0.5 mm were obtained from them. A cylindrical ingot with a diameter of 40 mm and a length of 200 mm was also made. Rods with a diameter of 14 mm were obtained from it by radial displacement rolling. Hot deformation treatment of ingots was carried out at a temperature of 450°C without prior homogenizing annealing. Cast and deformed specimens were examined using optical and scanning electron microscopy. No coarse acicular particles of iron- and silicon-containing phases, as well as any other coarse intermetallides, were found in the microstructure of the specimens. Mechanical tests were carried out using the method of uniaxial tension of deformed semi-finished products that were not subjected to additional strengthening heat treatment. According to the test results, an alloy of optimal composition was selected. The possibility of obtaining products from high-strength and high-tech aluminum-calcium alloy based on secondary raw materials without the use of homogenization and quenching was established.","PeriodicalId":265584,"journal":{"name":"VESTNIK of Samara University. Aerospace and Mechanical Engineering","volume":" 37","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140692774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method of scanning thin surfaces in repairing gas turbine blades 维修燃气轮机叶片时扫描薄表面的方法

VESTNIK of Samara University. Aerospace and Mechanical Engineering Pub Date : 2023-12-28 DOI: 10.18287/2541-7533-2023-22-4-112-124

D. I. Kotlyar, A. N. Lomanov

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