Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-46-54
D. Chulkov, A. Terekhin, M. Tipikin, A. Dumansky
Fiberglass products after molding and heat treatment are impregnated with the organosilicon resin to increase heat resistance followed by polymerization by heat treatment. A method for non-destructive quality control of the composite-profile products impregnation made of fiberglass plastics with the organosilicon resin is proposed. Results of experimental work are presented on the study of alteration in the longitudinal ultrasonic waves speed in structural elements of the aerial vehicles made of fiberglass before and after impregnation with the organosilicon resin, i.e. the MFSS-8 product. Besides, alteration in the longitudinal ultrasonic waves speed in the fiberglass samples violating the impregnation technology are demonstrated.
{"title":"Ultrasonic quality control of the aerial vehicle fiberglass structural elements impregnation with the organic resins","authors":"D. Chulkov, A. Terekhin, M. Tipikin, A. Dumansky","doi":"10.18698/0536-1044-2023-3-46-54","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-46-54","url":null,"abstract":"Fiberglass products after molding and heat treatment are impregnated with the organosilicon resin to increase heat resistance followed by polymerization by heat treatment. A method for non-destructive quality control of the composite-profile products impregnation made of fiberglass plastics with the organosilicon resin is proposed. Results of experimental work are presented on the study of alteration in the longitudinal ultrasonic waves speed in structural elements of the aerial vehicles made of fiberglass before and after impregnation with the organosilicon resin, i.e. the MFSS-8 product. Besides, alteration in the longitudinal ultrasonic waves speed in the fiberglass samples violating the impregnation technology are demonstrated.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130070262","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-14-24
A. Gorobtsov
The paper considers the generalized problem of the machines and mechanisms dynamic balance in terms of ensuring the given laws of altering reactions in the selected links. Representation of equations of the mechanical systems dynamics in the form of differential algebraic equations was used making it possible to obtain mathematical models of the nonlinear mechanical systems dynamics with the arbitrary structure of kinematic and force connections. With this approach, the constraint reactions are determined by algebraic equations from the system coordinates. The problem solution is based on changing the bonds selected reactions due to the impact on reactions in the other selected bonds by adding non-stationary terms to the selected bonds equation. Conditions for rigorous solution of the optimal control problem for a mechanical system are shown for the integral quality criterion not explicitly containing the control functions. The method is aimed at numerical models of the mechanical systems widely used in the programs for dynamic analysis of the coupled systems of bodies. Test examples are provided for manipulator, anthropomorphic robot and controlled suspension of a transport vehicle. The method was realized in the software package for simulating the controlled motion dynamics of the coupled systems of bodies.
{"title":"Dynamic balance generalized problem and the promising areas of its application","authors":"A. Gorobtsov","doi":"10.18698/0536-1044-2023-3-14-24","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-14-24","url":null,"abstract":"The paper considers the generalized problem of the machines and mechanisms dynamic balance in terms of ensuring the given laws of altering reactions in the selected links. Representation of equations of the mechanical systems dynamics in the form of differential algebraic equations was used making it possible to obtain mathematical models of the nonlinear mechanical systems dynamics with the arbitrary structure of kinematic and force connections. With this approach, the constraint reactions are determined by algebraic equations from the system coordinates. The problem solution is based on changing the bonds selected reactions due to the impact on reactions in the other selected bonds by adding non-stationary terms to the selected bonds equation. Conditions for rigorous solution of the optimal control problem for a mechanical system are shown for the integral quality criterion not explicitly containing the control functions. The method is aimed at numerical models of the mechanical systems widely used in the programs for dynamic analysis of the coupled systems of bodies. Test examples are provided for manipulator, anthropomorphic robot and controlled suspension of a transport vehicle. The method was realized in the software package for simulating the controlled motion dynamics of the coupled systems of bodies.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125819575","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-3-13
O. Burlachenko, O. Oganesyan
The paper considers possibilities of the digital technologies to control and manage each stage of the product lifecycle. The main software systems used to control and manage the product lifecycle at various stages are provided. Based on analyzing a number of scientific publications, assessment was made of the implementation level of such software products at each stage of the product lifecycle, and advantages of their introduction are presented. It is noted that mechanical engineering is the leader in implementing the appropriate digital technologies. The other industries are just adapting the previously developed technologies to specific conditions of the production process. However, certain issues of using modern digital technologies, in particular the blockchain, in relation to separate stages of the product lifecycle are still insufficiently studied. The basis of a new digital technology to control, manage and support the product lifecycle was developed, i.e. technology for selecting and transforming the necessary information into the product digital environment, in particular, in the mechanical engineering products in general. The essence of the proposed technology is briefly stated. Main differences from the existing blockchain technologies are listed regarding efficiency (since the software is constantly updated with more advanced versions) and incomplete data availability, which is due to maintaining the required level of security.
{"title":"Digital technology in information selection and transformation to control and support the product lifecycle","authors":"O. Burlachenko, O. Oganesyan","doi":"10.18698/0536-1044-2023-3-3-13","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-3-13","url":null,"abstract":"The paper considers possibilities of the digital technologies to control and manage each stage of the product lifecycle. The main software systems used to control and manage the product lifecycle at various stages are provided. Based on analyzing a number of scientific publications, assessment was made of the implementation level of such software products at each stage of the product lifecycle, and advantages of their introduction are presented. It is noted that mechanical engineering is the leader in implementing the appropriate digital technologies. The other industries are just adapting the previously developed technologies to specific conditions of the production process. However, certain issues of using modern digital technologies, in particular the blockchain, in relation to separate stages of the product lifecycle are still insufficiently studied. The basis of a new digital technology to control, manage and support the product lifecycle was developed, i.e. technology for selecting and transforming the necessary information into the product digital environment, in particular, in the mechanical engineering products in general. The essence of the proposed technology is briefly stated. Main differences from the existing blockchain technologies are listed regarding efficiency (since the software is constantly updated with more advanced versions) and incomplete data availability, which is due to maintaining the required level of security.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128652744","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-34-45
S. Zaides, H. Nguyen
The article presents the results of modeling and determining the influence of the parameters of reverse surface plastic deformation on the geometric characteristics of the plastic imprint and the pressure in the contact zone of the working tool under static and reverse impact. Using the software for 3D design SOLID WORKS-2019 and computational modeling in ANSYS-19.1, a finite element model of the contact zone was built to determine the geometric characteristics of the plastic indentation and the contact pressure between the working tool and the surface of the workpiece, depending on the geometry of the working tool, reversing frequency its rotation, the initial angle of installation and the amplitude of the angle of reverse rotation of the working tool. Based on the obtained results, to increase the pressure in the contact zone of the working tool with the workpiece, which affects the degree of hardening and smoothing of microroughnesses of the workpiece surface and the formation of compressive residual stresses, it is recommended to use the following parameters and hardening modes: working roller with a diameter of 20–30 mm, with a profile radius of 2 –2.5 mm, distance between tops of working roller profile 1.5–2 mm, initial installation angle of the working roller 90о, amplitude of the reverse rotation angle of the working roller ±6 – ±8о and reverse speed of the working roller 200–240 double strokes/min.
{"title":"Evaluation of the imprint geometric parameters and pressure in the working tool contact zone under the reversible surface plastic deformation","authors":"S. Zaides, H. Nguyen","doi":"10.18698/0536-1044-2023-3-34-45","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-34-45","url":null,"abstract":"The article presents the results of modeling and determining the influence of the parameters of reverse surface plastic deformation on the geometric characteristics of the plastic imprint and the pressure in the contact zone of the working tool under static and reverse impact. Using the software for 3D design SOLID WORKS-2019 and computational modeling in ANSYS-19.1, a finite element model of the contact zone was built to determine the geometric characteristics of the plastic indentation and the contact pressure between the working tool and the surface of the workpiece, depending on the geometry of the working tool, reversing frequency its rotation, the initial angle of installation and the amplitude of the angle of reverse rotation of the working tool. Based on the obtained results, to increase the pressure in the contact zone of the working tool with the workpiece, which affects the degree of hardening and smoothing of microroughnesses of the workpiece surface and the formation of compressive residual stresses, it is recommended to use the following parameters and hardening modes: working roller with a diameter of 20–30 mm, with a profile radius of 2 –2.5 mm, distance between tops of working roller profile 1.5–2 mm, initial installation angle of the working roller 90о, amplitude of the reverse rotation angle of the working roller ±6 – ±8о and reverse speed of the working roller 200–240 double strokes/min.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122571451","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-73-89
M. Sahranavard, Y. Galerkin, A. Drozdov, L. Marenina
Countless combinations of sizes and shapes of the flow path could ensure the specified flow rate and pressure ratio of the axial compressor stage. Programs based on the mathematical models are an effective tool in initial design and preliminary selection of the optimal option. The RROK-GPD-22 software program is briefly being described, it solves the problem on the basis of the pressure loss model and deflection capacity of the A. Komarov lattice, theoretic rigorous calculation of oblique and direct shocks, as well as empirical equations and coefficients. Models were checked by comparison with data on the Rotor 37 NASA test stage. Stages were calculated with different ratio of the cross-sectional area at the outlet of the impeller to that at its inlet and stages with the hub-tip ratios of 0.400 ... 0.728 with different swirl at the impeller inlet. Results are provided in determining the hub-tip ratio influence on the efficiency, pressure ratio and specific stage performance.
{"title":"Hub ratio influence on the stage parameters","authors":"M. Sahranavard, Y. Galerkin, A. Drozdov, L. Marenina","doi":"10.18698/0536-1044-2023-3-73-89","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-73-89","url":null,"abstract":"Countless combinations of sizes and shapes of the flow path could ensure the specified flow rate and pressure ratio of the axial compressor stage. Programs based on the mathematical models are an effective tool in initial design and preliminary selection of the optimal option. The RROK-GPD-22 software program is briefly being described, it solves the problem on the basis of the pressure loss model and deflection capacity of the A. Komarov lattice, theoretic rigorous calculation of oblique and direct shocks, as well as empirical equations and coefficients. Models were checked by comparison with data on the Rotor 37 NASA test stage. Stages were calculated with different ratio of the cross-sectional area at the outlet of the impeller to that at its inlet and stages with the hub-tip ratios of 0.400 ... 0.728 with different swirl at the impeller inlet. Results are provided in determining the hub-tip ratio influence on the efficiency, pressure ratio and specific stage performance.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"229 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116434247","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-25-33
P. A. Golovkin
The paper considers critical features of the chemical composition of the 2NiCuMn 38-2V alloy bars material, which could affect vacuum purity of the electrovacuum devices working area. Taking into consideration peculiarities of the electrovacuum devices manufacture technology, it is shown that the use of cold-drawn bars in manufacturing parts of their working area is technically unreasonable. It is noted that instead of the cold-drawn bars, bars obtained by hot rotational forging could be used.
{"title":"Justification of the method for production of the 2NiCuMn 38-2V alloy bars to manufacture parts for the electrovacuum devices working area","authors":"P. A. Golovkin","doi":"10.18698/0536-1044-2023-3-25-33","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-25-33","url":null,"abstract":"The paper considers critical features of the chemical composition of the 2NiCuMn 38-2V alloy bars material, which could affect vacuum purity of the electrovacuum devices working area. Taking into consideration peculiarities of the electrovacuum devices manufacture technology, it is shown that the use of cold-drawn bars in manufacturing parts of their working area is technically unreasonable. It is noted that instead of the cold-drawn bars, bars obtained by hot rotational forging could be used.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131237046","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-90-100
A.P. Ustinova, Yu.L. Siuskina, R. Peshkov
Reducing mass of the launch vehicle components structure to increase the payload mass launched into orbit is one of the main areas in developing the space services market. Modern designs of the launch vehicles require extremely high fuel mass fraction, which necessitates introduction of the low-density materials. Fuel tanks could count for 70...80% of the total product volume, which results in the development of tanks for the cryogenic fuel obtaining decisive importance in design and development of the new type of launch vehicles. Introduction of the composite materials in designing a cryogenic fuel tank makes it possible to lower its mass by 30% compared to a reference aluminum tank, which, accordingly, allows increasing the inserted payload mass. Review of the methods used in manufacturing the cryogenic composite fuel tanks is presented. Liner manufacturing technology and its material are proposed, taking into account the temperature difference during shaping and its interaction with the cryogenic fuel. Composite material and method for manufacturing the composite tank are selected. Design calculation of the composite cryogenic tank was carried out.
{"title":"Evaluation of the possibility to use composite material in the structure of the rocket stage cryogenic conical tank","authors":"A.P. Ustinova, Yu.L. Siuskina, R. Peshkov","doi":"10.18698/0536-1044-2023-3-90-100","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-90-100","url":null,"abstract":"Reducing mass of the launch vehicle components structure to increase the payload mass launched into orbit is one of the main areas in developing the space services market. Modern designs of the launch vehicles require extremely high fuel mass fraction, which necessitates introduction of the low-density materials. Fuel tanks could count for 70...80% of the total product volume, which results in the development of tanks for the cryogenic fuel obtaining decisive importance in design and development of the new type of launch vehicles. Introduction of the composite materials in designing a cryogenic fuel tank makes it possible to lower its mass by 30% compared to a reference aluminum tank, which, accordingly, allows increasing the inserted payload mass. Review of the methods used in manufacturing the cryogenic composite fuel tanks is presented. Liner manufacturing technology and its material are proposed, taking into account the temperature difference during shaping and its interaction with the cryogenic fuel. Composite material and method for manufacturing the composite tank are selected. Design calculation of the composite cryogenic tank was carried out.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130946018","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}
Pub Date : 2023-03-01DOI: 10.18698/0536-1044-2023-3-55-72
V. Pozhbelko
The paper considers theory and practice of structural synthesis, classification of assembly and construction of a complete atlas of the new class multi-loop mechanisms, where the multi-hinge linkages are made with all hinges positioned on the same line, such mechanisms are called the orthogonal mechanisms. Original universal method is proposed for structural synthesis of these multi-hinge linkage mechanisms with a given large number of independent closed loops in the kinematic chain to create a variety of mechanisms with the given different number of degrees of freedom of their drive. Using this method to create new efficient multilink mechanisms does not require introduction of complex computer programs and consideration of tens of thousands of the Assur groups in order to build complete atlases in closed chains of the parallel structure mechanisms reliably not containing any harmful redundant links. This makes it possible to solve the problem of structural synthesis of the self-adjusting orthogonal mechanisms, including both single and multiple hinged joints of the lever links. Based on the orthogonal structural synthesis proposed algorithm, a complete atlas of 20 non-isomorphic three-circuit orthogonal eight-link basic kinematic chains was constructed for the first time, which formed the basis for synthesizing 27 new schemes of single-moving flat hinged mechanisms with simple hinges. This increases the possible composition of their database to 180 closed structures. Effectiveness of the proposed universal synthesis method is confirmed by examples of inventions of various multi-loop orthogonal self-adjusting lever mechanisms and manipulators of the parallel structure.
{"title":"Universal structural method in synthesis and constructing the complete atlas of the multiloop orthogonal structures of the self-adjusting linkages in mechanical engineering","authors":"V. Pozhbelko","doi":"10.18698/0536-1044-2023-3-55-72","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-3-55-72","url":null,"abstract":"The paper considers theory and practice of structural synthesis, classification of assembly and construction of a complete atlas of the new class multi-loop mechanisms, where the multi-hinge linkages are made with all hinges positioned on the same line, such mechanisms are called the orthogonal mechanisms. Original universal method is proposed for structural synthesis of these multi-hinge linkage mechanisms with a given large number of independent closed loops in the kinematic chain to create a variety of mechanisms with the given different number of degrees of freedom of their drive. Using this method to create new efficient multilink mechanisms does not require introduction of complex computer programs and consideration of tens of thousands of the Assur groups in order to build complete atlases in closed chains of the parallel structure mechanisms reliably not containing any harmful redundant links. This makes it possible to solve the problem of structural synthesis of the self-adjusting orthogonal mechanisms, including both single and multiple hinged joints of the lever links. Based on the orthogonal structural synthesis proposed algorithm, a complete atlas of 20 non-isomorphic three-circuit orthogonal eight-link basic kinematic chains was constructed for the first time, which formed the basis for synthesizing 27 new schemes of single-moving flat hinged mechanisms with simple hinges. This increases the possible composition of their database to 180 closed structures. Effectiveness of the proposed universal synthesis method is confirmed by examples of inventions of various multi-loop orthogonal self-adjusting lever mechanisms and manipulators of the parallel structure.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130762784","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}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-63-72
V. L. Blinov, G. Deryabin
The paper considers methods of the gas turbine plant power designed for natural gas transportation and reveals their drawbacks. A program in the Python language was created to study applicability of the machine-learning methods to determine the plant power under operating conditions. Archival gas-dynamic parameters registered by the plant automatic control system were used as the initial data. Forecast quality of the machine-learning models was estimated depending on different sets of the feature parameters. Recommendations on the models use are provided; and the method error was determined. Hypothesis on applicability of models learned based on data of a single engine to estimate the power of the other engines of the same type was refuted. Machine-learning methods could be used to determine the gas turbine plant power even in the absence of part of the initial data, which is the main advantage over traditional methods.
{"title":"Using machine-learning methods in determination of the pipe line gas turbine plant effective power","authors":"V. L. Blinov, G. Deryabin","doi":"10.18698/0536-1044-2023-2-63-72","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-63-72","url":null,"abstract":"The paper considers methods of the gas turbine plant power designed for natural gas transportation and reveals their drawbacks. A program in the Python language was created to study applicability of the machine-learning methods to determine the plant power under operating conditions. Archival gas-dynamic parameters registered by the plant automatic control system were used as the initial data. Forecast quality of the machine-learning models was estimated depending on different sets of the feature parameters. Recommendations on the models use are provided; and the method error was determined. Hypothesis on applicability of models learned based on data of a single engine to estimate the power of the other engines of the same type was refuted. Machine-learning methods could be used to determine the gas turbine plant power even in the absence of part of the initial data, which is the main advantage over traditional methods.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128396332","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}
Pub Date : 2023-02-01DOI: 10.18698/0536-1044-2023-2-84-95
Lin Htet Tun, P. Prosuntsov
The paper considers the method of designing the power set of the DA-62 aircraft tail section, which includes the stages of determining loads acting on the tail section, selecting position, shape and structure of the power elements, characteristics of the composite materials, from which they were made. The design process took into account simultaneous effect of aerodynamic and mass-inertial loads on the aircraft structure during various maneuvers. A feature of the method to determine geometric dimensions and shape of frames is introducing a combination of parametric and topological optimization techniques. To increase the structure weight efficiency, the problem of optimizing the scheme for laying the polymer composite material was solved. Physical and mechanical characteristics of the composite materials were determined by theoretical calculation using the multi-scale simulation principle.
{"title":"Method of designing the composite load-bearing elements of the fuselage tail section","authors":"Lin Htet Tun, P. Prosuntsov","doi":"10.18698/0536-1044-2023-2-84-95","DOIUrl":"https://doi.org/10.18698/0536-1044-2023-2-84-95","url":null,"abstract":"The paper considers the method of designing the power set of the DA-62 aircraft tail section, which includes the stages of determining loads acting on the tail section, selecting position, shape and structure of the power elements, characteristics of the composite materials, from which they were made. The design process took into account simultaneous effect of aerodynamic and mass-inertial loads on the aircraft structure during various maneuvers. A feature of the method to determine geometric dimensions and shape of frames is introducing a combination of parametric and topological optimization techniques. To increase the structure weight efficiency, the problem of optimizing the scheme for laying the polymer composite material was solved. Physical and mechanical characteristics of the composite materials were determined by theoretical calculation using the multi-scale simulation principle.","PeriodicalId":198502,"journal":{"name":"Proceedings of Higher Educational Institutions. Маchine Building","volume":"1993 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128631733","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}
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