Spacecrafts & Technologies最新文献_第5页

Strategic planning of the company's development path through the development and manufacture of a ground segment of satellite communications 战略规划公司的发展路径，通过研制制造地面通信卫星段

Spacecrafts & Technologies Pub Date : 2022-09-26 DOI: 10.26732/j.st.2022.3.07

M. A. Dremukhin, V. N. Nagovitsin

{"title":"Strategic planning of the company's development path through the development and manufacture of a ground segment of satellite communications","authors":"M. A. Dremukhin, V. N. Nagovitsin","doi":"10.26732/j.st.2022.3.07","DOIUrl":"https://doi.org/10.26732/j.st.2022.3.07","url":null,"abstract":"The creation of rocket and space production led to the powerful development of the industrial potential of the region and its individual cities. Therefore, the development of this direction is an urgent task. The article proposes to create an additional direction for the development and manufacture of large-sized antenna reflectors for ground antenna stations. As a material in the manufacture of segments and components of the reflector, use composite materials and the formation of products is carried out by a relatively inexpensive method according to the principle of vacuum infusion. This direction contributes to the creation of sustainable development of the enterprise, including the education system, the fundamental and applied scientific industry, as well as maintaining the competitiveness of manufactured products, which will significantly expand the presence of the enterprise in the world market. Thus, work in this direction is a very promising area of activity, which will contribute to the innovative development of the enterprise, the transformation of the structure of production, taking into account market relations and will also make a significant contribution to the economy of the region.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127117864","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 of mechanical properties of spatial truss structures sections 空间桁架结构截面力学性能分析

Spacecrafts & Technologies Pub Date : 2022-09-26 DOI: 10.26732/j.st.2022.3.03

S. A. Zommer, A. P. Kravchunovsky

{"title":"Analysis of mechanical properties of spatial truss structures sections","authors":"S. A. Zommer, A. P. Kravchunovsky","doi":"10.26732/j.st.2022.3.03","DOIUrl":"https://doi.org/10.26732/j.st.2022.3.03","url":null,"abstract":"The paper presents the results of computational study of sections of spatial truss structures. They can form large supporting structures on spacecraft to place onboard equipment. The calculations were carried out by the finite element method in FEMAP with Nastran. The chosen section, the object of study, is a set of straight rods rigidly connected at the nodes in such a way that the cross section of the truss structure is a triangle. Calculation models, procedures for calculation and results analysis are presented. The purpose of the calculation is to determine how the relative position of the rods in the structural scheme affects the mechanical properties of the structure. The main criterion for strength estimating was the magnitude of the stresses derived by load. Stiffness was determined by the value of the first natural frequency. The sequential addition of rods and varying their connection allow modifying the structural schemes of truss structures. Next, the mechanical properties of the structure which effected by made modifications were evaluated again. Thus, six structural schemes of sections of the truss structure, obtained from the results of the study, have been developed. At the same time, the mass of the section, its shape and dimensions, the material and shape of the rods section as well as the initial and boundary conditions, remained unchanged. Based on the results of the analysis, someone can notice that each structure has unique mechanical characteristics. Thus, the paper gives recommendations for choosing a specific structural scheme of the section, depending on the required operating conditions and acceptable manufacturing technology. So, the criteria for choosing one of the above various sections of a truss structure or the principle of its building can be the complexity of manufacturing, maximum stiffness and strength, or minimum displacement. Structural schemes of sections with the highest strength and capability have been selected for use as part of spatial truss rods of spacecraft.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"20 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125886149","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

Analytical model of an arched elastomeric shock absorber for use in simulation modeling of systems 用于系统仿真建模的拱形弹性体减振器解析模型

Spacecrafts & Technologies Pub Date : 2022-09-26 DOI: 10.26732/j.st.2022.3.02

V. B. Sinilshchikov, S. A. Kunavich

{"title":"Analytical model of an arched elastomeric shock absorber for use in simulation modeling of systems","authors":"V. B. Sinilshchikov, S. A. Kunavich","doi":"10.26732/j.st.2022.3.02","DOIUrl":"https://doi.org/10.26732/j.st.2022.3.02","url":null,"abstract":"In this paper, a mathematical model for determining the longitudinal and transverse forces (reactions) of an arched elastomeric shock absorber when it is loaded along two axes (compression and transverse displacement of the supporting surfaces) is proposing. The reactions are presented as the sum of independent forces created by its two elastomeric walls. The webs are considered as beams that work in compression, bending and transverse shear, and can also lose stability. The model is phenomenological in nature. The structure of the model is such that in the case of pure compression of the shock absorber, the expression for the static axial reaction automatically satisfies the experimental static force characteristics of compression, which are given in the technical literature. The results of comparing the calculated data obtained by the developed model with the results of calculations in the Ansys Workbench 18.1 finite element analysis package are presented. In the region of deformations until the appearance of additional contact surfaces during buckling, a good agreement is observed. The developed analytical model of an arched elastomeric shock absorber can be used in calculations that require high speed (low computational complexity), in particular, for simulation modeling of systems in various software systems, such as Simulink.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124469485","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

Served space: new achievements and perspectives 服务空间:新成就与新展望

Spacecrafts & Technologies Pub Date : 2022-09-26 DOI: 10.26732/j.st.2022.3.06

V. B. Katkalov, M. L. Morozova

{"title":"Served space: new achievements and perspectives","authors":"V. B. Katkalov, M. L. Morozova","doi":"10.26732/j.st.2022.3.06","DOIUrl":"https://doi.org/10.26732/j.st.2022.3.06","url":null,"abstract":"The number of works aimed at developing technologies for services in space has increased significantly over the past five years. In addition to such industrial giants as Orbital-ATK, Northrop Grumman, MDA, Maxar Technologies, startups are also entering the service market that develop and demonstrate practically operating technologies. Given this trend, it is expected that maintenance in space will become a hot topic over the next few years. The article discusses the designed and operating service spacecraft of foreign countries, the state and directions of their development. Brief characteristics and capabilities of service spacecraft are given. The directions of solving the main tasks for the design and manufacture of promising service spacecraft are outlined. Satellites MEV-1 and MEV-2, manufactured by Northrop Grumman, ELSA-d, manufactured by Astroscale and SSTL, and See also OSAM-1 by Maxar Technologies, which allows robotic refueling in space and demonstrates the possibility of constructing large structures in space without direct human involvement. The results of a study carried out using available Internet sources are summarized and presented in this material. The purpose of the article is to analyze the need, ways and methods of development of services, to assess the prospects of the technologies used.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128845149","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 for calculating the forces required when bending pipes of small cross-section with a rectangular profile 矩形截面小管弯曲所需力的计算方法

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.05

V. V. Timofeev, I. V. Trifanov

{"title":"Method for calculating the forces required when bending pipes of small cross-section with a rectangular profile","authors":"V. V. Timofeev, I. V. Trifanov","doi":"10.26732/j.st.2022.2.05","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.05","url":null,"abstract":"Curved pipes of small cross-section rectangular profile (3,6x1,8 – 11x5,5 mm) are widely used in antenna-feeder devices of spacecraft. They are required to ensure dimensional accuracy, in the bending zone no more than ±0,05 mm, for this a choice of methods of technological modes is necessary. The object of the study is a small-section pipe billet made of copper M4, which must be bent to obtain a bending angle of 90°. The purpose of the study is to develop calculation methods necessary for the implementation of the technological process of bending small-section pipes, with justification of bending efforts. The paper analyzes the methods of bending rectangular pipes. The most rational method was chosen, bending using a rigid mandrel. Based on the selected bending method, a calculation model was compiled. The methodology and calculation algorithm have been developed and the analysis of the calculation results has been carried out. As a result of theoretical studies, with the help of calculations, the degree relationship of the effort of bending from the bending radius was revealed, the bending forces from the bending radius – the larger the bending radius, the less effort is required for bending. The calculation can be used to determine the size of the bending equipment and the bending force of the pipe of small cross-section, allows you to choose the most optimal mode of the technological process.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"49 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131639447","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

Application of electric thrusters in a spacecraft propulsion system 电动推进器在航天器推进系统中的应用

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.02

N. E. Kovalenko, A. Vnukov

{"title":"Application of electric thrusters in a spacecraft propulsion system","authors":"N. E. Kovalenko, A. Vnukov","doi":"10.26732/j.st.2022.2.02","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.02","url":null,"abstract":"The place of electric rocket thrusters in a spacecraft propulsion system is pointed out; the tasks for such propulsion system are described. The modern classification of electric thrusters is given, in accordance of that one there are four classes, dissimilar due to a nature of processes that impart a kinetic energy to a propellant: electrothermal, electrostatic, pulsed and magnetoplasmodynamic. In order to illustrate an electric rocket thrusters sate of art, examples different classes electric rocket thrusters for modern spacecrafts are presented; the technical characteristics, such a thrust, specific impulse, powered energy and efficiency are systematized. As a general electric rocket thrusters for spacecraft propulsion system were chosen electrostatic thrusters: stationary plasma (Hall thrusters) and ion thusters. For the different classes of electric rocket thrusters the common characteristics are defined as a set of: specific impulse (that describes thruster propellant efficiency), thrust cost (determines electric power consumption per unit thrust) and propellant type (combines thruster’s technical and economical characteristics). A necessity is stated to take into account the cost parameters of an electric rocket thruster design and a manufacturing during a propulsion system developing for a next generation spacecraft. The tasks are determined for the further research in the area of a techno-economic efficiency of electric rocket thrusters exploiting as a part of a spacecraft’s propulsion system.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126441537","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

Designing various-purpose subassemblies based on topological optimization 基于拓扑优化的多用途子组件设计

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.01

D. V. Sorokin, L. A. Babkina, O. Brazgovka

{"title":"Designing various-purpose subassemblies based on topological optimization","authors":"D. V. Sorokin, L. A. Babkina, O. Brazgovka","doi":"10.26732/j.st.2022.2.01","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.01","url":null,"abstract":"In recent decades, theory, algorithms and topological optimization technologies have been actively developing to solve problems in various fields. This technique is widely used and used in the design of subassemblies in engineering tasks. Of particular interest is the implementation of topological optimization methods in the aerospace industry. The main result of topological optimization is the determination of the effective distribution of material(s) in a part. The article provides an overview of recent developments related to the design of broad-purpose products, including for space and rocket technology based on topological optimization. The main algorithms for solving topological optimization problems are briefly listed. A separate emphasis in the review is placed on the opening qualitative new opportunities in modeling cellular and mesh structures, products from composite materials and multimaterials. Examples of topological optimization solutions that have already become classic are given. Many design results are closely related to the introduction of various modern additive manufacturing technologies. The review concludes with topical issues that will ensure future growth potential and prospects for the application of the entire range of design and additive production technologies in the aerospace industry.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132706064","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: 3

Principles of construction and application areas of small spacecraft based on unified space platforms 基于统一空间平台的小航天器结构原理及应用领域

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.08

V. M. Kulkov, S. O. Firsyuk, A. Yurov, S. A. Tuzikov, Yu. G. Egorov, S. Yoon

{"title":"Principles of construction and application areas of small spacecraft based on unified space platforms","authors":"V. M. Kulkov, S. O. Firsyuk, A. Yurov, S. A. Tuzikov, Yu. G. Egorov, S. Yoon","doi":"10.26732/j.st.2022.2.08","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.08","url":null,"abstract":"The conceptual options for small spacecraft on the basis of a unified space platform are analyzed, the areas of rational use of the unified space platform as part of the small spacecraft for solving a wide range of tasks, including monitoring of the Arctic regions, are explored. Methodical approaches are given to ensure the design analysis of circuit solutions of the unified space platform for small spacecraft remote sensing. The actual problem of selecting the standard size of the unified space platform, evaluating the effectiveness of its use, taking into account the necessary modernization for a specific payload, is being investigated. A technique and models for selecting the parameters for the modification of the remote sensing satellites have been developed. The application of the methodology makes it possible to determine the rational parameters for modifying the remote sensing spacecraft, to evaluate the impact of the features of design solutions and external relations on the total costs in the implementation of the project for the creation of the unified space platform. The relevance of research is related to the need to create competitive variants of small-sized spacecraft based on a unified space platform, designed to provide monitoring of high-latitude regions using the small spacecraft system.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123209107","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: 1

The effect of laser surface treatment of titanium samples on the adhesive strength of adhesive joints 钛样品激光表面处理对粘接接头粘接强度的影响

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.03

A. V. Girn, M. Rudenko, V. B. Taigin, A. E. Mikheev, D. V. Ravodina

{"title":"The effect of laser surface treatment of titanium samples on the adhesive strength of adhesive joints","authors":"A. V. Girn, M. Rudenko, V. B. Taigin, A. E. Mikheev, D. V. Ravodina","doi":"10.26732/j.st.2022.2.03","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.03","url":null,"abstract":"The article considers the strength of adhesive joints of specimens made of OT-4 titanium alloys, the surface of which has been treated with laser radiation. The paper presents the results of the dependence of the macro- and microgeometry of the obtained surface, chemical composition, wetting angle and adhesion strength of adhesive joints under shear on laser processing modes. The purpose of this work is to determine the optimal parameters of laser processing for obtaining high strength adhesive joints. The results obtained can be used for gluing spacecraft structural elements. The studies were carried out on the adhesive pair «Titan – Titan». Depending on the processing mode, characteristic surface textures were identified, which were combined into groups «B», «K» and «C». High-energy modes of laser surface treatment of samples before gluing lead to a significant increase in the strength characteristics of the adhesive joint (up to 70 %) due to an increase in the area of the gluing surface and mechanical locking of the adhesive in the microrelief of the texture of the samples. In addition, the use of this method, in comparison with mechanical and chemical methods, significantly increases the productivity of surface treatment.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116724714","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

Electromagnetic device for spacecraft orientation 航天器定向用电磁装置

Spacecrafts & Technologies Pub Date : 2022-06-24 DOI: 10.26732/j.st.2022.2.06

I. P. Popov

{"title":"Electromagnetic device for spacecraft orientation","authors":"I. P. Popov","doi":"10.26732/j.st.2022.2.06","DOIUrl":"https://doi.org/10.26732/j.st.2022.2.06","url":null,"abstract":"It is shown that the basis for the creation of an «artificial» mass which is not related to either the volume or the density of the material contained in an artificially inert object, is the requirement to satisfy Newton's second law. Of interest is the possibility of creating conditions for the emergence of an artificial moment of inertia. Since the principle of equivalence between inertial and gravitational mass does not apply to artificial mass, a device with artificial mass can be incomparably lighter than its mechanical counterpart with the same moment of inertia. This quality makes such a device particularly attractive for use in astronautics as light flywheels for orienting spacecraft. The purpose of the study is to analytically synthesize the artificial moment of inertia and establish the parameters that determine it. If an artificial electric flywheel is placed in a «black box» with the shaft outside, then no experiments can determine whether the artificial or «natural» flywheel is inside. The main advantages of an artificial or electromagnetic flywheel over a «natural» one are incomparably lower weight and the possibility of electrically controlling its moment of inertia over a wide range by changing the magnetic field (excitation) and capacitance.","PeriodicalId":119001,"journal":{"name":"Spacecrafts & Technologies","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122177343","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: 1

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Spacecrafts & Technologies最新文献