Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
4.9
2.7
Journals
Symmetry
Special Issues
Symmetry and Asymmetry in Complex Technical Systems
share announcement

Symmetry and Asymmetry in Complex Technical Systems

A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Engineering and Materials".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 4396

Special Issue Editor

Prof. Dr. Andry Sedelnikov

E-Mail Website
Guest Editor
Department of Space Engineering, Samara National Research University, Samara 443086, Russia
Interests: aerospace engineering; applied mechanics; heat transfer; modeling and simulation; signal processing; dynamics of spacecraft; testing of aerospace systems
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Complex technical systems are an integral part of our lives. They are created by people and expand the possibilities of exploring the world around us. In this Special Issue, we want to collect high-quality peer-reviewed articles on all aspects of designing, manufacturing and operating complex technical systems. This affects a wide range of issues around modeling, creating new materials and technologies, conducting experiments and processing experimental data, managing systems, analyzing operational experience, and so on. Works from various fields where complex technical systems are used are welcomed. We kindly invite authors to share their important results.

Please note that all submitted papers must be within the general scope of Symmetry.

Prof. Dr. Andry Sedelnikov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Symmetry is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • complex technical systems
  • modeling and simulation
  • general engineering
  • applied mathematics and computing
  • control and systems engineering
  • materials engineering
  • technology for complex technical systems
  • testing of complex technical systems
  • experiments in complex technical systems

Published Papers (4 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

12 pages, 1482 KiB  
Article
Investigation of Perturbations Arising from Temperature Shock with a Symmetrical Arrangement of Flexible Elements of a Small Spacecraft
by Alexei Bormotov and Denis Orlov
Symmetry 2023, 15(7), 1331; https://doi.org/10.3390/sym15071331 - 29 Jun 2023
Viewed by 728
Abstract
This paper investigates the effect of a temperature shock on a small spacecraft with symmetrically arranged flexible elements. A two-dimensional thermoelasticity problem is posed. The disturbing effect of temperature shock on a small spacecraft has been determined. The assessment of the main disturbing [...] Read more.
This paper investigates the effect of a temperature shock on a small spacecraft with symmetrically arranged flexible elements. A two-dimensional thermoelasticity problem is posed. The disturbing effect of temperature shock on a small spacecraft has been determined. The assessment of the main disturbing factors arising from the temperature shock of flexible elements of a small spacecraft was carried out. Approximate dependences were obtained for the components of the displacement vector of the flexible element points. Numerical simulation was carried out for the symmetric scheme of the small spacecraft with two and four flexible elements. The dependence of the inertia force on temperature shock for the simulated small spacecraft at various initial deflections of the flexible element was constructed. Conclusions were drawn about the significance of the temperature shock influence on the dynamics of a small spacecraft. The results obtained were compared with the results of other studies and can be used in solving problems of remote sensing of the Earth and the implementation of gravity-sensitive processes on board small spacecraft. Full article
(This article belongs to the Special Issue Symmetry and Asymmetry in Complex Technical Systems)
►▼ Show Figures

Figure 1

15 pages, 3237 KiB  
Article
The Symmetric Formulation of the Temperature Shock Problem for a Small Spacecraft with Two Elastic Elements
by Andrey Sedelnikov, Denis Orlov, Valeria Serdakova and Alexandra Nikolaeva
Symmetry 2023, 15(1), 172; https://doi.org/10.3390/sym15010172 - 06 Jan 2023
Cited by 9 | Viewed by 952
Abstract
The paper considers the problem of a small-spacecraft elastic elements’ temperature shock that occurs when the spacecraft immerses into the Earth’s shadow or comes out of it. A small spacecraft with two elastic elements is simulated. In the first approximation, such a problem [...] Read more.
The paper considers the problem of a small-spacecraft elastic elements’ temperature shock that occurs when the spacecraft immerses into the Earth’s shadow or comes out of it. A small spacecraft with two elastic elements is simulated. In the first approximation, such a problem is considered to be a symmetric problem. Estimations of disturbing factors from the temperature shock in a symmetric formulation are obtained. The differences from the results for a small spacecraft with a single elastic element are analyzed. The results of the work can be used for promising small technological spacecraft development, as well as for solving problems of space debris removal and remote sensing of the Earth. Full article
(This article belongs to the Special Issue Symmetry and Asymmetry in Complex Technical Systems)
►▼ Show Figures

Figure 1

15 pages, 1139 KiB  
Article
Method of an Analysis of the Nonlinear Monotonic Simultaneous Stability of Two Orientation Angles of an Asymmetric Spacecraft in the Martian Atmosphere
by Vladislav V. Lyubimov
Symmetry 2022, 14(12), 2589; https://doi.org/10.3390/sym14122589 - 07 Dec 2022
Cited by 2 | Viewed by 828
Abstract
One of the most relevant and practically important directions in the development of the modern mathematical theory of stability is the development of effective methods for analyzing the nonlinear stability for solutions of dynamical systems with several degrees of freedom. The aim of [...] Read more.
One of the most relevant and practically important directions in the development of the modern mathematical theory of stability is the development of effective methods for analyzing the nonlinear stability for solutions of dynamical systems with several degrees of freedom. The aim of this paper is to develop a new qualitative method for analyzing the nonlinear monotonic simultaneous stability of the solutions of a dynamical system of equations describing the motion of a solid body with two angles of orientation. The method is based on the application of the classical mathematical investigation method for the function of one independent variable and combinatorics. The method assumes that two analyzed functions describing the evolution of two orientation angles are defined and are twice continuously differentiable over the considered interval of change of the independent variable. The main result of the paper is the determination of the number of all different cases of nonlinear monotone simultaneous stability. The paper shows how, based on the application of this method, it is possible to solve a practically significant problem of qualitative analysis of the simultaneous nonlinear monotonic stability of two orientation angles of an asymmetric spacecraft performing an uncontrolled rotation in the Martian atmosphere. In conclusion, it should be noted that the presented method can be used to analyze the nonlinear monotonic simultaneous stability of solutions in various continuous dynamic systems. Full article
(This article belongs to the Special Issue Symmetry and Asymmetry in Complex Technical Systems)
►▼ Show Figures

Figure 1

13 pages, 2342 KiB  
Article
Method of an Asymptotic Analysis of the Nonlinear Monotonic Stability of the Oscillation at the Problem of Damping of the Angle of Attack of a Symmetric Spacecraft
by Vladislav V. Lyubimov
Symmetry 2022, 14(10), 2135; https://doi.org/10.3390/sym14102135 - 13 Oct 2022
Cited by 4 | Viewed by 974
Abstract
One of the current directions in the development of the modern theory of oscillations is the elaboration of effective methods for analyzing the stability of solutions of dynamical systems. The aim of the work is to develop a new asymptotic method for studying [...] Read more.
One of the current directions in the development of the modern theory of oscillations is the elaboration of effective methods for analyzing the stability of solutions of dynamical systems. The aim of the work is to develop a new asymptotic method for studying the nonlinear monotonic stability of the amplitude of plane oscillations in a dynamic system of equations with one fast phase. The method is based on the use of the method of variation of an arbitrary constant, the averaging method, and the classical method of mathematical research of the function of one independent variable. It is assumed that the resulting approximate analytical function is defined and twice continuously differentiable on the entire considered interval of change of the independent variable. It describes the nonlinear and monotonic evolution of the oscillation amplitude on the entire considered interval of change of the independent variable. In the paper, this method is applied to the problem of nonlinear monotonic aerodynamic damping of the amplitude of oscillations of the angle of attack during the descent of a symmetric spacecraft in the atmosphere of Mars. The method presented in this paper made it possible to find all characteristic cases of nonlinear monotonic stability and instability of the oscillation amplitude of the angle of attack. In addition, one should speak of a symmetrical quantity of different cases of stability and instability, located on different sides of the zero value of the first average derivative of the angle of attack. Full article
(This article belongs to the Special Issue Symmetry and Asymmetry in Complex Technical Systems)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-4
Back to TopTop