Cosmic Research最新文献_第2页

Radiation Resistance of a Spacecraft Coating Obtained by 3D Printing 通过三维打印获得航天器涂层的抗辐射性能

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600306

M. M. Mikhailov, S. A. Artishchev, A. N. Lapin, S. A. Yuryev, V. A. Goronchko, N. S. Trufanova, O. A. Mikhailova, D. S. Fedosov

引用次数: 0

A Model of High-Energy Electron Flows in GLONASS Orbits 格洛纳斯轨道上的高能电子流模型

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600227

P. I. Shustov, A. A. Petrukovich, A. V. Artemyev

引用次数: 0

On the Temperatures of Aerodynamic Heating of Spherical Microparticles Modeling Microbiological Objects Entering the Earth’s Atmosphere at Cosmic Velocities 论以宇宙速度进入地球大气层的微生物物体模型球形微粒的空气动力加热温度

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s001095252460029x

E. K. Kolesnikov, S. V. Chernov

{"title":"On the Temperatures of Aerodynamic Heating of Spherical Microparticles Modeling Microbiological Objects Entering the Earth’s Atmosphere at Cosmic Velocities","authors":"E. K. Kolesnikov, S. V. Chernov","doi":"10.1134/s001095252460029x","DOIUrl":"https://doi.org/10.1134/s001095252460029x","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>A mathematical model has been developed describing the motion in near–Earth space (NES) and aerodynamic heating upon entry into the atmosphere of spherical microparticles of carbon (graphite) with radii from 0.5 to 3 μm, modeling spores of terrestrial bacteria, as well as spores of hypothetical bacteria of extraterrestrial origin. The model is based on a joint numerical solution of the equations of motion in the NES of the specified model microbiological object (MBO) and the heat balance equation describing the change in the internal energy of the MBO. The calculated data obtained show that the maximum temperatures of aerodynamic heating of spores of terrestrial bacteria separating from the surfaces of large low-orbit objects of artificial origin are significantly lower than the maximum temperature of survival of spores of terrestrial bacteria during pulsed heating. In addition, the results of numerical experiments give grounds for the assumption that the spores of hypothetical extraterrestrial bacteria with a size of no more than 1 μm are able to withstand aerodynamic heating when entering the Earth’s atmosphere at speeds greater than both the second and third cosmic speeds.</p>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Control of the Process of Rapprochement of a Tether System with a Passive Space Object in a Near-Circular Orbit 控制系绳系统与近圆轨道上被动空间物体的和睦过程

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600239

Yu. M. Zabolotnov, Changqing Wang, Zheng Min

{"title":"Control of the Process of Rapprochement of a Tether System with a Passive Space Object in a Near-Circular Orbit","authors":"Yu. M. Zabolotnov, Changqing Wang, Zheng Min","doi":"10.1134/s0010952524600239","DOIUrl":"https://doi.org/10.1134/s0010952524600239","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The article deals with the control of the process of rapprochement of a tether system with a passive space object (cargo, space debris, etc.) in an almost circular near-Earth orbit. It is assumed that the active spacecraft, which includes a tether system with a capture device (not deployed), is located in a close (relative to the orbit of the cargo) orbit, which was formed using some known long-range guidance algorithm. It is assumed that the active spacecraft, which includes a tether system with a capture device (not deployed), is located in a close (relative to the orbit of the cargo) orbit, which was formed using some known long-range guidance algorithm. The position of the dummy point is chosen based on the fact that, after the deployment of the tether system, the capture device appears in the vicinity of the cargo immediately or after some small portion of passive movement in orbit. The control of the process of approaching the spacecraft with a fictitious point in the spatial case is constructed using the Bellman dynamic programming principle using a linearized system. Continuous control is used with the help of jet engines with finite thrust. The components of the reactive forces for which the control is being constructed are directed along the transversal and binormal in the orbital coordinate system. It is assumed that the unavoidable guidance errors can be corrected by changing the length of the tether or in some other way. A numerical example of modeling the processes under consideration using nonlinear equations of motion is given illustrating the proposed control scheme.</p>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the Asymptotic Behavior of the Secular Perturbation Function in the Circular Restricted Three-Body Problem 论圆形受限三体问题中的周期扰动函数的渐近行为

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600252

P. S. Krasilnikov, A. V. Dobroslavskiy

{"title":"On the Asymptotic Behavior of the Secular Perturbation Function in the Circular Restricted Three-Body Problem","authors":"P. S. Krasilnikov, A. V. Dobroslavskiy","doi":"10.1134/s0010952524600252","DOIUrl":"https://doi.org/10.1134/s0010952524600252","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The asymptotic behavior of the secular perturbation function expanded in a power series in μ, the ratio of the semimajor axes of the massless point (asteroid) and Jupiter, is studied in the restricted spatial circular three-body problem. It is assumed that <span>(mu < 1)</span> (internal case). A new derivation of the expansion of a secular perturbation function into a power series with coefficients expressed through Gauss and Clausen functions is described based on Parseval’s formula. For different values of μ at fixed values of the Lidov-Kozai constant, the radius of convergence of the reduced series, the areas of convergence and divergence are described in the plane of osculating elements <i>e</i>, ω. It is shown that power series is asymptotic in the sense of Poincaré in divergence regions, and that truncating the series after a 70 number of terms provides an high value approximation to a secular perturbation function. It is shown that the asymptotic properties of the series deteriorate on the nonanalyticity curves of secular perturbation function and completely disappear in a small neighborhood of <span>(mu = 1)</span>. The asymptotic nature of the series allows, using ordinary methods of perturbation theory, to study the evolution of Keplerian orbital elements for all values of <span>(mu )</span> from the interval [0, 1), excluding the case <span>(mu approx 1)</span>.</p>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-Thrust Trajectory Optimization in Kustaanheimo–Stiefel Variables Kustaanheimo-Stiefel 变量中的低推力轨迹优化

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600288

K. R. Korneev, S. P. Trofimov

引用次数: 0

On Dumbbell Motions in the Generalized Circular Sitnikov Problem 论广义圆西特尼科夫问题中的哑铃运动

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-06-04 DOI: 10.1134/s0010952524600264

P. S. Krasilnikov, A. E. Baikov

{"title":"On Dumbbell Motions in the Generalized Circular Sitnikov Problem","authors":"P. S. Krasilnikov, A. E. Baikov","doi":"10.1134/s0010952524600264","DOIUrl":"https://doi.org/10.1134/s0010952524600264","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The translational–rotational motions of a symmetrical dumbbell are considered in a circular restricted three-body problem where two primaries of equal mass move in circular orbits about common barycenter. A new type of motion is described for the dumbbell whereby its barycenter moves along the normal to the plane of rotation of the two primaries, whilst the dumbbell itself rotates continuously around the normal, forming a constant angle of π/2 with it (the invariant manifold “gravitational propeller”). It is shown that this manifold includes several two-dimensional invariant submanifolds. The dynamics of a dumbbell on these submanifolds is described. Relative equilibria were found on a “gravitational propeller” when the dumbbell mass center rests at the barycenter of the system, while the dumbbell is oriented parallel to the axis connecting the primaries or perpendicular to it. The stability of these equilibria is investigated. Small spatial nonlinear oscillations on a “gravitational propeller” manifold in the vicinity of a stable relative equilibrium were studied for the dumbbell of infinitesimal length. It is shown that these oscillations have the nature of a nonlinear parametric resonance, which sets a “slow” amplitude modulation of “fast” harmonic oscillations along the angle of rotation of the dumbbell.</p>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141256251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Solar Energetic Proton Fluxes in Near-Earth Space on March 13–23, 2023 2023 年 3 月 13-23 日近地空间的太阳能量质子通量

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-04-15 DOI: 10.1134/s0010952523600282

N. A. Vlasova, G. A. Bazilevskaya, E. A. Ginzburg, E. I. Daibog, V. V. Kalegaev, K. B. Kaportseva, Yu. I. Logachev, I. N. Myagkova

{"title":"Solar Energetic Proton Fluxes in Near-Earth Space on March 13–23, 2023","authors":"N. A. Vlasova, G. A. Bazilevskaya, E. A. Ginzburg, E. I. Daibog, V. V. Kalegaev, K. B. Kaportseva, Yu. I. Logachev, I. N. Myagkova","doi":"10.1134/s0010952523600282","DOIUrl":"https://doi.org/10.1134/s0010952523600282","url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The results of studying the fluxes of solar protons with energies greater than 5 MeV in near-Earth space on March 13–23, 2023, are presented. The features of the period under study are no visible solar flare with which the beginning of the event could be associated and an untypical time profile of proton fluxes, as well as a long duration of the existence of solar proton fluxes in near-Earth space. An attempt was made to explain the sources of the observed different variations in particle fluxes and to understand what happened on the Sun and in the near-Earth space. The source of solar protons on March 13, 2023, was an explosive process on the back side of the Sun from the Earth, registered as a coronal mass ejection of very high power. The reason for the long and complex time profile of solar protons was the contribution of particle acceleration processes on the Sun and in the interplanetary medium, as well as the modulation of particle fluxes by the structures of the interplanetary magnetic field. A possible scenario has been proposed to explain the existence of increased fluxes of solar particles on March 15–23, 2023: the formation of a heliospheric structure, this being a closed trap region formed by two interplanetary coronal mass ejections and regions of interaction of high-speed and slow solar wind streams. The study uses experimental data obtained from the <i>Solar Orbiter</i> spacecraft and from spacecraft located near the <i>L</i>1 point of the Earth–Sun system (<i>ACE</i> and <i>DSCOVR</i>) and in geostationary orbit (<i>GOES-16</i>).</p>","PeriodicalId":56319,"journal":{"name":"Cosmic Research","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140613144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

CME Radio Precursors Recorded in February–March 2023 2023 年 2-3 月记录到的集合放射粒子无线电前兆

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-04-15 DOI: 10.1134/s0010952523600348

O. A. Sheiner, V. M. Fridman

引用次数: 0

Earth’s Ionospheric Response to Solar Activity Phenomena in February–March 2023 地球电离层对 2023 年 2 月至 3 月太阳活动现象的响应

IF 0.6 4区物理与天体物理

Cosmic Research Pub Date : 2024-04-15 DOI: 10.1134/s0010952523600294

F. I. Vybornov, O. A. Sheiner

引用次数: 0