首页 > 最新文献

Journal of Space Safety Engineering最新文献

英文 中文
Spaceflight associated dry eye syndrome (SADES): Outflow biophysics and infection risk 航天干眼综合征(SADES):外流生物物理和感染风险
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-06-01 DOI: 10.1016/j.jsse.2025.04.004
Ryung Lee , Joshua Ong , Ethan Waisberg , Stacey L. Fanning , Andrew G. Lee
There is a notably higher prevalence of dry eye syndrome and dry eye-related symptoms among astronauts during and after spaceflight aboard the International Space Station and space shuttle missions. This unique phenomenon is termed Spaceflight-associated dry eye syndrome (SADES). With plans for returning to the moon and manned missions to Mars, all potential threats to astronauts well-being and health, such as SADES, should be accounted for. Herein, we describe SADES, provide a rationale for its occurrence, and connect it to the increased risk of microbial keratitis.
在国际空间站和航天飞机执行航天飞行任务期间和之后,宇航员中干眼综合征和干眼相关症状的患病率明显较高。这种独特的现象被称为太空飞行相关干眼综合征(SADES)。在重返月球和载人火星任务的计划中,应该考虑到对宇航员福祉和健康的所有潜在威胁,例如SADES。在此,我们描述了SADES,提供了其发生的基本原理,并将其与微生物角膜炎的风险增加联系起来。
{"title":"Spaceflight associated dry eye syndrome (SADES): Outflow biophysics and infection risk","authors":"Ryung Lee ,&nbsp;Joshua Ong ,&nbsp;Ethan Waisberg ,&nbsp;Stacey L. Fanning ,&nbsp;Andrew G. Lee","doi":"10.1016/j.jsse.2025.04.004","DOIUrl":"10.1016/j.jsse.2025.04.004","url":null,"abstract":"<div><div>There is a notably higher prevalence of dry eye syndrome and dry eye-related symptoms among astronauts during and after spaceflight aboard the International Space Station and space shuttle missions. This unique phenomenon is termed Spaceflight-associated dry eye syndrome (SADES). With plans for returning to the moon and manned missions to Mars, all potential threats to astronauts well-being and health, such as SADES, should be accounted for. Herein, we describe SADES, provide a rationale for its occurrence, and connect it to the increased risk of microbial keratitis.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 2","pages":"Pages 377-380"},"PeriodicalIF":1.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365746","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
Front cover with vol. no. and issue 封面,卷号。和问题
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-06-01 DOI: 10.1016/S2468-8967(25)00065-5
{"title":"Front cover with vol. no. and issue","authors":"","doi":"10.1016/S2468-8967(25)00065-5","DOIUrl":"10.1016/S2468-8967(25)00065-5","url":null,"abstract":"","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 2","pages":"Page CO1"},"PeriodicalIF":1.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365747","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
Aircraft safety and space vehicle hazards: How safe from space debris hazards will your future flights be? 飞行器安全和空间飞行器的危害:未来的飞行对空间碎片的危害有多安全?
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-06-01 DOI: 10.1016/j.jsse.2025.03.006
Paul D. Wilde
The nexus between aviation safety and space operations has emerged as a controversial topic in the public's eye and a serious matter for space safety professionals. Media reports have drawn the public's attention to events including the closing of European airspace because of the re-entry of a Chinese upper-stage that later impacted the Indian Ocean. A recent FAA report to Congress indicated that "the probability of an aircraft downing accident in 2035 would be 0.0007 per year," based on an analysis by the Aerospace Corporation that accounted for the projected growth in global aircraft traffic and the number of on-orbit objects. SpaceX publicly objected because their analysis indicates that Starlink satellites completely burn up on re-entry. However, evidence from recent events proves that the analyzes used to predict the demise of Starlink, the Dragon trunk, and an ISS battery pallet are prone to underestimate the debris that survives re-entry as explained in Section 2.2. A FAA study of the Columbia accident used data on the actual commercial aircraft trajectories and found that the highest conditional probability of impact to any individual aircraft (given the break-up event occurred when and where it occurred) was between 1 in 1000 and 1 in 100, depending on how many fragments survived to aircraft altitudes but were unrecovered. This paper avoids the controversies by explaining what is currently done to protect aircraft from potential impacts by space debris during launch and re-entry. This paper will describe, in the simplest terms possible, the pillars of aircraft protection measures employed by the FAA during launch and re-entry, and answer several key questions:
How does the FAA establish how safe is safe enough for aircraft that are potentially threatened by a collision with space vehicle debris?
How does the FAA establish the regions of airspace that are closed or notified to ensure safety during US launch, re-entry, and disposal operations?
What is done to alert aircraft to debris hazards from unplanned or uncontrolled space debris (including natural debris such as meteoroids)?
Are the current best practices enough to sustain today's high level of aircraft safety given the potential threats from the lifecycle of large LEO constellations, including all the launches needed to deploy them, or should we be working together to develop more advanced methods?
航空安全和空间操作之间的关系已经成为公众眼中一个有争议的话题,也是空间安全专业人员的一个严肃问题。媒体的报道引起了公众对一些事件的关注,其中包括欧洲领空的关闭,原因是中国的上层火箭重新进入大气层,后来坠入了印度洋。美国联邦航空局最近向国会提交的一份报告显示,根据航空航天公司(Aerospace Corporation)的一项分析,“2035年发生飞机坠毁事故的概率为每年0.0007起”,该分析考虑了全球飞机交通量和在轨物体数量的预计增长。SpaceX公司公开表示反对,因为他们的分析表明,“星链”卫星在重返大气层时完全烧毁。然而,最近事件的证据证明,用于预测星链、龙躯干和国际空间站电池托盘死亡的分析往往低估了2.2节中解释的重返大气层后幸存的碎片。美国联邦航空局对哥伦比亚号事故的研究使用了实际商用飞机轨迹的数据,发现任何一架飞机受到撞击的最高条件概率(考虑到解体事件发生的时间和地点)在1000分之一到100分之一之间,这取决于有多少碎片幸存到飞机高度,但未被回收。本文通过解释目前为保护飞机在发射和再入期间免受空间碎片的潜在影响所做的工作来避免争议。本文将以最简单的术语描述美国联邦航空局在发射和再入期间采用的飞机保护措施的支柱,并回答几个关键问题:美国联邦航空局如何确定对可能受到太空飞行器碎片碰撞威胁的飞机的安全程度?美国联邦航空局如何建立关闭或通知的空域区域,以确保美国发射、再入和处置操作期间的安全?采取了哪些措施来提醒飞机注意计划外或不受控制的空间碎片(包括流星体等自然碎片)的碎片危害?考虑到大型LEO星座生命周期的潜在威胁,包括部署它们所需的所有发射,目前的最佳实践是否足以维持当今高水平的飞机安全,或者我们是否应该共同努力开发更先进的方法?
{"title":"Aircraft safety and space vehicle hazards: How safe from space debris hazards will your future flights be?","authors":"Paul D. Wilde","doi":"10.1016/j.jsse.2025.03.006","DOIUrl":"10.1016/j.jsse.2025.03.006","url":null,"abstract":"<div><div>The nexus between aviation safety and space operations has emerged as a controversial topic in the public's eye and a serious matter for space safety professionals. Media reports have drawn the public's attention to events including the closing of European airspace because of the re-entry of a Chinese upper-stage that later impacted the Indian Ocean. A recent FAA report to Congress indicated that \"the probability of an aircraft downing accident in 2035 would be 0.0007 per year,\" based on an analysis by the Aerospace Corporation that accounted for the projected growth in global aircraft traffic and the number of on-orbit objects. SpaceX publicly objected because their analysis indicates that Starlink satellites completely burn up on re-entry. However, evidence from recent events proves that the analyzes used to predict the demise of Starlink, the Dragon trunk, and an ISS battery pallet are prone to underestimate the debris that survives re-entry as explained in Section 2.2. A FAA study of the <em>Columbia</em> accident used data on the actual commercial aircraft trajectories and found that the highest conditional probability of impact to any individual aircraft (given the break-up event occurred when and where it occurred) was between 1 in 1000 and 1 in 100, depending on how many fragments survived to aircraft altitudes but were unrecovered. This paper avoids the controversies by explaining what is currently done to protect aircraft from potential impacts by space debris during launch and re-entry. This paper will describe, in the simplest terms possible, the pillars of aircraft protection measures employed by the FAA during launch and re-entry, and answer several key questions:</div><div>How does the FAA establish how safe is safe enough for aircraft that are potentially threatened by a collision with space vehicle debris?</div><div>How does the FAA establish the regions of airspace that are closed or notified to ensure safety during US launch, re-entry, and disposal operations?</div><div>What is done to alert aircraft to debris hazards from unplanned or uncontrolled space debris (including natural debris such as meteoroids)?</div><div>Are the current best practices enough to sustain today's high level of aircraft safety given the potential threats from the lifecycle of large LEO constellations, including all the launches needed to deploy them, or should we be working together to develop more advanced methods?</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 2","pages":"Pages 299-311"},"PeriodicalIF":1.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365743","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
Study on requirements for international lunar search and rescue interoperability standards 国际月球搜救互操作性标准要求研究
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-06-01 DOI: 10.1016/j.jsse.2025.03.004
Ningkang Zhang, Haofang Quan, Xiaolong Li, Liming Ren
This paper examines the interoperability standard requirements for international lunar search and rescue (SAR), namely the standardized fields or projects that should be carried out to achieve the objectives of international lunar SAR. First, this paper introduces the background of international lunar SAR, and discusses the irreplaceable role of standards in international cooperation on lunar activities. Next, it briefly investigates the unexpected life-threatening scenarios that astronauts may encounter during lunar exploration activities. For major distress scenarios, the strategies for emergency SAR are tentatively analyzed. Based on this research, the paper partially summarizes the international standards related to space SAR. Adhering to the principle of “common use” and considering factors such as long-term sustainability, the interoperability standard requirements for joint implementation of lunar SAR by astronauts from different countries, such as common base standards and interface protocol standards, have been studied. Subsequently, the paper outlines specific standard requirements for international lunar SAR interoperability, including their names and core contents. Finally, it proposes key standards that should be prioritized for development. It also discusses the channels for formulating these standards, providing a reference for future work.
本文研究了国际月球搜救的互操作性标准要求,即为实现国际月球搜救目标而需要开展的标准化领域或项目。首先介绍了国际月球搜救的背景,讨论了标准在月球活动国际合作中的不可替代作用。接下来,它简要地调查了宇航员在月球探测活动中可能遇到的意外危及生命的情况。针对主要遇险情景,初步分析了应急SAR的策略。在此基础上,对空间SAR相关国际标准进行了部分总结,坚持“通用”原则,考虑长期可持续性等因素,研究了不同国家航天员联合实施月球SAR的互操作性标准要求,如通用基础标准、接口协议标准等。随后,概述了国际月球SAR互操作性的具体标准要求,包括标准名称和核心内容。最后,它提出了应该优先发展的关键标准。探讨了标准制定的渠道,为今后的工作提供参考。
{"title":"Study on requirements for international lunar search and rescue interoperability standards","authors":"Ningkang Zhang,&nbsp;Haofang Quan,&nbsp;Xiaolong Li,&nbsp;Liming Ren","doi":"10.1016/j.jsse.2025.03.004","DOIUrl":"10.1016/j.jsse.2025.03.004","url":null,"abstract":"<div><div>This paper examines the interoperability standard requirements for international lunar search and rescue (SAR), namely the standardized fields or projects that should be carried out to achieve the objectives of international lunar SAR. First, this paper introduces the background of international lunar SAR, and discusses the irreplaceable role of standards in international cooperation on lunar activities. Next, it briefly investigates the unexpected life-threatening scenarios that astronauts may encounter during lunar exploration activities. For major distress scenarios, the strategies for emergency SAR are tentatively analyzed. Based on this research, the paper partially summarizes the international standards related to space SAR. Adhering to the principle of “common use” and considering factors such as long-term sustainability, the interoperability standard requirements for joint implementation of lunar SAR by astronauts from different countries, such as common base standards and interface protocol standards, have been studied. Subsequently, the paper outlines specific standard requirements for international lunar SAR interoperability, including their names and core contents. Finally, it proposes key standards that should be prioritized for development. It also discusses the channels for formulating these standards, providing a reference for future work.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 2","pages":"Pages 247-252"},"PeriodicalIF":1.0,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144365644","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 acoustic effect on liquid residue ejection from the closed vessel with a drain valve 带排水阀的密闭容器中残液喷射的声学效应研究
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/j.jsse.2024.11.003
Valeriy Trushlyakov, Vladislav Urbansky
The concept, schematic solution, and methodology for liquid residue passivation using additional acoustic impact based on a gas jet emitter when introducing gas into a closed vessel (CV) containing liquid residue have been developed. A methodology for numerical modeling of the process of liquid droplet entrainment from the CV using the Ansys Fluent software package has been developed, based on gas supply into the tank. The method consists of two interrelated physical-mathematical models (PMM): 1) PMM of gas introduction into CV taking into account additional acoustic impact and creation of two-phase flow structure with subsequent entrainment of liquid droplets through the drain valve into the environment; 2) PMM of acoustic cavitation occurrence in the liquid volume taking into account the assessment of vapor occurrence inside the liquid with subsequent use of these results as initial conditions in PMM on formation of two-phase gas flow. The influence of additional acoustic impact during gas introduction into the CV on the ejection of liquid residue was evaluated. The results showed that accounting for acoustic cavitation increases the entrainment of liquid droplets by approximately 40 %.
提出了将气体引入含有液体残渣的密闭容器(CV)时,利用基于气体喷射发射器的附加声冲击进行液体残渣钝化的概念、示意图解决方案和方法。利用Ansys Fluent软件开发了一种基于储气罐供气的CV液滴夹带过程数值模拟方法。该方法由两个相互关联的物理数学模型(PMM)组成:1)考虑了附加声影响和两相流结构的产生以及随后通过排水阀将液滴带入环境的气体引入CV的PMM;2)考虑液体内部蒸汽发生情况的声空化PMM,并将这些结果作为两相气流形成的PMM的初始条件。研究了气体引入过程中附加声冲击对液渣喷射的影响。结果表明,考虑声空化后,液滴的夹带量增加了约40%。
{"title":"Investigation of acoustic effect on liquid residue ejection from the closed vessel with a drain valve","authors":"Valeriy Trushlyakov,&nbsp;Vladislav Urbansky","doi":"10.1016/j.jsse.2024.11.003","DOIUrl":"10.1016/j.jsse.2024.11.003","url":null,"abstract":"<div><div>The concept, schematic solution, and methodology for liquid residue passivation using additional acoustic impact based on a gas jet emitter when introducing gas into a closed vessel (CV) containing liquid residue have been developed. A methodology for numerical modeling of the process of liquid droplet entrainment from the CV using the Ansys Fluent software package has been developed, based on gas supply into the tank. The method consists of two interrelated physical-mathematical models (PMM): 1) PMM of gas introduction into CV taking into account additional acoustic impact and creation of two-phase flow structure with subsequent entrainment of liquid droplets through the drain valve into the environment; 2) PMM of acoustic cavitation occurrence in the liquid volume taking into account the assessment of vapor occurrence inside the liquid with subsequent use of these results as initial conditions in PMM on formation of two-phase gas flow. The influence of additional acoustic impact during gas introduction into the CV on the ejection of liquid residue was evaluated. The results showed that accounting for acoustic cavitation increases the entrainment of liquid droplets by approximately 40 %.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 66-75"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169682","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 2023 Storms based on different time scales (Dst, Kp & Sym/H) 基于不同时间尺度(Dst、Kp和Sym/H)的2023年风暴分析
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/j.jsse.2024.12.002
Pawan Kumar , Mahender Pal , A.P. Mishra , Sham Singh
We use numerous plasma parameters with geomagnetic indices with different time scales for the solar wind (SW) during the corresponding periods. Using Kp 3 h data, Dst index hourly data, the symmetric disturbance field (SYM-H) minute resolution data, and solar plasma measurements from multiple satellites, examine the chain of significant events that occurred in year 2023. The Empirical methods and statistical correlation technique examines the relationship between SW parameters and geomagnetic indices during major geomagnetic storms in 2023. Statical analysis of geomagnetic provisional activity Sym/H has better results than the disturbance storm time (Dst) index during various main phases of geomagnetic activity. The correlation (Cr) between SW characteristics with Dst, Kp, and SYM/H have different values, defining the link of disturbance in space weather. This research provides valuable insights for enhancing space weather forecasting of solar-terrestrial interactions.
我们利用不同时间尺度的地磁指数和大量等离子体参数对太阳风在相应时期的变化进行了研究。利用Kp 3 h数据、Dst指数每小时数据、对称扰动场(SYM-H)分钟分辨率数据和多颗卫星的太阳等离子体测量数据,研究了2023年发生的一系列重要事件。利用经验方法和统计相关技术研究了2023年特大地磁风暴期间西南偏电参数与地磁指数的关系。地磁临时活动Sym/H的静态分析结果优于地磁活动各主要阶段的扰动风暴时间(Dst)指数。SW特征与Dst、Kp、SYM/H的相关系数Cr值不同,定义了空间天气扰动的联系。该研究为加强日地相互作用的空间天气预报提供了有价值的见解。
{"title":"Analysis 2023 Storms based on different time scales (Dst, Kp & Sym/H)","authors":"Pawan Kumar ,&nbsp;Mahender Pal ,&nbsp;A.P. Mishra ,&nbsp;Sham Singh","doi":"10.1016/j.jsse.2024.12.002","DOIUrl":"10.1016/j.jsse.2024.12.002","url":null,"abstract":"<div><div>We use numerous plasma parameters with geomagnetic indices with different time scales for the solar wind (SW) during the corresponding periods. Using Kp 3 h data, Dst index hourly data, the symmetric disturbance field (SYM-H) minute resolution data, and solar plasma measurements from multiple satellites, examine the chain of significant events that occurred in year 2023. The Empirical methods and statistical correlation technique examines the relationship between SW parameters and geomagnetic indices during major geomagnetic storms in 2023. Statical analysis of geomagnetic provisional activity Sym/H has better results than the disturbance storm time (Dst) index during various main phases of geomagnetic activity. The correlation (Cr) between SW characteristics with Dst, Kp, and SYM/H have different values, defining the link of disturbance in space weather. This research provides valuable insights for enhancing space weather forecasting of solar-terrestrial interactions.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 94-104"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169685","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
Radiant flux reflectivity model of nanocomposite dielectric materials 纳米复合介质材料的辐射通量反射率模型
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/j.jsse.2024.12.003
Sayavur I. Bakhtiyarov , Mostafa Hassanalian , Ayten S. Bakhtiyarova , Stephen M. White
A radiant-flux reflectivity model is developed to estimate the reflectance of the radiant flux in nanocomposite dielectric materials. The model considers reflectance, transmittance and absorbance in all components of the composite material. The model is applied to pristine PTFE and to a PFTE-based nanocomposite. The results are compared to the experimental data available in the literature. The simulation results show that the variation of the reflectance simulated for pristine PTFE samples of different thicknesses increases with increasing wavelength and decreases with increasing sample thickness. A comparison of the simulation results with the experimental data obtained by different researchers showed a qualitative agreement between the simulations and the experimental data.
建立了辐射通量反射率模型,用于估算纳米复合介质材料的辐射通量反射率。该模型考虑了复合材料各组分的反射率、透射率和吸光度。该模型适用于原始PTFE和基于pfte的纳米复合材料。结果与文献中的实验数据进行了比较。仿真结果表明,不同厚度的原始PTFE样品的反射率随波长的增加而增大,随厚度的增加而减小。将仿真结果与不同研究人员的实验数据进行了比较,结果表明仿真结果与实验数据在定性上是一致的。
{"title":"Radiant flux reflectivity model of nanocomposite dielectric materials","authors":"Sayavur I. Bakhtiyarov ,&nbsp;Mostafa Hassanalian ,&nbsp;Ayten S. Bakhtiyarova ,&nbsp;Stephen M. White","doi":"10.1016/j.jsse.2024.12.003","DOIUrl":"10.1016/j.jsse.2024.12.003","url":null,"abstract":"<div><div>A radiant-flux reflectivity model is developed to estimate the reflectance of the radiant flux in nanocomposite dielectric materials. The model considers reflectance, transmittance and absorbance in all components of the composite material. The model is applied to pristine PTFE and to a PFTE-based nanocomposite. The results are compared to the experimental data available in the literature. The simulation results show that the variation of the reflectance simulated for pristine PTFE samples of different thicknesses increases with increasing wavelength and decreases with increasing sample thickness. A comparison of the simulation results with the experimental data obtained by different researchers showed a qualitative agreement between the simulations and the experimental data.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 105-118"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169686","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
Continuous in-situ and remote sun observation for space weather monitoring and mitigation of infrastructure threats through an optimized heliocentric satellite constellation 通过优化的日心卫星星座进行空间天气监测和减轻基础设施威胁的连续原位和远程太阳观测
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/j.jsse.2025.02.002
Leonidas Askianakis
Although vital for life on Earth, solar activity poses questions and increasing threats to humanity due to the Sun's unknown dynamics, intensified by our dependence on terrestrial and space-based infrastructure. This situation is compounded by significant gaps in our understanding of space weather phenomena, the Sun's magnetic field, and the need for rapid responses to unpredicted solar events. To address these issues, an optimized heliocentric satellite constellation is proposed that leverages satellites in an Elliptical Walker Constellation. This system offers – among others - equally distributed arguments of periapsis separations and cross-coupled true anomalies with respect to the Sun-centric coordinate frame. In this paper it is also demonstrated that this strategic multi-spacecraft configuration makes it possible to distinguish spatial and temporal changes in solar wind phenomena, reconstruct, in 3D, Coronal Mass Ejections (CMEs), predict which space or ground-based infrastructure and when it will be affected by CMEs, maintain continuous coverage of the critical Sun-Earth line throughout the mission's duration, and protect future missions by providing simultaneously in-situ and remote measurements from small and cost-effective satellites.
尽管太阳活动对地球上的生命至关重要,但由于太阳未知的动态,加之我们对地面和太空基础设施的依赖,太阳活动给人类带来了问题和越来越大的威胁。我们对空间天气现象、太阳磁场以及对不可预测的太阳事件做出快速反应的需求的理解存在重大差距,使这种情况更加复杂。为了解决这些问题,提出了一个优化的日心卫星星座,利用椭圆沃克星座中的卫星。该系统提供了——除其他外——相对于太阳中心坐标系的平均分布的周心点分离和交叉耦合的真异常。本文还证明,这种战略性的多航天器配置可以区分太阳风现象的时空变化,以3D方式重建日冕物质抛射(cme),预测哪些空间或地面基础设施以及何时会受到日冕物质抛射的影响,在整个任务期间保持对关键日地线的持续覆盖。并通过小型和具有成本效益的卫星同时提供原位和远程测量来保护未来的任务。
{"title":"Continuous in-situ and remote sun observation for space weather monitoring and mitigation of infrastructure threats through an optimized heliocentric satellite constellation","authors":"Leonidas Askianakis","doi":"10.1016/j.jsse.2025.02.002","DOIUrl":"10.1016/j.jsse.2025.02.002","url":null,"abstract":"<div><div>Although vital for life on Earth, solar activity poses questions and increasing threats to humanity due to the Sun's unknown dynamics, intensified by our dependence on terrestrial and space-based infrastructure. This situation is compounded by significant gaps in our understanding of space weather phenomena, the Sun's magnetic field, and the need for rapid responses to unpredicted solar events. To address these issues, an optimized heliocentric satellite constellation is proposed that leverages satellites in an Elliptical Walker Constellation. This system offers – among others - equally distributed arguments of periapsis separations and cross-coupled true anomalies with respect to the Sun-centric coordinate frame. In this paper it is also demonstrated that this strategic multi-spacecraft configuration makes it possible to distinguish spatial and temporal changes in solar wind phenomena, reconstruct, in 3D, Coronal Mass Ejections (CMEs), predict which space or ground-based infrastructure and when it will be affected by CMEs, maintain continuous coverage of the critical Sun-Earth line throughout the mission's duration, and protect future missions by providing simultaneously in-situ and remote measurements from small and cost-effective satellites.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 149-159"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169689","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
International Space Settlement Design Competition - An Experience 国际空间聚落设计比赛-体验
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/j.jsse.2025.02.001
J. Clayton Gafford
A high school Space Settlement Design Competition held continuously for over 40 years exposes a group of student competitors to simulated real world industry proposal activity. This competition provides an opportunity for high school students interested in space to learn about both space exploration and system engineering. ISSDC provides students an opportunity to learn these concepts as well as offering opportunities for individuals to focus on their own specific interests and to the level of involvement that they select. Student competitors form fictitious companies and establish a company organizational structure that include a president, vice presidents, department directors and department team members. The companies also have an industry professional join as a Chief Executive Officer (CEO) who guides the students through the competition proposal. The result of the competition is that student competitors, CEOs, and other volunteers gain a lifelong experience that guides and enriches them through their educational and professional careers.
一个连续举办了40多年的高中空间聚落设计大赛,让一群学生竞争者参与模拟现实世界的工业提案活动。这次竞赛为对太空感兴趣的高中生提供了一个学习太空探索和系统工程的机会。ISSDC为学生提供了学习这些概念的机会,也为个人提供了专注于自己的特定兴趣和他们选择的参与程度的机会。学生参赛者组成虚拟公司,建立公司组织结构,包括总裁、副总裁、部门主管和部门团队成员。这些公司还有一位行业专业人士作为首席执行官(CEO),指导学生完成竞赛提案。比赛的结果是,学生选手、首席执行官和其他志愿者获得了终身的经验,通过他们的教育和职业生涯来指导和丰富他们。
{"title":"International Space Settlement Design Competition - An Experience","authors":"J. Clayton Gafford","doi":"10.1016/j.jsse.2025.02.001","DOIUrl":"10.1016/j.jsse.2025.02.001","url":null,"abstract":"<div><div>A high school Space Settlement Design Competition held continuously for over 40 years exposes a group of student competitors to simulated real world industry proposal activity. This competition provides an opportunity for high school students interested in space to learn about both space exploration and system engineering. ISSDC provides students an opportunity to learn these concepts as well as offering opportunities for individuals to focus on their own specific interests and to the level of involvement that they select. Student competitors form fictitious companies and establish a company organizational structure that include a president, vice presidents, department directors and department team members. The companies also have an industry professional join as a Chief Executive Officer (CEO) who guides the students through the competition proposal. The result of the competition is that student competitors, CEOs, and other volunteers gain a lifelong experience that guides and enriches them through their educational and professional careers.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 28-36"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169866","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
AF advertisement
IF 1 Q3 ENGINEERING, AEROSPACE Pub Date : 2025-03-01 DOI: 10.1016/S2468-8967(25)00053-9
{"title":"AF advertisement","authors":"","doi":"10.1016/S2468-8967(25)00053-9","DOIUrl":"10.1016/S2468-8967(25)00053-9","url":null,"abstract":"","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Page ii"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169693","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
期刊
Journal of Space Safety Engineering
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1