Journal of Space Safety Engineering最新文献

{"title":"Editorial Board and Society Advert","authors":"","doi":"10.1016/S2468-8967(25)00045-X","DOIUrl":"10.1016/S2468-8967(25)00045-X","url":null,"abstract":"","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Page IFC"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169860","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}

{"title":"Space systems safety and mission assurance case study-based graduate education","authors":"Liz Bosch ,&nbsp;Radu Babiceanu","doi":"10.1016/j.jsse.2025.02.004","DOIUrl":"10.1016/j.jsse.2025.02.004","url":null,"abstract":"<div><div>There is a significant number of discussions lately, at both government agencies and private industry, about sending crewed missions further into space. Sending astronauts back to the Moon and, for the first time, to Mars seems to make space enthusiasts around the world excited given the noteworthy tests and preparations going on in the last few years. The decision to launch crewed missions into space depends primarily on three aspects: technology, budget, and mission risk. Even when the first two aspects are addressed, the third question still remains: is it safe enough? Generally, Safety and Mission Assurance (S&amp;MA) for space systems is taught in space systems programs from an operations standpoint. There are very few to no courses across the USA that address space S&amp;MA from the design engineering perspective. There is also limited teaching of ethics-based safety culture in the engineering programs offered across the country. The resultant gap between graduates’ knowledge of space S&amp;MA and the needed skills to conduct design engineering of space systems is, at the moment, mostly filled by the space agencies and private space industry. The graduate course framework presented in this paper is built on a student-centered approach through customized case-study experiences that promotes understanding and motivation, which are significant aspects of making risk-based decisions with considerations to safeguarding human lives. By exploring the root causes of human space flight close calls, incidents, and mishaps, students can envision themselves in the space operational environment and can become aware of how design engineering, safety culture, and ethics act through a combined feedforward and feedback mechanism to ensure reliable and safe operations. Then, connecting back to the theoretical course material creates the student's understanding and motivation once they act as decision-makers after graduation. The proposed case study-based course framework also promotes critical thinking and problem-solving for the safety engineering aspects of the design of space systems. Understanding and motivation, together with critical-thinking and problem-solving is expected to prove the efficacy of case-study-based instruction and support instilling student ethical decision making, with its component parts of integrity, accountability, and responsibility.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 12-16"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169864","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}

{"title":"A Reliability-Driven Design and Test (ReDDT) methodology for space nuclear power and propulsion systems","authors":"Dr. L. Dale Thomas ,&nbsp;Samantha Rawlins ,&nbsp;Shreyas Lakshmipuram Raghu ,&nbsp;Alexander Aueron","doi":"10.1016/j.jsse.2025.03.002","DOIUrl":"10.1016/j.jsse.2025.03.002","url":null,"abstract":"<div><div>The development methodology employed in the United States’ Rover NERVA program is reviewed as the basis for the Reliability-Driven Design and Test (ReDDT) methodology described herein. Postulated as perhaps the first full programmatic implementation of probabilistic design, the NERVA foundational methodology appears to have never been adopted elsewhere following program cancelation. Nevertheless, much of the framework developed during NERVA remains applicable, and the ReDDT approach described in this work is based upon their approach. The ReDDT approach builds on the NERVA method by introducing a qualitative failure mode analysis to identify which tests are most useful and maximize program efficiency. The qualitative analysis is supported by uncertainty analysis, which is applied to identify the drivers of the system's technical uncertainty and thereby drivers of safety and reliability. The ReDDT approach is distinct from existing reliability-based methodologies including Reliability Based Design Optimization (RBDO) and Design for Reliability (DfR) in that ReDDT focuses on concurrent and synergistic system design, integration, and test planning. ReDDT has been developed for NASA's current Space Nuclear Propulsion effort, but it has broader applicability to nuclear power systems and complex aerospace system developments and upgrades in general. The ReDDT methodology has the goal of transforming the relationship of the design effort to the integration and test effort within a system development from one of test-fail-fix to model-test-evaluate.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 53-65"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169868","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}

{"title":"Orbital season and its long-term effects on the thermal and electrical safe operation of low-Earth satellites in Sun-synchronous orbit","authors":"Jingyan Xie,&nbsp;Yun-Ze Li","doi":"10.1016/j.jsse.2025.02.006","DOIUrl":"10.1016/j.jsse.2025.02.006","url":null,"abstract":"<div><div>Similar to Earth, the orbital season also exists in a low-Earth orbit, and understanding these seasonal effects is crucial for ensuring the long-term performance and safety of spacecraft. However, methods for determining the orbital season and its long-term impact on the electricity supply systems are lacking. To address this research gap, we present a method for dividing the orbital season in the low-Earth Sun-synchronous orbit throughout the year. Accurate orbital data from four satellites from 2021 to 2023 were incorporated to ensure practical relevance and generalisability. The results indicate that the seasons in the Sun-synchronous orbit can be divided into a cold season, lasting from April to October, and a hot season, lasting from November to March. The thermal environment of satellites and the performance of the electricity supply system during different orbital seasons were studied. Our findings suggest that additional thermal management measures should be implemented during the hot season, which can mitigate system failure risks and enhance operational efficiency. This research not only complements previous studies on orbital seasons but also provides valuable guidance for future spacecraft design and management, emphasizing the importance of integrating thermal considerations into mission planning to ensure safe and effective space operations.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 175-186"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169691","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}

{"title":"Front page with the caption related to the front cover","authors":"","doi":"10.1016/S2468-8967(25)00052-7","DOIUrl":"10.1016/S2468-8967(25)00052-7","url":null,"abstract":"","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Page i"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169862","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}

{"title":"Global governance & aerospace – The need for a management-integrated air and space education paradigm","authors":"Raafat George Saadé,&nbsp;Liu Hao,&nbsp;Taro Kuusiholma","doi":"10.1016/j.jsse.2025.04.003","DOIUrl":"10.1016/j.jsse.2025.04.003","url":null,"abstract":"<div><div>In the coming 20 years, advancements in aerospace technology will transform the aviation industry, spurred by environmental concerns and worldwide developments. The emergence of Higher Airspace Operations (HAO) will create new possibilities in fields such as telecommunications, Earth observation, and hypersonic transportation, employing trans-atmospheric vehicles and High-Altitude Platform Stations. Simultaneously, the low-altitude sector is experiencing growth through advanced air mobility (AAM), including unmanned aerial vehicles (UAV) and air taxis. China is spearheading this \"low-altitude economy\" initiative, with projections suggesting that urban air mobility could surpass a trillion-dollar valuation by 2040. The expansion in both high- and low-altitude domains signals significant technological progress and economic benefits on a global scale. All these advancements present significant challenges to operations, management, and governance of air and space, most importantly as they relate to safety. In response, the Beijing Institute of Technology's School of Global Governance (SGG) was established to address China's evolving global role, its increasing involvement in the United Nations, and the lack of integrated management and governance content in aerospace-related graduate programs. The school has developed four primary focus areas: air and space, the digital economy and AI, the environment and sustainability, and governance. The SGG aims to maintain a significant proportion of international faculty members. The school emphasizes an internationalized curriculum to equip students with the multifaceted and interdisciplinary nature of air and space studies. By offering a global governance degree in business management, public administration, or legal focus, students have the flexibility to tailor their thesis or dissertation to their career goals. The SGG forged numerous international partnerships through Memorandums of Understanding (MoUs), providing students with internship opportunities. The school's educational approach is grounded in Self-Directed Learning principles, fostering skills for lifelong learning in its students.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 17-27"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169865","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}

{"title":"Reaching Mars: Medical risks and potential surgical conditions in the Martian environment and during long-duration spaceflight","authors":"Dora Babocs ,&nbsp;Angela Preda ,&nbsp;Rowena Christiansen","doi":"10.1016/j.jsse.2024.09.002","DOIUrl":"10.1016/j.jsse.2024.09.002","url":null,"abstract":"<div><div>Compared to lunar missions, Mars missions will pose additional challenges. This includes a longer duration (currently anticipated to take around three years for a return mission), and a hazardous Martian environment with 0.38 Earth gravity, a thin atmosphere, and a weak magnetosphere. These factors contribute to extreme weather conditions, and significant exposure to space radiation. Evacuation to Earth for medical treatment will be impractical, rendering the capability to provide surgical interventions absolutely necessary. This paper is part of an ongoing scoping review of relevant published scientific literature to identify medical conditions that might require operative or non-operative surgical solutions during long-duration spaceflight. In the context of potential future Mars missions, onboard acute conditions, or newly developed chronic diseases (Type 1), and Mars surface/environment-related surgical conditions (Type 2), provide relevant considerations for future mission planning and crew safety. (Type 1) During long-duration spaceflight, exposure to space radiation and microgravity affects every organ system. This may result in a broad range of medical events requiring diverse operative or non-operative surgical interventions. The likelihood of acute life-threatening events (Type 1a.) is increased, and newly developed chronic diseases (Type 1b.) may also occur. If asymptomatic, but untreated, secondary sudden surgical emergencies may result. On reaching Mars (Type 2), reintroduction of partial gravity (0.38 G), flight-related reduced bone mineral density and potential changes in muscle mass, might lead to increased risk of lumbar disc herniations and traumatic injuries such as fractures. Without adequate space radiation shielding, surface conditions will likely increase the risk for development of malignancies and eye diseases such as cataracts. Communication delays (as long as 24 min each way) will require any immediate medical emergency to be managed in-situ by the expeditioners. Remotely operated robotic surgery is not currently feasible, as any communication lag &gt;100 ms will cause a perceptible delay, potentially affecting surgical outcomes. The provision of healthcare for Mars missions will face unique challenges in terms of both a hostile and extreme environment, and a remote and isolated location without real-time Earth communication. The medical team will need to be equipped to manage a very wide range of health conditions, including low acuity, chronic, and high acuity life-threatening issues, with some potentially requiring surgical intervention. Issues for the treating team include appropriate skill sets and access to medical guidance, facilities, equipment and supplies, and available pharmaceuticals. These significant challenges underlie the importance of adequate anticipation, preparation and planning for the healthcare needs of Mars explorers.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 239-245"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169574","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}

{"title":"Iterating on a design – further developments in the evolution of the ballistic limit equations for the Mars Sample Return Project","authors":"William P. Schonberg ,&nbsp;Michael Squire","doi":"10.1016/j.jsse.2024.12.004","DOIUrl":"10.1016/j.jsse.2024.12.004","url":null,"abstract":"<div><div>The goal of the Mars Sample Return–Capture, Containment, and Return System Project is to retrieve samples launched from the Martian surface and return them to Earth for detailed analysis. An important part of this project is the design of the system's micrometeoroid protection system, which protects the Earth Entry System and the collected samples during their journey back to Earth. As mission parameters and the micrometeoroid and orbital debris threat became better understood, the design of the micrometeoroid protection system evolved. A key element used in the shield development process is the ballistic limit equation, which is an equation that is used to determine whether or not a particular structural element or system will end up in a failed state as a result of a specified impact. As the design of the Earth Entry System and the micrometeoroid protection system evolved, a new set of ballistic limit equations was needed to better predict and assess the performance of developing shield system designs in anticipation of possible damage from micrometeoroid and orbital debris particle impacts. This paper provides a summary of how a set of initial BLEs were either extended or modified so that the resulting equations were better suited to new types of target configurations being considered, as well as how additional ballistic limit equations were developed where none previously existed.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 119-131"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169687","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}

{"title":"Attitude estimation from photometric data using Gaussian process regression","authors":"Ryui Hara,&nbsp;Yasuhiro Yoshimura,&nbsp;Toshiya Hanada","doi":"10.1016/j.jsse.2025.02.008","DOIUrl":"10.1016/j.jsse.2025.02.008","url":null,"abstract":"<div><div>The rapid growth of resident space objects in Earth’s orbit has intensified the need for advanced space situational awareness and space domain awareness to manage satellite traffic and prevent collisions. Attitude estimation is critical for accurate state propagation, as non-gravitational forces like solar radiation pressure and atmospheric drag depend on the object’s attitude. This study explores using light curves, time variation of an object’s brightness, to estimate a space object’s attitude. Light curve inversion, traditionally used in astronomy, faces challenges when applied to resident space objects due to their non-convex shapes and specular reflections. Conventional methods for attitude estimation often assume known shape and surface parameters, which are usually unknown for space debris generated by a collision or breakup. To address this issue, this study proposes the estimation method combining Gaussian process regression with the unscented Kalman filter. This study uses Gaussian process regression for a non-parametric observation model, enhancing robustness against unknown surface parameters. Numerical examples consider a box-wing object in a geosynchronous orbit and demonstrate that the proposed method has better estimation accuracy than a conventional unscented Kalman filter. The numerical simulation results also represent the attitude estimation robust against uncertainties in surface properties, contributing to practical scenarios in space situational awareness and space domain awareness where the object parameters are unknown.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 227-238"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169696","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}

{"title":"Developing the IAASS Space Safety Academy","authors":"Tommaso Sgobba","doi":"10.1016/j.jsse.2024.12.001","DOIUrl":"10.1016/j.jsse.2024.12.001","url":null,"abstract":"<div><div>The International Association for the Advancement of Space Safety (IAASS) has identified safety education as a key enhancer of system safety. Space safety design criteria, methods and hazard analyses techniques are not generally taught in depth as part of typical university education; however, both manned and unmanned space programs require familiarity with modern risk-based design techniques and with hazard control approaches. The IAASS Space Safety Academy (ISSA) is being established as the center of excellence in space safety education and professional training. The ISSA mission is to make available basic multidisciplinary knowledge in the field of space safety to aerospace engineering postgraduate and undergraduate students. The key ISSA program is a 10-week in-class certificate program in space safety (1/2 Master) organized in cooperation with major academic institutions in Europe, Americas, and Asia. The ISSA will also provide remote undergraduate level courses in space safety as well as in-class and remote on site and web-based professional training courses in space safety. The article provides an overview of the certificate program and of its multidisciplinary structure.</div></div>","PeriodicalId":37283,"journal":{"name":"Journal of Space Safety Engineering","volume":"12 1","pages":"Pages 41-46"},"PeriodicalIF":1.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169867","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}