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Impulsive Load Destructive Effects Reduction in Launch Vehicles Using Structural Joint 利用结构连接降低运载火箭的冲击载荷破坏效应
Journal of Space Science and Technology Pub Date : 2023-08-23 DOI: 10.30699/jsst.2023.1436
Hamed Kashani
{"title":"Impulsive Load Destructive Effects Reduction in Launch Vehicles Using Structural Joint","authors":"Hamed Kashani","doi":"10.30699/jsst.2023.1436","DOIUrl":"https://doi.org/10.30699/jsst.2023.1436","url":null,"abstract":"Aerospace systems and subsystems are subjected to impulsive loads due to several reasons like engine start and burnout, separation and so on. These loads may make temporary or permanent failures in some sensitive components or subsystems. To avoid these failures some constraints should be consider in design mechanical process. Another approach can be reducing the load level in transmission path without any change in the source of load and without adding any new component and only with design optimization of available components i.e. , structural joints destructive effects of impulsive loads. This paper uses analytical results of joints behavior to present practical solution for minimizing load transmission through the joint.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139349453","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 of space weather and its risks on human biologic processes 研究空间气象及其对人类生物过程的风险
Journal of Space Science and Technology Pub Date : 2023-08-23 DOI: 10.30699/jsst.2023.1431
Aida Kazemi Hokmabad, Seyede Elahe Khatoon abadi Kalali, Amir Reza Kosari, Ehsan Kosari, Vahid Bohlouri
{"title":"Study of space weather and its risks on human biologic processes","authors":"Aida Kazemi Hokmabad, Seyede Elahe Khatoon abadi Kalali, Amir Reza Kosari, Ehsan Kosari, Vahid Bohlouri","doi":"10.30699/jsst.2023.1431","DOIUrl":"https://doi.org/10.30699/jsst.2023.1431","url":null,"abstract":"This paper investigates solar activities and its phenomena from the perspective of risks to the earth's environment, human health, and space weather risks to space systems. In this article, in addition to a brief explanation about the physics of the sun and space weather phenomena, the effects of these phenomena on human health have been investigated. Moreover, the results of international researches have been studied and analyzed to determine the relationship between heart diseases, brain diseases, cancer, birth rates, health of astronauts, and animal life with space weather phenomena. The results of this article help to predict these events during the occurrence of solar events and by taking the correct actions in addition to preserving biological health, possible damages can also be minimized.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139349394","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
Growth Mechanism of Matricaria chamomilla Plant Under Space Lighting System: Induction of Pigment Synthesis, Enzyme Defense System, and Antioxidant Metabolites 空间照明系统下洋甘菊的生长机制：色素合成、酶防御系统和抗氧化代谢物的诱导
Journal of Space Science and Technology Pub Date : 2023-08-23 DOI: 10.30699/jsst.2023.1412
H. Hassanpour
{"title":"Growth Mechanism of Matricaria chamomilla Plant Under Space Lighting System: Induction of Pigment Synthesis, Enzyme Defense System, and Antioxidant Metabolites","authors":"H. Hassanpour","doi":"10.30699/jsst.2023.1412","DOIUrl":"https://doi.org/10.30699/jsst.2023.1412","url":null,"abstract":"Light is a vital factor for plant cultivation in space. In this research, the impact of light spectrums was studied on the growth mechanisms through chlorophyll pigments, enzyme defense system, and antioxidant metabolite analyses. Seeds were cultivated in Murashige and Skoog (MS) medium and exposed to different light spectrums of white, red, blue, and red-blue. Results showed that red-blue lights induced the fresh and dry weight, root length, adventitious roots, relative water content, chlorophyll content, protein, flavonoids, and antioxidant enzymes of superoxide dismutase and catalase. Moreover, the highest amount of hydrogen peroxide was observed in seedlings treated with red light. It seems that red-blue light is a suitable lighting spectrum for M. chamomilla cultivation in the closed life support system.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139349460","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
Form-Finding and Free Vibration Analysis of a Class-One Triplex Tensegrity Prism 一类三重张弦棱柱的寻形和自由振动分析
Journal of Space Science and Technology Pub Date : 2023-08-23 DOI: 10.30699/jsst.2021.289596.1349
Milad َAzimi, Samad Moradi
{"title":"Form-Finding and Free Vibration Analysis of a Class-One Triplex Tensegrity Prism","authors":"Milad َAzimi, Samad Moradi","doi":"10.30699/jsst.2021.289596.1349","DOIUrl":"https://doi.org/10.30699/jsst.2021.289596.1349","url":null,"abstract":"This paper deals with form-finding and free vibration analysis of a pre-stressed class-one triplex tensegrity structure. The form-finding is performed via a two-step procedure, the nodal coordinates connectivity matrix, and structural element force density determination. Accordingly, the possible states for the nodal coordinates and the structural force density of the triplex prism have been determined by trial and error (based on topology and member type knowledge) to satisfy the force density, and equilibrium matrices rank requirements. Based on different structural topologies, the equation of the motion in the frequency domain for free vibration analysis of the system is derived using the spectral element approach and dynamic shape functions. Simulations are provided for different system heights and the top-bottom aria ratios and compared with the finite element method. The numerical simulations in the form of a comparative study of the natural frequencies of triplex tensegrity prism with different heights and cross-sections represent the system’s robustness with different topologies for single or","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"43 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139349373","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
Optimized Dimension Design of Catalytic Chamber of a 10 N Thruster 10n推进器催化室尺寸优化设计
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1332
Sajjad Davari, H. Karimaei, Mohammad Reza Salimi, H. Naseh
{"title":"Optimized Dimension Design of Catalytic Chamber of a 10 N Thruster","authors":"Sajjad Davari, H. Karimaei, Mohammad Reza Salimi, H. Naseh","doi":"10.30699/jsst.2023.1332","DOIUrl":"https://doi.org/10.30699/jsst.2023.1332","url":null,"abstract":",","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134089818","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
Thermal Modeling of Lidar Payload in a Remote Sensing Satellite under System Level Considerations with a Review on its Challenges 基于系统级考虑的遥感卫星激光雷达有效载荷热建模及其挑战综述
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1429
M. Khoshsima, Mehran Shahriary, Sajjad Ghazanfarinia, S. Emami, Y. Saffar
{"title":"Thermal Modeling of Lidar Payload in a Remote Sensing Satellite under System Level Considerations with a Review on its Challenges","authors":"M. Khoshsima, Mehran Shahriary, Sajjad Ghazanfarinia, S. Emami, Y. Saffar","doi":"10.30699/jsst.2023.1429","DOIUrl":"https://doi.org/10.30699/jsst.2023.1429","url":null,"abstract":"The results show that the lidar in cold orbital conditions has a temperature increase of about 38 degrees Celsius due to thermal design. Also, the range of temperature fluctuations before applying thermal design in the cold state of temperature changes in a circuit is about 14 degrees and after designing these fluctuations have been reduced to about 5 degrees. In hot conditions, the temperature conditions have improved a lot after the design and the maximum operating temperature is about 27 degrees the average temperature has decreased by about 22 degrees, while the temperature fluctuations have also decreased by 21 degrees. A significant temperature increase has occurred in the receiver after applying the thermal design in cold conditions, which is still within the allowed range. This is despite the fact that in hot conditions, after applying the thermal design, there was no significant change in the temperature of the receiver. In the case of the reflector, the conditions are completely different, so the minimum temperature in cold conditions has increased by 42 degrees and the maximum temperature has decreased by 7 degrees in hot conditions. In addition, temperature changes have become more uniform in both cases.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129780094","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
Determination of the sensitive volume and critical charge for induction of SEU in nanometer SRAMs 纳米sram中诱导SEU的敏感体积和临界电荷的测定
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1423
Gholamreza Raisali, Masume Soleimaninia, Amir Moslehi
{"title":"Determination of the sensitive volume and critical charge for induction of SEU in nanometer SRAMs","authors":"Gholamreza Raisali, Masume Soleimaninia, Amir Moslehi","doi":"10.30699/jsst.2023.1423","DOIUrl":"https://doi.org/10.30699/jsst.2023.1423","url":null,"abstract":"در این پژوهش، حجم حساس و بار بحرانی یک حافظه SRAM با تکنولوژی 65 نانومتری CMOS، به عنوان دو کمیت مهم در محاسبات ترابرد پرتو در رخداد به‌هم‌ریختگی‌ تک‌حادثه‌ای (SEU) که رایج‌ترین رخداد در تحقیقات فضایی محسوب می‌شود، تعیین شد. بدین منظور، ابتدا یک سلول حافظه متشکل از ترانزیستورهای NMOS و PMOS با استفاده از نرم‌افزار Silvaco TCAD شبیه‌سازی شد. برای تعیین دو کمیت مذکور، پرتو با مقادیر مختلف از انتقال خطی انرژی (LET) به نواحی گوناگون ترانزیستورها تابانده شد و ولتاژ خروجی مورد بررسی قرار گرفت. بار بحرانی به عنوان کمترین بار لازم برای تغییر وضعیت منطقی سلول، با انتگرال‌گیری از جریان درین در لحظه تغییر وضعیت ولتاژ خروجی حاصل شد. برای تعیین حجم حساس نیز کمینه LET که در هر نقطه منجر به تغییر در وضعیت منطقی خروجی‌ها می‌شود، معیاری از حساسیت در نظر گرفته شد. نتایج ضمن تطابق با مراجع، مقادیر حجم حساس و بار بحرانی را به ترتیب µm3 054/0 و fC 48/1 نشان دادند.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135429038","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
Implementation and Comparison of Attitude Estimation Algorithms Using Low-Cost Sensors 基于低成本传感器的姿态估计算法的实现与比较
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1392
M. Navabi, M. Salehi
{"title":"Implementation and Comparison of Attitude Estimation Algorithms Using Low-Cost Sensors","authors":"M. Navabi, M. Salehi","doi":"10.30699/jsst.2023.1392","DOIUrl":"https://doi.org/10.30699/jsst.2023.1392","url":null,"abstract":"In a flying system, attitude control is one of the essential subsystems. In this subsystem, estimating the current state is very important to control the state, which is achieved by considering the attitude sensors. Comprehensive research is being done today to reduce the cost of Attitude sensors in applications such as drones, satellite simulation platforms, etc. For this purpose, sensors based on Micro-electromechanical Systems have received much attention due to their small size and low energy consumption. This model of sensors, despite its many advantages, has various noises and disturbances that require the application of fusion and estimation algorithms to obtain an acceptable output. In this research, to determine the attitude of the test platform, data fusion algorithms including complementary filter, Kalman filter, and Extended Kalman filter are implemented on a low-cost sensor. The mentioned estimation methods were implemented on the test platform and by determining the effective parameters in the estimation algorithms, the desired accuracy was obtained. The module obtained in these experiments is comparable to more expensive sensors.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114095592","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
Studying the effects of multi-layer shielding in reducing space radiations exposure of human and electrical components in space missions 研究多层屏蔽在减少空间任务中人体和电气部件的空间辐射暴露中的作用
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1422
S. Shoorian, S. Amir, Hossein Feghhi, H. Jafari, Reza Amjadifard
{"title":"Studying the effects of multi-layer shielding in reducing space radiations exposure of human and electrical components in space missions","authors":"S. Shoorian, S. Amir, Hossein Feghhi, H. Jafari, Reza Amjadifard","doi":"10.30699/jsst.2023.1422","DOIUrl":"https://doi.org/10.30699/jsst.2023.1422","url":null,"abstract":"Protection of astronauts and electronic components in satellites and spacecraft against space rays is one of the most important primary requirements in space missions. In this work, the effect of three materials, aluminum, as the most common material, polyethylene, and a graded-z structure, in the protection of space radiations has been evaluated. The calculations of the dose caused by these radiations on the human body and a silicon piece have been carried out by MCNPX Monte Carlo code. The dose caused by cosmic rays has been calculated after applying shields of aluminum, graded-z structure","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123454544","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
A review of the applications of artificial intelligence in improving the performance of integrated space- air and ground networks 综述了人工智能在提高空间-空气和地面综合网络性能方面的应用
Journal of Space Science and Technology Pub Date : 2023-05-22 DOI: 10.30699/jsst.2023.1405
P. Hajipour, Roghieh Karimzadeh Baee, H. Zarrabi, Roghayeh Doost, L. Mohammadi
{"title":"A review of the applications of artificial intelligence in improving the performance of integrated space- air and ground networks","authors":"P. Hajipour, Roghieh Karimzadeh Baee, H. Zarrabi, Roghayeh Doost, L. Mohammadi","doi":"10.30699/jsst.2023.1405","DOIUrl":"https://doi.org/10.30699/jsst.2023.1405","url":null,"abstract":"According to the technical specifications of the future generations of telecommunication (the fifth generation and later), which should provide new services with very high data rates in the minimum time and wide coverage, as well as the exponential increase in traffic, the use of combined space-air networks Land is essential. It should be noted that the management of this type of combined network has major challenges in providing such services. Meanwhile, the intelligent management of resources in satellite-based hybrid networks will lead to increased capacity and improved service quality. For this purpose, in this article, a comprehensive review of the use of artificial intelligence in the field of satellite communications will be discussed. In the field of intelligent increase of capacity, various factors such as how to configure the network, and how to allocate resources such as spectrum, energy, and power will be investigated with consideration of intelligent interference management. Finally, in the field of service quality improvement, factors such as how to model and intelligently predict traffic, as well as how to deal with harmful environmental conditions, will be presented.","PeriodicalId":272394,"journal":{"name":"Journal of Space Science and Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131664468","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
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