Journal of Aerospace Technology and Management最新文献_第2页

Simulation based Predictive analysis of Indian Airport transportation system using Computational intelligence techniques 基于仿真的印度机场运输系统的计算智能预测分析

Journal of Aerospace Technology and Management Pub Date : 2023-06-26 DOI: 10.1590/jatm.v15.1300

P. Rajarajeswari, P. Lalitha, Surya Kumari, A. S. Lakshmi, S. R. Mugunthan, Prathipati Ratna Kumar, Pranayanath Reddy Ananthula

{"title":"Simulation based Predictive analysis of Indian Airport transportation system using Computational intelligence techniques","authors":"P. Rajarajeswari, P. Lalitha, Surya Kumari, A. S. Lakshmi, S. R. Mugunthan, Prathipati Ratna Kumar, Pranayanath Reddy Ananthula","doi":"10.1590/jatm.v15.1300","DOIUrl":"https://doi.org/10.1590/jatm.v15.1300","url":null,"abstract":"Normally, flight delays and cancellations have significant impact on airlines operations and passenger’s satisfaction. Flight delays reduce the performance of airline operations and make significant effect on airports on time performance. Previously statistical models have been used for flight delays analysis. This study was applied in Indian aviation industry and it has given statistical analysis of domestic airlines. In this research paper, we have applied Machine Learning models with the help of computational intelligence techniques for predicting airport transport management system. We have also applied computational intelligence techniques such as Particle Swarm Optimization (PSO) and Ant Colonization Optimization (ACO) to optimize the prediction model for delay period time and calculating the most optimal dependability. We have made comprehensive analysis of Data Efficiency Model for different airlines with various approaches as well as comparative analysis of accuracy for predicting airport model by using various machine learning models. In this study we have presented invaluable insights for the analysis of flight delay models.","PeriodicalId":14872,"journal":{"name":"Journal of Aerospace Technology and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67186204","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

Design & Implementation of an Electric Fixed-wing Hybrid VTOL UAV for Asset Monitoring 用于资产监控的电动固定翼混合垂直起降无人机的设计与实现

Journal of Aerospace Technology and Management Pub Date : 2023-05-26 DOI: 10.1590/jatm.v15.1297

S. Sonkar, Prashant Kumar, Yuvaraj Tanjore Puli, R. George, Deepu Philip, A. K. Ghosh

{"title":"Design & Implementation of an Electric Fixed-wing Hybrid VTOL UAV for Asset Monitoring","authors":"S. Sonkar, Prashant Kumar, Yuvaraj Tanjore Puli, R. George, Deepu Philip, A. K. Ghosh","doi":"10.1590/jatm.v15.1297","DOIUrl":"https://doi.org/10.1590/jatm.v15.1297","url":null,"abstract":"Fixed-wing unmanned aerial vehicles (UAVs) offer the best aerodynamic efficiency required for long-distance or high-endurance applications, albeit their runway requirement for take-off and landing in comparison with quadcopters, helicopters, and flapping-wing UAVs that can perform vertical take-off and landing (VTOL). Integrating a multirotor system with a fixed-wing UAV imparts VTOL capabilities without significantly compromising fixed-wing aerodynamic efficiency, endurance, payload capacity or range. Documented system design approaches to address various challenges of such fusion processes are sparse. This research proposes a holistic approach for designing, prototyping, and testing an electric-powered fixed-wing hybrid VTOL UAV. The proposed system design approach augments the standard aircraft design process with additional steps to integrate VTOL capabilities. Separate fixed-wing and multirotor designs were derived from the frozen mission requirements, which were then fused. The process used simulation for modeling and evaluating alternatives for the hybrid UAV created using standard aircraft design equations. We prototyped and instrumented the final design to validate operational capabilities through test flights. Multiple flight trials identified the ideal combination of Lithium-Polymer (Li-Po) batteries for VTOL (8000mAh) and fixed-wing (14000mAh) modes to meet the endurance and range requirements. The redundant power supplies also increased the survivability chances of the hybrid UAV during failures.","PeriodicalId":14872,"journal":{"name":"Journal of Aerospace Technology and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67186011","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: 1

National Competitive Advantage Perspective of Global Aviation Hubs: The Middle East Big Three 全球航空枢纽的国家竞争优势透视:中东三巨头

Journal of Aerospace Technology and Management Pub Date : 2023-05-12 DOI: 10.1590/jatm.v15.1298

Stephen Moreland, Mahmoud Alajaty, E. Njoya

引用次数: 0

Design, Prototyping and Stratospheric Launch of CubeSats for University Competition 大学竞赛立方体卫星的设计、原型制作及平流层发射

Journal of Aerospace Technology and Management Pub Date : 2023-04-17 DOI: 10.1590/jatm.v15.1295

Diego Anestor Coutinho, P. Paulino, Arielli Ajudarte da Conceição, Sthefany Farias Vilela, G. Aquino, Antonio Alves Ferreira Junior, Evandro César Vilas Boas

{"title":"Design, Prototyping and Stratospheric Launch of CubeSats for University Competition","authors":"Diego Anestor Coutinho, P. Paulino, Arielli Ajudarte da Conceição, Sthefany Farias Vilela, G. Aquino, Antonio Alves Ferreira Junior, Evandro César Vilas Boas","doi":"10.1590/jatm.v15.1295","DOIUrl":"https://doi.org/10.1590/jatm.v15.1295","url":null,"abstract":"ABSTRACT This work presents the design and prototyping of two 1U standard CubeSats for the First Brazilian MCTI Satellite Olympiad, launching one in a stratospheric helium-filled balloon. The nanosatellites were designed for two missions: Internet of Things connectivity in remote areas based on CubeSat (IoSat) and low-orbit harmful gamma radiation mapping (LOHGRM). The IoSat mission aimed to provide server connectivity for a remote sensor network. The LOHGRM CubeSat was designed for sensing and mapping gamma radiation power levels in the satellite’s orbit to construct a heat map to study the gamma radiation effect on the equipment. The prototype’s performance was evaluated based on physical, mechanical, magnetic, thermal, and transmission characterization, with satisfactory results under test conditions. The LOHGRM mission test was carried out on the ground as proof of concept without flying while a stratospheric balloon launched the IoSat prototype. Due to restrictions imposed by the competition, the IoSat nanosatellite only captured and registered altitude, pressure, and temperature data without testing the communication payload. Instead, this data was sent to the ground station through the competition communication system and stored in a memory card to assess its operation during the flying. The satellite’s maximum altitude was 22.6 km, operating under –23.5 °C.","PeriodicalId":14872,"journal":{"name":"Journal of Aerospace Technology and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67185938","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

Recent Advances in Solar Cells for Aerospace Applications: Materials and Technologies 航空航天应用太阳能电池的最新进展:材料与技术

Journal of Aerospace Technology and Management Pub Date : 2023-04-17 DOI: 10.1590/jatm.v15.1296

R. Pessoa, P. Paulino

引用次数: 0

Experimental Investigation of the CFHT-27 Cusped-Field Hall Thruster Performance CFHT-27尖场霍尔推力器性能实验研究

Journal of Aerospace Technology and Management Pub Date : 2023-03-24 DOI: 10.1590/jatm.v15.1294

Emin Saridede, Selcen Yediyildiz, M. Çelik

引用次数: 1

Study of Head-Pursuit Cooperative Guidance Law for Near-space Hypersonic Interceptor 近空间高超声速拦截弹头追协同制导律研究

Journal of Aerospace Technology and Management Pub Date : 2023-03-24 DOI: 10.1590/jatm.v15.1293

Chenqi Zhu, Xiang Liu

引用次数: 0

The Coming of Age of Space Satellite Industry: Transitioning from a Growth to a Maturity Life Cycle Phase 空间卫星产业时代的到来:从成长期到成熟期的过渡

Journal of Aerospace Technology and Management Pub Date : 2023-03-06 DOI: 10.1590/jatm.v15.1291

L. Perondi

{"title":"The Coming of Age of Space Satellite Industry: Transitioning from a Growth to a Maturity Life Cycle Phase","authors":"L. Perondi","doi":"10.1590/jatm.v15.1291","DOIUrl":"https://doi.org/10.1590/jatm.v15.1291","url":null,"abstract":"From the perspective of the evolution of modern mass-production industrial sectors, the establishment of an industry can occur in a typical sequence of four conceptual phases: the introduction phase, in which a new technological concept is introduced; the growth phase, in which application of this concept in the form of a product or service is undertaken; the maturity phase, in which the direct use of the product and the advent of product-enabled services establish the new economic sector, and an eventual decline phase when one or more substitute products appear. Most of the current industrial products may be considered systems. The application of established concepts, such as interchangeable parts, permits firms to manufacture systems on a large scale, making sophisticated products available to society at manageable prices. The large availability of a product in a socioeconomic environment favors the use of this product in innovative ways, many of them unprecedented. In this way, introducing an innovative product in the market may nucleate a whole new industry over time, which may experience growth either through the continual evolvement of the product or expansion of the breadth of applications. Recent years have shown impressive development in the space industry. This article presents data that suggests that the global satellite space industry is transitioning from a growth to a maturity stage. It will be argued that barriers to entry are still at a level that permits Brazil, given its current position, to engage in the global space industry.","PeriodicalId":14872,"journal":{"name":"Journal of Aerospace Technology and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67185847","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 Retrospective of Global Navigation Satellite System Ionospheric Irregularities Monitoring Networks in Brazil 巴西全球导航卫星系统电离层不规则监测网络回顾

Journal of Aerospace Technology and Management Pub Date : 2023-03-06 DOI: 10.1590/jatm.v15.1288

E. R. Paula, J. Monico, Ítalo Tsuchiya, C. Valladares, S. Costa, L. Marini-Pereira, B. Vani, A. Moraes

{"title":"A Retrospective of Global Navigation Satellite System Ionospheric Irregularities Monitoring Networks in Brazil","authors":"E. R. Paula, J. Monico, Ítalo Tsuchiya, C. Valladares, S. Costa, L. Marini-Pereira, B. Vani, A. Moraes","doi":"10.1590/jatm.v15.1288","DOIUrl":"https://doi.org/10.1590/jatm.v15.1288","url":null,"abstract":"The use of Global Navigation Satellite System (GNSS) for air and terrestrial navigation and for many applications is increasing in the last decades. However, the Earth’s ionosphere causes GNSS signal delay due to the total electron content (TEC) and scintillation in the signal phase and amplitude. This scintillation can give rise to deleterious effects in the GNSS positioning. So, it is important to assess the effects of the ionosphere over the GNSS signal. To achieve this goal, it is necessary to have a large spatial and temporal coverage of data from many different sounders, being the GNSS receivers of great importance due to their global coverage and availability. In this work, we present a retrospective of the scintillation monitoring networks in Brazil and their characteristics. As the RBMC network managed by the IBGE provides TEC and as rate of TEC index (ROTI) is well correlated with ionospheric irregularities, we present also the RBMC network description. These RBMC GNSS receivers provide data in regions with scarcity of scintillation monitors. The description of the Ionospheric Scintillation Monitoring Receivers (ISMR) Query Tool, that is a web software that has been supporting research on the ISMR data, is also presented.","PeriodicalId":14872,"journal":{"name":"Journal of Aerospace Technology and Management","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67185798","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: 6

Three-Dimensional Thermohydrodynamic Analysis of Journal Bearing Lubricated by Magnetic Fluids with Couple Stresses 耦合应力磁流体润滑滑动轴承的三维热流动力学分析

Journal of Aerospace Technology and Management Pub Date : 2023-03-06 DOI: 10.1590/jatm.v15.1290

Ruaa Braz Dahham, N. A. Hashim, F. M. K. Al-Fatlwe

引用次数: 0