{"title":"Some Considerations About Present and Future of General Aviation Aircraft","authors":"Sergio De Rosa","doi":"10.1007/s42496-025-00268-2","DOIUrl":"10.1007/s42496-025-00268-2","url":null,"abstract":"","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 3","pages":"169 - 170"},"PeriodicalIF":0.0,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143925434","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":"The Political Issues of Satellite Networks for Telecommunications","authors":"Sergio De Rosa","doi":"10.1007/s42496-025-00256-6","DOIUrl":"10.1007/s42496-025-00256-6","url":null,"abstract":"","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 2","pages":"79 - 79"},"PeriodicalIF":0.0,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143612095","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":"Comparison of Data-Driven Approach and MAT224 Material Model: A Numerical Study on the Ballistic Impact Behavior of 2024-T351 Aluminum Plates","authors":"Yejie Qiao, Xin Li, Han Zhao, Chao Zhang","doi":"10.1007/s42496-024-00243-3","DOIUrl":"10.1007/s42496-024-00243-3","url":null,"abstract":"<div><p>Numerical simulation is a feasible and effective way to investigate the ballistic impact behavior of material. In this research, the numerical simulations of ballistic impact behavior of 2024-T351 Aluminum plates with different thicknesses struck by blunt projectiles are conducted via two numerical approaches, including a data-driven approach using the commercial software ABAQUS/Explicit and MAT224 material model using the commercial software LS-DYNA, are employed to analyze the impact response of 2024-T351 Aluminum plates, respectively. Within the data-driven approach, an enhanced rate-dependent data-driven constitutive model is utilized to describe the mechanical response, where the classical Johnson–Cook fracture criterion is employed to characterize the fracture behavior of the materials during impact simulations. Finally, the relationship between residual velocity and impact velocity, ballistic limit velocities, strain, local displacement, and penetration process are comprehensively investigated to make a detailed comparison between these two numerical approaches. It is found that the data-driven approach provides better accuracy in predicting ballistic limit velocities. Additionally, the data-driven approach differs from the MAT224 material model in the numerical simulation of target plate penetration. This research is to provide instructions for the choice of a numerical approach to the impact simulation of 2024-T351 aluminum.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 5","pages":"443 - 456"},"PeriodicalIF":0.0,"publicationDate":"2025-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073771","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}
Alessandro Vananti, Harleen Kaur Mann, Thomas Schildknecht
{"title":"Shooting Scheme for Perturbations in Optimised Solution of the Orbital Boundary Value Problem","authors":"Alessandro Vananti, Harleen Kaur Mann, Thomas Schildknecht","doi":"10.1007/s42496-024-00246-0","DOIUrl":"10.1007/s42496-024-00246-0","url":null,"abstract":"<div><p>Monitoring of the near-Earth space environment has become more and more important in recent times. The constantly increasing amount of space debris is a major threat for space activities and an exhaustive knowledge about the space objects population is of primary importance for civil and military applications. The <i>surveillance</i> of the space surrounding the Earth is achieved by means of sensors based on different technologies. Passive optical observations using ground telescopes are usually employed to track space objects in high altitude orbits. The obtained measurements are sparse, and their arcs are very short. The computation of the orbit based on these observations is challenging and several methods have been proposed. One of the known approaches relies on an optimization scheme of the classical boundary value problem. However, in the latter, the object motion is described by a Keplerian orbit without considering additional perturbations. In this novel approach, orbital perturbations are introduced in the computation procedure using a shooting model. The improved algorithm is applied to simulated observations of objects in the geostationary region under the influence of solar radiation pressure. The measured arcs are separated by intervals of one or more orbit revolutions. The performance of the proposed method is evaluated in terms of accuracy considering different levels of perturbation.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 5","pages":"427 - 441"},"PeriodicalIF":0.0,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-024-00246-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mechanical Assessment of Sun Sensors for Launch Environment","authors":"Abdeljelil Mankour","doi":"10.1007/s42496-024-00242-4","DOIUrl":"10.1007/s42496-024-00242-4","url":null,"abstract":"<div><p>Sun sensors are widely utilized in satellite attitude determination, particularly within Attitude Determination and Control Systems (ADCS), where accurate characterization of the satellite’s orientation stability is crucial. This study aims to qualify sun sensors for new applications, focusing on their positioning and inclination to satisfy mission-specific requirements. The operational environment involves a Polar Satellite Launch Vehicle (PSLV) launcher, with dynamic loads from random vibrations being the predominant stress factor. To align with the ADCS mission requirements of ALSAT 1B observation satellite, the position and inclination angle of the sun sensors were modified, ranging from 70° to 50°. Through a combination of simulations and experimental validation, it was observed that the sun sensors exhibited significant responses due to their location on the satellite. However, subsequent verification procedures revealed no damage to the sensor modules, demonstrating their robustness under these conditions. The results confirm that the sun sensors are adequately qualified for flight, ensuring reliable performance without the risk of failure.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 5","pages":"415 - 426"},"PeriodicalIF":0.0,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073548","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}