Aerotecnica Missili & Spazio最新文献_第4页

Analysis of Collision Avoidance Manoeuvres Using Aerodynamic Drag for the Flying Laptop Satellite 利用气动阻力分析飞行笔记本电脑卫星的防撞机动性能

Aerotecnica Missili & Spazio Pub Date : 2023-11-11 DOI: 10.1007/s42496-023-00183-4

Fabrizio Turco, Constantin Traub, Steffen Gaißer, Jonas Burgdorf, Sabine Klinkner, Stefanos Fasoulas

{"title":"Analysis of Collision Avoidance Manoeuvres Using Aerodynamic Drag for the Flying Laptop Satellite","authors":"Fabrizio Turco, Constantin Traub, Steffen Gaißer, Jonas Burgdorf, Sabine Klinkner, Stefanos Fasoulas","doi":"10.1007/s42496-023-00183-4","DOIUrl":"10.1007/s42496-023-00183-4","url":null,"abstract":"<div><p>Collision avoidance is a topic of growing importance for any satellite orbiting Earth. Especially those satellites without thrusting capabilities face the problem of not being able to perform impulsive collision avoidance manoeuvres. For satellites in low Earth orbits, though, perturbing accelerations due to aerodynamic drag may be used to influence their trajectories, thus offering a possibility to avoid collisions without consuming propellant. Here, this manoeuvring option is investigated for the satellite <i>Flying Laptop</i> of the University of Stuttgart, which orbits the Earth at approximately <span>({600},{textrm{km}})</span>. In a first step, the satellite is aerodynamically analysed making use of the tool ADBSat. By employing an analytic equation from the literature, in-track separation distances can then be derived following a variation of the ballistic coefficient through a change in attitude. A further examination of the achievable separation distances proves the feasibility of aerodynamic collision avoidance manoeuvres for the <i>Flying Laptop</i> for moderate and high solar and geomagnetic activity. The predicted separation distances are further compared to flight data, where the principle effect of the manoeuvre on the satellite trajectory becomes visible. The results suggest an applicability of collision avoidance manoeuvres for all satellites in comparable and especially in lower orbits than the <i>Flying Laptop</i>, which are able to vary their ballistic coefficient.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"103 1","pages":"61 - 71"},"PeriodicalIF":0.0,"publicationDate":"2023-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-023-00183-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135041984","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}

引用次数: 0

AIDAA News #20 AIDAA 新闻 #20

Aerotecnica Missili & Spazio Pub Date : 2023-11-04 DOI: 10.1007/s42496-023-00179-0

Michele Guida

引用次数: 0

Modelling the Wall Pressure Fluctuations on the VEGA-C Launcher in Supersonic Conditions 超音速条件下 VEGA-C 发射器壁压波动建模

Aerotecnica Missili & Spazio Pub Date : 2023-10-25 DOI: 10.1007/s42496-023-00181-6

R. Camussi, Alessandro Di Marco, Elisa De Paola, Gerorgiana Luana Stoica, Cornelius Stoica, Fabio Paglia, Luca Romano, Daniele Barbagallo

{"title":"Modelling the Wall Pressure Fluctuations on the VEGA-C Launcher in Supersonic Conditions","authors":"R. Camussi, Alessandro Di Marco, Elisa De Paola, Gerorgiana Luana Stoica, Cornelius Stoica, Fabio Paglia, Luca Romano, Daniele Barbagallo","doi":"10.1007/s42496-023-00181-6","DOIUrl":"10.1007/s42496-023-00181-6","url":null,"abstract":"<div><p>The prediction of pressure fluctuations generated over the external surface of aerospace launchers during the atmospheric flight remains a challenging task due to the complexity of the geometry and the effects of compressibility at high supersonic Mach numbers. An experimental database is here analysed to the scope of providing a procedure to model and predict the relevant statistics of the wall pressure fluctuations generated by a supersonic flow overflowing the VEGA-C Launcher Vehicle. Data have been obtained in an extensive Wind Tunnel test campaign carried out in the trisonic wind tunnel of the National Institute for Aerospace Research (INCAS) in Bucharest. Wall-mounted pressure transducers allowed for the computation of the pressure Auto- and Cross-spectra over the fourth (the payload region) and third stages of the launcher model. Coherence functions are modelled through exponential-like analytical functions following the approaches usually adopted in canonical boundary layer flows, whereas the auto-spectra models are based on polynomial fits. The approach adopted for the achievement of proper non-dimensional quantities as well as the procedure implemented for the full-scale extrapolation is presented and discussed.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"103 1","pages":"73 - 81"},"PeriodicalIF":0.0,"publicationDate":"2023-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-023-00181-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134971804","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}

引用次数: 0

Extended Sufficient Conditions of Strong Minimality for the Bolza Problem with Bang Bang Controls. Applications to Space Trajectory Optimization 带砰砰控制的博尔扎问题强最小性的扩展充分条件。空间轨迹优化的应用

Aerotecnica Missili & Spazio Pub Date : 2023-10-19 DOI: 10.1007/s42496-023-00175-4

Leonardo Mazzini

引用次数: 0

Sensitivity Analysis of a Damage Detection Method Through High-Resolution Photos on Various Statically Deflected Beams 通过高分辨率照片对各种静态偏转梁进行损伤检测方法的灵敏度分析

Aerotecnica Missili & Spazio Pub Date : 2023-10-14 DOI: 10.1007/s42496-023-00182-5

Andrea Vincenzo De Nunzio, Giada Faraco, Nicola Ivan Giannoccaro, Arcangelo Messina

{"title":"Sensitivity Analysis of a Damage Detection Method Through High-Resolution Photos on Various Statically Deflected Beams","authors":"Andrea Vincenzo De Nunzio, Giada Faraco, Nicola Ivan Giannoccaro, Arcangelo Messina","doi":"10.1007/s42496-023-00182-5","DOIUrl":"10.1007/s42496-023-00182-5","url":null,"abstract":"<div><p>In this manuscript, the authors deeply investigate and test a modern technique that allows the analysis of a structure starting from a photo to identify and locate damage present on it, rapidly and non-destructively without any physical interaction with the analyzed structure. The technique suitability is tested on four statically deformed beams, on which notches represent the defects. The core of the proposed method is the correlation between the curvature that each beam presents under load conditions and its flexural stiffness. The proposed methodology consists in taking a photo of the inflected beam; subsequently, the acquired photo is manipulated with specifically designed image processing tools, and the second derivative of the beam axis is estimated using two distinct numerical differentiator filters (Lanczos filter and Gaussian wavelets) along with suitable processing to reduce border distortions. The tests conducted demonstrate that it is possible, with an opportune static deflection amplitude, to accurately detect the position of the notch with the proposed procedure; a sensitivity analysis is also conducted by testing the procedure with different beam thicknesses, notch positions, and amplitude of the static deflection. Although the authors realize that the technique can generally require sensibly large displacements, the results seem promising.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"103 2","pages":"129 - 135"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-023-00182-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135803562","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}

引用次数: 0

Determining Dynamic Stability of a Re-entry Capsule at Free Fall 确定再入太空舱自由落体时的动态稳定性

Aerotecnica Missili & Spazio Pub Date : 2023-10-13 DOI: 10.1007/s42496-023-00180-7

C. Priyant Mark, Winston Netto

引用次数: 0

Acknowledgements to Prof. Aldo Frediani from the Italian Association of Aeronautics and Astronautics 感谢意大利航空航天协会Aldo Frediani教授

Aerotecnica Missili & Spazio Pub Date : 2023-10-12 DOI: 10.1007/s42496-023-00178-1

Erasmo Carrera, Sergio De Rosa

引用次数: 0

Use of the 3D Equilibrium Equations in the Free-Edge Analyses for Laminated Structures with the Variable Kinematics Approach 在采用可变运动学方法对层状结构进行自由边缘分析时使用三维平衡方程

Aerotecnica Missili & Spazio Pub Date : 2023-10-08 DOI: 10.1007/s42496-023-00177-2

D. Scano, E. Carrera, M. Petrolo

引用次数: 0

Review of the Recent Developments About the Hybrid Propelled Aircraft 混合动力飞机最新发展回顾

Aerotecnica Missili & Spazio Pub Date : 2023-09-28 DOI: 10.1007/s42496-023-00173-6

L. M. Cardone, G. Petrone, S. De Rosa, F. Franco, C. S. Greco

{"title":"Review of the Recent Developments About the Hybrid Propelled Aircraft","authors":"L. M. Cardone, G. Petrone, S. De Rosa, F. Franco, C. S. Greco","doi":"10.1007/s42496-023-00173-6","DOIUrl":"10.1007/s42496-023-00173-6","url":null,"abstract":"<div><p>In the past decades, the exponential rise in fossil fuel consumption has led to a pressing need for sustainable energy solutions. This surge in fossil fuel use has not only caused severe environmental repercussions but has also raised questions about our global dependence on such non-renewable resources. Addressing these detrimental effects, NASA has urged the aeronautic industry to reduce aircraft fuel burn by a substantial 70% before 2025. As a result of comprehensive government and industry studies, electric aircraft propulsion has emerged as a pivotal focus of research. This encompasses various architectures, such as full-electric, hybrid electric, and turbo-electric systems. The aim is to significantly diminish the environmental impact of aviation and make it more sustainable for the future of passenger flight. This paper provides an overview of the latest state-of-the-art innovations in propulsion systems. It delves into the operational principles, technological requirements, ongoing research, and development efforts pertaining to all components essential for effecting this transformation in aviation technology. Additionally, the document will showcase existing commercial products, prototypes, and demonstrators to offer a comprehensive picture of the current scenario. Overall, this research is a vital step toward achieving energy sustainability and reducing the environmental footprint of the aviation industry. By exploring and advancing electric aircraft propulsion, humanity can move closer to a cleaner, greener future for air travel.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"103 1","pages":"17 - 37"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-023-00173-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135420306","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}

引用次数: 0

A CFD-Based Collaborative Approach for Box-Wing Aircraft Aerodynamic Assessment: The PARSIFAL Study Case 基于cfd的箱翼飞机气动评估协同方法:PARSIFAL研究案例

Aerotecnica Missili & Spazio Pub Date : 2023-09-17 DOI: 10.1007/s42496-023-00172-7

Karim Abu Salem, Giuseppe Palaia, Marco Carini, Michaël Méheut, Marco Maganzi, Carmine Falcone

{"title":"A CFD-Based Collaborative Approach for Box-Wing Aircraft Aerodynamic Assessment: The PARSIFAL Study Case","authors":"Karim Abu Salem, Giuseppe Palaia, Marco Carini, Michaël Méheut, Marco Maganzi, Carmine Falcone","doi":"10.1007/s42496-023-00172-7","DOIUrl":"10.1007/s42496-023-00172-7","url":null,"abstract":"<div><p>This article presents a detailed aerodynamic investigation on a transport aircraft with a box-wing lifting system. The aerodynamic development of this configuration is presented through the description of the collaborative and multi-fidelity design approach that took place within PARSIFAL, an European project aiming to develop the box-wing configuration for a civil transonic aircraft. The article starts from an accurate description of the collaborative methodological framework employed and offers an overview of the development of the box-wing aerodynamics together with the highlight on its most significant characteristics and aerodynamic features identified. The design development is detailed step by step, with specific focus on the challenges faced, starting from the conceptual investigations up to the most advanced evaluations. Significant focus is given to the assessment of the aerodynamic performance in transonic flight for the box-wing lifting system, and to the design solutions provided to overcome issues related to this flight regime, such as drag rise and flow separation. In addition, the high-fidelity shape optimisation techniques employed in the advanced stage of the design process are detailed; these allow to define a final configuration with improved aerodynamic performance.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"102 4","pages":"385 - 407"},"PeriodicalIF":0.0,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-023-00172-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134796959","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}

引用次数: 1