Aerotecnica Missili & Spazio最新文献_第2页

Angle of Attack Effects on the Induced Structural Loads of a Weapons Bay 攻角对武器舱诱导结构载荷的影响

Aerotecnica Missili & Spazio Pub Date : 2024-12-03 DOI: 10.1007/s42496-024-00240-6

David Bacci, Alistair J. Saddington

引用次数: 0

A Model-Based Systems Engineering Digital Certification Framework for General Aviation Aircraft 通用航空飞机基于模型的系统工程数字认证框架

Aerotecnica Missili & Spazio Pub Date : 2024-11-27 DOI: 10.1007/s42496-024-00241-5

Claudio Mirabella, Michele Tuccillo, Pierluigi Della Vecchia

{"title":"A Model-Based Systems Engineering Digital Certification Framework for General Aviation Aircraft","authors":"Claudio Mirabella, Michele Tuccillo, Pierluigi Della Vecchia","doi":"10.1007/s42496-024-00241-5","DOIUrl":"10.1007/s42496-024-00241-5","url":null,"abstract":"<div><p>This article studies a new, fully digital approach towards General Aviation (GA) aircraft certification. Model-Based Systems Engineering (MBSE) techniques will be used to develop a Digital Certification Pipeline (DCP) to support both conventional and innovative, unconventional aircraft configurations to be certified under the European Union Aviation Safety Agency (EASA) Certification Specifications CS-23, including electric/hybrid propulsion systems (EHPS) and distributed propulsion (DP) configurations. The DCP will produce all the EASA-required certification artifacts, transitioning from the past document-based paradigm to a more effective, less error-prone, digital certification process. All certification artefacts will be centrally managed, with only minor corrections needed before the final submission to the Certification Agency. The DCP will represent an easy-to-use, effective tool to reduce certification time and costs, enabling aircraft manufacturers to introduce new aircraft models with high safety standards for the future of the GA market. Future developments are discussed at the end of the article, evaluating the possible extension of the paradigm used to CS-25.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 5","pages":"371 - 386"},"PeriodicalIF":0.0,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073849","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

Atlas of Lunar Historical Sites and Proposed Bases and Infrastructure 月球历史遗迹及拟建基地和基础设施地图集

Aerotecnica Missili & Spazio Pub Date : 2024-11-24 DOI: 10.1007/s42496-024-00239-z

James Q. Mostek, Travis M. Grile, Robert A. Bettinger, Alexander M. Petrocelli, Nathan R. Boone

{"title":"Atlas of Lunar Historical Sites and Proposed Bases and Infrastructure","authors":"James Q. Mostek, Travis M. Grile, Robert A. Bettinger, Alexander M. Petrocelli, Nathan R. Boone","doi":"10.1007/s42496-024-00239-z","DOIUrl":"10.1007/s42496-024-00239-z","url":null,"abstract":"<div><p>The 21st century has witnessed an expansion of space operations throughout the Earth–Moon system and the wider Solar System with the introduction of new space-faring countries, decreasing costs of space access, and advances in space system technologies. Many countries are endeavoring to move outside geosynchronous orbit to pursue missions in cislunar space and lunar orbit, as well as on the lunar surface, with invigorated U.S., Chinese, and Russian lunar mission initiatives being principle examples. Coalescing international efforts to return to the Moon may result in not only the pursuance of short-duration crewed lunar missions, but also the attainment of the first extraterrestrial human settlement(s) and the establishment of a permanent lunar base. Site selection for short-duration soft landings and the construction of basing/infrastructure will become a critical function to enhance mission assurance and operational safety. In this paper, an atlas of human activity on the lunar surface is presented featuring a concise mapping of locations associated with historical lunar impactor and soft-landing sites and proposed future basing and infrastructure reports. The atlas seeks to enable a holistic depiction of lunar surface activity to gain insight into where future lunar bases may be located and establish historical patterns of proposed basing.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 5","pages":"355 - 370"},"PeriodicalIF":0.0,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145073636","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

Mini-IRENE, a Successful Re-entry Flight of a Deployable Heatshield Capsule Mini-IRENE，可展开隔热舱的成功再入飞行

Aerotecnica Missili & Spazio Pub Date : 2024-11-02 DOI: 10.1007/s42496-024-00237-1

Stefano Mungiguerra, Roberto Gardi, Raffaele Savino, Paolo Vernillo, Luca Ferracina, Francesco Punzo, Maurizio Ruggiero, Renato Aurigemma, Pasquale Dell’Aversana, Luciano Gramiccia, Samantha Ianelli, Giovanni D’Aniello, Marta Albano, Gunnar Florin

{"title":"Mini-IRENE, a Successful Re-entry Flight of a Deployable Heatshield Capsule","authors":"Stefano Mungiguerra, Roberto Gardi, Raffaele Savino, Paolo Vernillo, Luca Ferracina, Francesco Punzo, Maurizio Ruggiero, Renato Aurigemma, Pasquale Dell’Aversana, Luciano Gramiccia, Samantha Ianelli, Giovanni D’Aniello, Marta Albano, Gunnar Florin","doi":"10.1007/s42496-024-00237-1","DOIUrl":"10.1007/s42496-024-00237-1","url":null,"abstract":"<div><p>This paper presents the results of the suborbital flight of the Mini-IRENE Flight Experiment (MIFE), flight demonstrator of the IRENE (Italian Re-Entry NacellE) technology, a variable-geometry re-entry capsule for Low-Earth Orbit payloads. A capsule equipped with a mechanically deployable heat shield was successfully launched with a VSB-30 suborbital rocket from the Esrange base in Sweden, achieving an apogee of 260 km, a peak deceleration of 12 g and surviving the landing with successful retrieval. A huge set of telemetry data was acquired, including GPS, attitude, temperature, pressure, acceleration measurements. The capsule showed aerodynamic stability at all flight regimes. The peaks of deceleration and dynamic pressure were higher than predicted, as if drag was lower than expected during supersonic descent, but the capsule successfully survived landing, validating the mechanical resistance of the design even after ground impact.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 4","pages":"337 - 352"},"PeriodicalIF":0.0,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145141870","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

Semantic Terrain Traversability Analysis Based on Deep Learning Aimed at Planetary Rover Navigation 基于深度学习的行星漫游车导航语义地形可遍历性分析

Aerotecnica Missili & Spazio Pub Date : 2024-10-30 DOI: 10.1007/s42496-024-00238-0

Giulio Polato, Sebastiano Chiodini, Andrea Valmorbida, Marco Pertile, Giada Giorgi, Enrico C. Lorenzini

{"title":"Semantic Terrain Traversability Analysis Based on Deep Learning Aimed at Planetary Rover Navigation","authors":"Giulio Polato, Sebastiano Chiodini, Andrea Valmorbida, Marco Pertile, Giada Giorgi, Enrico C. Lorenzini","doi":"10.1007/s42496-024-00238-0","DOIUrl":"10.1007/s42496-024-00238-0","url":null,"abstract":"<div><p>Autonomous navigation is becoming an increasing area of interest, especially in the space sector. This is evident in the development of planetary exploration rovers, which rely heavily on terrain traversability capabilities to explore extraterrestrial terrains. This technology assesses the ability of a rover to identify potential obstacles of a given terrain based on its physical characteristics and visual appearance. In this paper, we present an innovative architecture tailored for such analysis. Our approach combines stereo visual SLAM for trajectory reconstruction with supervised learning from labeled ground-truth data, specifically utilizing DeepLabv3+, for precise pixel labeling of terrain types. The segmented point cloud generated from stereo vision is then converted into an occupancy grid map, facilitating comprehensive terrain characterization. Implementing our method within the Robot Operating System (ROS) framework enables seamless integration with rover systems. The proposed system was deployed and tested on a prototype rover, successfully demonstrating its ability to map the surrounding environment and identify potential obstacles. Finally, the realized mapping is compared with satellite images, and the results prove the effectiveness of the studied algorithm to carry out terrain traversability analysis.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 4","pages":"325 - 335"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145618","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

AIDAA News #24 AIDAA 新闻 #24

Aerotecnica Missili & Spazio Pub Date : 2024-10-14 DOI: 10.1007/s42496-024-00235-3

Michele Guida

引用次数: 0

Dynamic Modelling and Performance Analysis of Deployable Telescopic Tubular Mast 可展开伸缩管状桅杆的动力学建模与性能分析

Aerotecnica Missili & Spazio Pub Date : 2024-09-27 DOI: 10.1007/s42496-024-00234-4

Tongtong Sun, Paolo Gasbarri, Lin Du, Zichen Deng

{"title":"Dynamic Modelling and Performance Analysis of Deployable Telescopic Tubular Mast","authors":"Tongtong Sun, Paolo Gasbarri, Lin Du, Zichen Deng","doi":"10.1007/s42496-024-00234-4","DOIUrl":"10.1007/s42496-024-00234-4","url":null,"abstract":"<div><p>This work presents the longitudinal and transverse coupling vibrations of a deployable Telescopic Tubular Mast (TTM), a multi-stepped structure integrated into a spacecraft system, while considering the rigid-flexible coupling phenomenon. The model is derived using the principle of virtual work and discretized via the variable separation method. The von Kármán strain is employed to incorporate geometric nonlinear effects. Semi-analytical results for the shape functions and natural frequencies of the quasi-static multi-stepped boom are obtained using the extended transfer matrix method (ETMM). These natural frequencies are validated against results from Nastran, confirming the ETMM's accuracy. In addition, the model accounts for the continuously changing natural frequencies and shape functions during the deployment phase. Finally, the dynamic phenomena of the longitudinal and transverse displacements are analyzed at various deploying states, including locking and restart behaviors. The influence of the structural damping on the vibration evolution is also contained in the numerical analysis.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 4","pages":"311 - 323"},"PeriodicalIF":0.0,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-024-00234-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145040","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

Energy Absorption Through Radiation in Multilayer Windows for Spacecrafts 航天器多层窗口辐射吸收能量的研究

Aerotecnica Missili & Spazio Pub Date : 2024-09-16 DOI: 10.1007/s42496-024-00233-5

Laura Galuppi, Gianni Royer-Carfagni

{"title":"Energy Absorption Through Radiation in Multilayer Windows for Spacecrafts","authors":"Laura Galuppi, Gianni Royer-Carfagni","doi":"10.1007/s42496-024-00233-5","DOIUrl":"10.1007/s42496-024-00233-5","url":null,"abstract":"<div><p>The overall heating of satellites operating in low Earth orbit, essentially due to direct radiation from the Sun, terrestrial albedo, and planetary radiation, is well studied, but little is found specifically on transparent plates used for windowing spacecrafts. The most historic material of choice is fused silica; more recently, acrylic glass is being used, but its refractive properties are poorly documented. The effects of electromagnetic waves incident on multilayer windows composed of panes of fused silica or acrylic glass, or a combination of these, are analyzed. Using data of refractive index from the literature, which, however, have been found incomplete and sometimes contradictory, the problem is addressed by accounting for the dependence of transmissivity and absorptivity of each material on the energy spectrum, which is different for solar and planetary radiation. Worked examples show that fused silica allows most radiation to pass directly through, while acrylic glass is characterized by absorption depending on the thickness; this can potentially increase its temperature, posing a problem since the mechanical properties decay at temperatures near <span>(100 ^{circ }textrm{C})</span>. This study contributes to the analysis of thermal problems for space windows, of considerable interest since glazing can fail due to thermal shocks, constrained thermal variations, or temperature concentrations.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 4","pages":"293 - 310"},"PeriodicalIF":0.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-024-00233-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145143820","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

Numerical Analysis of the Impact of Process Parameters on the Residual Stress of a Flat Composite Part 工艺参数对平面复合材料零件残余应力影响的数值分析

Aerotecnica Missili & Spazio Pub Date : 2024-08-01 DOI: 10.1007/s42496-024-00231-7

E. Zappino, M. Santori, R. Masia, N. Zobeiry, M. Petrolo

引用次数: 0

Continuum and Discrete Analytical Methods for Vibration and Buckling Eigenvalues Shape Sensitivities 振动和屈曲特征值形状灵敏度的连续和离散分析方法

Aerotecnica Missili & Spazio Pub Date : 2024-07-31 DOI: 10.1007/s42496-024-00232-6

Giuseppe Maurizio Gagliardi, Mandar D. Kulkarni, Francesco Marulo

{"title":"Continuum and Discrete Analytical Methods for Vibration and Buckling Eigenvalues Shape Sensitivities","authors":"Giuseppe Maurizio Gagliardi, Mandar D. Kulkarni, Francesco Marulo","doi":"10.1007/s42496-024-00232-6","DOIUrl":"10.1007/s42496-024-00232-6","url":null,"abstract":"<div><p>Gradient-based optimization techniques need precise and efficient sensitivities. Numerical sensitivity methods such as finite differences are easy to implement but imprecise and computationally inefficient. In contrast, analytical sensitivity methods, such as the discrete and continuum ones are highly accurate and efficient. Continuum Sensitivity Analysis (CSA) is an analytical method used to calculate derivatives of shape or value parameters. While CSA has been successfully applied in static analysis and dynamic problems in the time domain, this work presents an extension of the approach to eigenvalue sensitivities for the first time. However, CSA revealed limitations, prompting the exploration of an alternative approach based on discrete analytical differentiation. This method is employed for the first time in shape sensitivities. The derivatives of the stiffness and mass matrices required by the method are calculated analytically, resulting in high accuracy and computational efficiency. In addition, an element agnostic approach has been developed leveraging primary analysis matrices to calculate their derivative. This characteristic, along with the nonintrusivity, makes the method employable with standard commercial software. Both approaches have been applied and validated in a wide range of scenarios, involving vibration and buckling problems.</p></div>","PeriodicalId":100054,"journal":{"name":"Aerotecnica Missili & Spazio","volume":"104 4","pages":"259 - 275"},"PeriodicalIF":0.0,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42496-024-00232-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145145715","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