Materials Research Society symposia proceedings. Materials Research Society最新文献_第8页

Multidisciplinary design, analysis and optimization of fixed-wing airborne wind energy systems 固定翼机载风能系统多学科设计、分析与优化

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-30

F. Trevisi

引用次数: 0

Navigation services from large constellations in low earth orbit 来自近地轨道大星座的导航服务

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-24

G.B. Palmerini

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Analysis of the manufacturing signature on AFP-manufactures variable stiffness composite panels afp公司变刚度复合板的制造特征分析

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-69

A. Pagani

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Mechanical and pneumatic design and testing of a floating module for zero-gravity motion simulation 用于零重力运动模拟的浮动模块的机械和气动设计与测试

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-118

S. Galleani

{"title":"Mechanical and pneumatic design and testing of a floating module for zero-gravity motion simulation","authors":"S. Galleani","doi":"10.21741/9781644902813-118","DOIUrl":"https://doi.org/10.21741/9781644902813-118","url":null,"abstract":"Abstract Close proximity operations demand an accurate control in a micro-gravity environment, hence they must be reproduced and simulated systematically. Consequently, laboratory tests are a crucial aspect to validate the performances of space systems. This paper presents the development of a floating pneumatic module, whose dimensions and mass are representative of a 12U CubeSat. The vehicle has been designed to perform planar low friction motion over a levelled table for docking experiments. The paper focuses on the pneumatic and mechanical designs and on the laboratory tests of the module. The pneumatic design regards the air-compressed pneumatic system. The major specifics have been determined by the requirement of performing a docking procedure by starting from a distance of 500 mm. The mechanical design has been guided by two main requirements. The first is the possibility to accommodate different docking systems (e.g.: docking port). The second is the possibility to control the position of the centre of mass of the module. Several tests have been performed to verify the capabilities of the vehicle, such as: (1) pneumatic tests to evaluate the thrust of the propulsion system through the execution of linear motions and (2) mechanical measurements with dedicated setups to improve the estimation of the position of the centre of mass from the CAD model of the system.","PeriodicalId":87445,"journal":{"name":"Materials Research Society symposia proceedings. Materials Research Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135370366","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

Tracking particles ejected from active asteroid Bennu with event-based vision 用基于事件的视觉追踪从活动小行星Bennu喷射出的粒子

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-124

L.J. Azzalini

{"title":"Tracking particles ejected from active asteroid Bennu with event-based vision","authors":"L.J. Azzalini","doi":"10.21741/9781644902813-124","DOIUrl":"https://doi.org/10.21741/9781644902813-124","url":null,"abstract":"Abstract. Early detection and tracking of ejecta in the vicinity of small solar system bodies is crucial to guarantee spacecraft safety and support scientific observation. During the visit of active asteroid Bennu, the OSIRIS-REx spacecraft relied on the analysis of images captured by onboard navigation cameras to detect particle ejection events, which ultimately became one of the mission’s scientific highlights. To increase the scientific return of similar time-constrained missions, this work proposes an event-based solution that is dedicated to the detection and tracking of centimetre-sized particles. Unlike a standard frame-based camera, the pixels of an event-based camera independently trigger events indicating whether the scene brightness has increased or decreased at that time and location in the sensor plane. As a result of the sparse and asynchronous spatiotemporal output, event cameras combine very high dynamic range and temporal resolution with low-power consumption, which could complement existing onboard imaging techniques. This paper motivates the use of a scientific event camera by reconstructing the particle ejection episodes reported by the OSIRIS-REx mission in a photorealistic scene generator and in turn, simulating event-based observations. The resulting streams of spatiotemporal data support future work on event-based multi-object tracking.","PeriodicalId":87445,"journal":{"name":"Materials Research Society symposia proceedings. Materials Research Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135370397","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

Labyrinth quarter-wavelength tubes array for the reduction of machinery noise 用于降低机械噪声的四分之一波长迷宫式管阵

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-158

G. Catapane

引用次数: 0

A combustion-driven facility to study phenomenologies related to hypersonic sustained flight 一种用于研究高超声速持续飞行现象的燃烧驱动装置

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-47

A. Esposito

引用次数: 0

Refined structural theories for dynamic and fatigue analyses of structure subjected to random excitations 精细化结构理论，用于结构在随机激励下的动力和疲劳分析

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-100

M. Filippi

引用次数: 0

Virtual element method for damage modelling of two-dimensional metallic lattice materials 二维金属点阵材料损伤建模的虚元法

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-85

M. Lo Cascio

{"title":"Virtual element method for damage modelling of two-dimensional metallic lattice materials","authors":"M. Lo Cascio","doi":"10.21741/9781644902813-85","DOIUrl":"https://doi.org/10.21741/9781644902813-85","url":null,"abstract":"Abstract. Additively-manufactured metallic lattice materials are a class of architectured solids that is becoming increasingly popular due to their unique cellular structure, which can be engineered to meet specific design requirements. Understanding and modelling the damage in these innovative materials is a significant challenge that must be addressed for their effective use in aerospace applications. The Virtual Element Method (VEM) is a numerical technique recently introduced as a generalisation of the FEM capable of handling meshes comprising an assemblage of generic polytopes. This advantage in creating domain discretisation has already been used to model the behaviour of materials with complex microstructures. This work employs a numerical framework based on a nonlinear VEM formulation combined with a continuum damage model to study the fracture behaviour of two-dimensional metallic lattice material under static loading. VEM's effectiveness in modelling lattice failure behaviour is assessed through several numerical tests. The influence of micro-architecture on the material's failure behaviour and macroscopic mechanical performance is discussed.","PeriodicalId":87445,"journal":{"name":"Materials Research Society symposia proceedings. Materials Research Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135370728","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

The ESA PANGAEA programme: training astronauts in field science 欧空局泛大陆计划:训练宇航员野外科学

Materials Research Society symposia proceedings. Materials Research Society Pub Date : 2023-11-01 DOI: 10.21741/9781644902813-154

M. Massironi

{"title":"The ESA PANGAEA programme: training astronauts in field science","authors":"M. Massironi","doi":"10.21741/9781644902813-154","DOIUrl":"https://doi.org/10.21741/9781644902813-154","url":null,"abstract":"Abstract. PANGAEA (Planetary ANalogue Geological and Astrobiological Exercise for Astronauts) is a field training course designed by the European Space Agency (ESA) that, since 2016, has imparted to ESA and NASA astronauts, and Roscosmos cosmonauts the basic theoretical and practical knowledge of geology and astrobiology and trained them in the field. Hence developing independent field skills, including working with a remotely located science team, is a key part of the training. For this reason, classroom and field lessons are tightly interwoven so that the concepts introduced in the classroom are shown in the field soon afterwards. The primary field sites selected for the course are the Permo-Triassic sedimentary sequences in the Italian Dolomites, analogue to the Martian alluvial plains ones, the impact geological environment of the Ries Crater, Germany, a comprehensive suite of volcanic emplacements and deposits in Lanzarote, Spain, and the anorthosite outcrops, analogue to lunar highlands rocks, in Lofoten, Norway. Each site is used as a base to deliver the main learning sessions, respectively: 1) Earth geology, rock recognition and sedimentology on Earth and Mars, 2) Lunar geology and impact cratering, 3) volcanism on Earth, Moon, and Mars, and astrobiology 4) intrusive rocks and lunar primordial crustal evolution. The four sessions are designed to increase the trainees’ autonomy in the field up to autonomously executed geological traverses including sampling activities. Whilst PANGAEA’s primary focus is astronaut training, where appropriate, technologies being developed for future missions are used to evaluate their performances in analogue field envi-ronments and to train the astronauts in using technologies that might support future missions.","PeriodicalId":87445,"journal":{"name":"Materials Research Society symposia proceedings. Materials Research Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135370805","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