V. Dutka, E. Gevorkyan, M. Rucki, Z. Siemiątkowski, D. Morozow, V. Chishkala
{"title":"Temperature Field During the Hot Pressing of Ceramic Gas Turbine Components","authors":"V. Dutka, E. Gevorkyan, M. Rucki, Z. Siemiątkowski, D. Morozow, V. Chishkala","doi":"10.1109/MetroAeroSpace51421.2021.9511672","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511672","url":null,"abstract":"In the paper, the process of hot vacuum pressing of Al2O3-based components of gas turbines is analyzed. Computer simulation of the temperature field in the installation of powdered billet of Al2O3-SiC was preformed using the finite element method. The model took into account the temperature dependence of the thermophysical properties of the materials of the installation elements and billet, as well as the thermal and electrical resistances in the contact area. Concordance between the obtained results of calculations and laboratory measurements of temperature proved the reliability of the model. The results of computer experiments show that by selecting the materials of the installation elements, it is possible to obtain homogeneous temperature field in the sample at the final stage of the sintering process. This way the energy consumption of the entire sintering process can be significantly reduce, and higher structural homogeneity of bulk material can be reached.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133345209","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":"Measurements of the Radar Cross Section of a nano-drone at K-band","authors":"A. Balleri","doi":"10.1109/MetroAeroSpace51421.2021.9511750","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511750","url":null,"abstract":"Nano-drones, are insect-like sized drones with a threat capability of intrusion to provide intelligence and potentially violate secure establishments and public privacy rights. They are an existing technology which is becoming increasingly more available, portable, affordable and easy to operate. As such, they represent a plausible defence and security threat. In this paper, a setup is presented that is used to measure the 3-dimensional Radar Cross Section (RCS) of a nano-drone for three elevation planes with a 5-degree resolution step in azimuth and elevation. The results presented in this paper are unique because there has been very little work, if any, in the existing literature attempting to measure the RCS of such small drones. They are also key to inform further work investigating the development of nano-drone detection radar systems as well as nano-drone detection and classification signal processing solutions.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"520 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133227883","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":"Transportable ATC Systems Metrology","authors":"M. Fiorini, Marco Galloro","doi":"10.1109/MetroAeroSpace51421.2021.9511735","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511735","url":null,"abstract":"Passenger traffic dropped 90% at the peak of the coronavirus pandemic according to an International Air Traffic Association (IATA) analysis in December 2020 and the complexity of restarting air transport is still evident today. New business models and technical solutions have to be figured out. Dual use technologies in the Air Traffic Control (ATC) domain seems to gain consideration moving towards a global two-way interoperability concept for peaceful and defense aims. The paper presents the Selex-SI, now Leonardo S.p.A., transportable ATC system consisting of a control center integrated with a radar system for easy deployment and set-up for civil and defense missions as required. The developed solution allows use in different scenarios: gap-filler, maintenance coverage, border control, crisis management, planned or unplanned defense mission. The system -which is already commissioned to various customers- could manage the Approach and the Terminal Area along with emergency scenarios.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114501067","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}
C. Conte, G. de Alteriis, Francesco de Pandi, E. Caputo, R. S. Lo Moriello, G. Rufino, D. Accardo
{"title":"Performance Analysis for Human Crowd Monitoring to Control COVID-19 disease by Drone Surveillance","authors":"C. Conte, G. de Alteriis, Francesco de Pandi, E. Caputo, R. S. Lo Moriello, G. Rufino, D. Accardo","doi":"10.1109/MetroAeroSpace51421.2021.9511671","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511671","url":null,"abstract":"This paper describes a configuration of drone swarm that can be used in support of the actions to limit the virus spread during a pandemic period, such as the COVID-19 emergency. The proposed study analyzes a system architecture for the identification of individuals affected by the virus, estimating their biomedical parameters. The presented method exploits different techniques, such as stereoscopy vision, thermal measures and remote photoplethysmography, to acquire standalone data that can be compared to evaluate the target risk. The tested solutions are proposed to measure the social distancing among multiple individuals, the skin temperature of a target person, and the image photoplethysmography signal, that are critical parameters to detect a potentially infect individual during the COVID-19 pandemic. Different test strategies were adopted to carry out the mentioned tasks. To measure the distance between target individuals, two drones equipped with visible band cameras were employed. To measure the skin temperature of a target, a drone equipped with a thermal camera was adopted, performing measures at different distances and heights. To obtain the image photoplethysmography signal, a video file from drone camera is processed. Image processing techniques are required to elaborate the data coming from several images and videos acquired by drones. Comparing the measures, altered biomedical parameters of several targets can be detected and later tested with medical equipment.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117011056","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":"2D Closed-Form Solution for the Measurement of the Angle of Attack and Sideslip Angle","authors":"A. Brandl, P. Gili","doi":"10.1109/MetroAeroSpace51421.2021.9511762","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511762","url":null,"abstract":"At the beginning of 2021, the measurement of the Angle of Attack and of the Angle of Sideslip is still mainly conducted with physical protruding probes. Although several alternative methods have been proposed in literature, the attention is generally focused on data-driven methods and little discussion is conducted on the mathematical problem. If the formulation that allows to associate the aerodynamic angles to other flight parameters has a closed-form solution is still an open question in the field. This paper provides a closed-form solution for a restricted problem where one of the two angle is known. Moreover, a linearized solution is provided. The result section gives evidence of the approach in simulated environment, showing the advantages of the nonlinear solution with respect to the linear one.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123533347","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}
L. Maio, J. Moll, V. Memmolo, J. Simon, Thomas Maetz, V. Krozer, A. Nuber, Stefan Krause, O. Bagemiel
{"title":"Detection of ice accretions on composite panels using FMCW radars at 60GHz","authors":"L. Maio, J. Moll, V. Memmolo, J. Simon, Thomas Maetz, V. Krozer, A. Nuber, Stefan Krause, O. Bagemiel","doi":"10.1109/MetroAeroSpace51421.2021.9511775","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511775","url":null,"abstract":"This paper encloses experimental results based on two FMCW-radars and shows the ability of such systems to detect ice on the surface of glass fibre composites. The investigation aims to define sensor nodes based on radar technology for wind turbines experiencing blade icing. Indeed, accumulation of ice on rotor blades can be critical, because pieces of ice can come loose and fly away. For this practically relevant scenario, herein it is studied a differential analysis approach where the dry state of a composite plate serves as baseline and ice layers are used as test cases. The same differential imaging concept can be applied for the detection of structural defects such as delaminations or debondings.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123619948","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":"WIG-craft Assistance for an Aerospace Plane in Its Horizontal Launch and Landing","authors":"A. Nebylov, V. Nebylov, A. Panferov","doi":"10.1109/MetroAeroSpace51421.2021.9511772","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511772","url":null,"abstract":"It is shown in the paper that the vertical launch vehicles could not provide presently the essential reducing of the launch cost because it is not easy to make all their stages reusable. That is why it is necessary to check the opportunity to provide the development of the multistage space launch system, all stages of which are winged and really reusable. Integrated launch systems that include aerospace plane (ASP) and a heavy ekranoplane as a booster are analysed and recommended for realisation.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124664557","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}
N. Mosca, C. Patruno, V. Renó, M. Nitti, E. Stella
{"title":"Qualitative comparison of methodologies for detecting surface defects in aircraft interiors","authors":"N. Mosca, C. Patruno, V. Renó, M. Nitti, E. Stella","doi":"10.1109/MetroAeroSpace51421.2021.9511778","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511778","url":null,"abstract":"Automated identification of parts showing defects have established itself as one of the key aspects in production factories during the second and third industrial revolutions, especially in sectors, such as the automotive, enjoying economies of scale. Automation can be exploited even in successive steps too, such as the final assembly of large manufactured goods, like aircrafts, where the usage of automated systems can provide judgement consistencies that may be challenging to obtain in more traditional ways. In this paper, different methodologies for the identification of visual features are compared together. These approaches cover both traditional computer vision techniques, such as SURF descriptors and machine learning based algorithms, namely a convolutional neural network, for the identification of surface defects in aircraft interiors. The comparison is performed at a qualitative level, enabling a discussion between pros and cons of each approach.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128463532","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":"Digital-Twins of composite aerostructures towards Structural Health Monitoring","authors":"Dimitrios P Milanoski, G. Galanopoulos, T. Loutas","doi":"10.1109/MetroAeroSpace51421.2021.9511653","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511653","url":null,"abstract":"The present work is primarily dedicated to the development and validation of a Digital Twin representative of an aeronautical structure. A finite element model is thus created to simulate the structural response of a composite single-stringer panel under compressive loading. Quasi-static tests are conducted and health monitoring techniques, i.e. displacement and strain measurements via digital image correlation and fiber Bragg grating sensors respectively, are utilized. The mechanical response of the model presents very good agreement with the experimental evidence. The validated model is then exploited, augmented by exogenous details, i.e. external loading, to train a surrogate mathematical model. The resultant surrogate maps efficiently the Digital Twin strains with respect to the load. This advantage is envisaged by the Digital-Twin concept where realtime data flowing from the physical twin would be used to detect the presence of skin-to-stringer disbonds. The proposed methodology is tested for the case of an artificially disbonded panel, subjected to block loading compression-compression fatigue, utilizing static strains periodically acquired during several quasi-static test intervals.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128212823","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":"Interference Mitigation and T-RAIM for Robust GNSS Timing","authors":"C. Gioia, D. Borio","doi":"10.1109/MetroAeroSpace51421.2021.9511655","DOIUrl":"https://doi.org/10.1109/MetroAeroSpace51421.2021.9511655","url":null,"abstract":"Several layers of defense exist to improve Global Navigation Satellite System (GNSS) receiver performance in the presence of interference. These defenses are implemented at different receiver stages and include pre-correlation interference mitigation, post-correlation measurement screening and Fault Detection and Exclusion (FDE) at the Position, Velocity, and Time (PVT) level. This paper investigates the performance and interaction of these receiver defenses with specific focus on Robust Interference Mitigation (RIM) and Receiver Autonomous Integrity Monitoring (RAIM). The case of timing receivers with a known user position and Time-Receiver Autonomous Integrity Monitoring (T-RAIM) is also analysed. From the experimental analysis it emerges that RIM improves the quality of the measurements reducing the number of exclusions performed by RAIM. When timing solutions are considered, a more redundant measurement set is available and more exclusions are performed by T-RAIM, which is able to enhance solution reliability without compromising its availability.","PeriodicalId":236783,"journal":{"name":"2021 IEEE 8th International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129837922","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}