{"title":"METRIC: A Dedicated Earth-Orbiting Spacecraft for Fundamental Physics and Geophysics","authors":"E. Lorenzini, R. Peron","doi":"10.1109/METROAEROSPACE.2018.8453539","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453539","url":null,"abstract":"A dedicated mission in low Earth orbit – called METRIC – is proposed to test selected predictions of gravitational theories and to measure directly the acceleration due to atmospheric drag in the altitude range considered, at the same time providing a metrological platform able to perform a tie between different space geodesy techniques. The core of the mission is a spacecraft of the micro class placed in an eccentric orbit between 450 and 1200 km of altitude. The satellite will be tracked from the ground with high precision and an on-board accelerometer package will measure the non-gravitational accelerations acting on it (e.g., atmospheric drag and solar radiation pressure). A precise orbit determination is expected to provide estimates of fundamental physics and geophysical parameters, while the accelerometer data are fundamental in constraining the atmospheric density variations. Along with the mission scientific objectives, a possible baseline for spacecraft configuration and a technique for the analysis of the non-gravitational perturbations is described in the paper.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132525849","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}
Konstantinos Malandrakis, A. Savvaris, Jose Angel Gonzalez Domingo, Nick Avdelidis, Panagiotis Tsilivis, Florence Plumacker, L. Z. Fragonara, Antonios Tsourdos
{"title":"Inspection of Aircraft Wing Panels Using Unmanned Aerial Vehicles","authors":"Konstantinos Malandrakis, A. Savvaris, Jose Angel Gonzalez Domingo, Nick Avdelidis, Panagiotis Tsilivis, Florence Plumacker, L. Z. Fragonara, Antonios Tsourdos","doi":"10.1109/METROAEROSPACE.2018.8453598","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453598","url":null,"abstract":"In large civil aircraft manufacturing a time-consuming post-production process is the non-destructive inspection of wing panels. This work aims to address this challenge and improve the defects' detection by performing automated aerial inspection using a small off-the-shelf multirotor. The UAV is equipped with a wide field-of-view camera and an ultraviolet torch for implementing non-invasive imaging inspection. In particular, the UAV is programmed to perform the complete mission and stream video, in real-time, to the ground control station where the defects' detection algorithm is executed. The proposed platform was mathematically modelled in MATLAB/SIMULINK in order to assess the behaviour of the system using a path following method during the aircraft wing inspection. The UAV was tested in the lab where a six-meter-long wing panel was one-side inspected. Initial results indicate that this inspection method could reduce significantly the inspection time, cost, and workload, whilst potentially increasing the probability of detection.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133283733","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":"Reliability Degradation, Preventive and Corrective Maintenance of UAV Systems","authors":"E. Petritoli, F. Leccese, L. Ciani","doi":"10.1109/METROAEROSPACE.2018.8453629","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453629","url":null,"abstract":"In this paper we examine the problem of the preventive and corrective maintenance of UAVs systems taking into account the specific needs of the unmanned machine (and therefore completely different from the needs of a normal airplane) to define the optimal maintenance interval. In the first part, we compare the issues of the maintenance philosophy for UAVs and develop problems related to the degradation of the performance of unmanned aircraft. In the second part, we examine the problem in an analytical way: in the probabilistic computation, we will insert the concepts of preventive and corrective maintenance that consider the degradation of the system. The system itself is understood as composed of a number of subsystems also their subjects (before the real “hard failure”) to partial performance degradation (“soft failure”).","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133347203","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}
G. Filacchione, F. Capaccioni, F. Altieri, C. Carli, L. Tommasi, I. F. Veltroni, M. Dami, G. Aroldi, D. Borrelli, A. Barbis, M. Baroni, G. Pastorini, R. Mugnuolo, G. Cremonese
{"title":"The Measurement of the Noise-Equivalent Spectral Radiance of SIMBIO-SYS/VIHI Spectrometer","authors":"G. Filacchione, F. Capaccioni, F. Altieri, C. Carli, L. Tommasi, I. F. Veltroni, M. Dami, G. Aroldi, D. Borrelli, A. Barbis, M. Baroni, G. Pastorini, R. Mugnuolo, G. Cremonese","doi":"10.1109/METROAEROSPACE.2018.8453616","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453616","url":null,"abstract":"We report about the measurement of the Noise-Equivalent Spectral Radiance (NESR) of the VIHI imaging spectromter aboard ESA's Bepi Colombo mission to Mercury. The knowledge of the NESR allows to determine the capability of an optical detector to measure faint signals. A description of the setup used to determine the NESR during the prelaunch calibration campaign is given. The processing of the data collected at various operative temperatures and integration times is described. The sensitivity study of the NESR has been performed at the expected detector's temperatures and integration times with the goal to determine the minimum spectral radiance at which VIHI is sensitive during the different observation phases of the mission. A simulation of the expected Signal-to-Noise Ratio (SNR) of VIHI during the different orbital phases is provided.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127989901","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}
P. Daponte, L. De Vito, Grazia Iadarola, S. Spinsante
{"title":"PRBS Selection for Velocity Measurements with Compressive Sampling-Based DS-CDMA Radio Navigation Receivers","authors":"P. Daponte, L. De Vito, Grazia Iadarola, S. Spinsante","doi":"10.1109/METROAEROSPACE.2018.8453591","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453591","url":null,"abstract":"The use of spread spectrum techniques is well consolidated in satellite radio navigation and communication systems, since several years. More recently, the Direct Sequence Spread Spectrum approach has found adoption also in Random Demodulation-based schemes implementing the so-called Compressive Sampling theory, that allows spread spectrum receivers to lower their sampling rate, thus overcoming the need to tradeoff sampling frequency and resolution in Analog to Digital Conversion. The obtainable performance are affected by several conditions, among which the selection of the chipping sequence to use. In this paper, different families of pseudorandom binary sequences are analyzed with respect to relevant identified metrics, for the possible improvement of velocity measurements with DS-CDMA radio navigation systems, when the classic Nyquist sampling receiver is replaced by a Compressive-Sensing based one. The simulation results show that the classical maximal length sequences can satisfy the requirements of both velocity measurements improvement and spread spectrum receiver at lower sampling rate.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121423291","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}
Haoqian Huang, T. Huang, Jun Zhou, Kangrui Hong, Zhiqiang Liu, Chen Qu
{"title":"Quasi-Newton Cubature Kalman Filitering Method Based on BFGS Correction Formula for Attitude Determination Applied to Underwater Glider","authors":"Haoqian Huang, T. Huang, Jun Zhou, Kangrui Hong, Zhiqiang Liu, Chen Qu","doi":"10.1109/METROAEROSPACE.2018.8453561","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453561","url":null,"abstract":"The performance of Micro-Electro-Mechanical System sensors is degraded seriously and errors will become much larger in the complex underwater environment, the measurements become unobservable particularly when the magnetic sensor is disturbed by external magnetic interference, resulting in the navigation information determined erroneously. In order to deal with the problem mentioned, the paper proposes a novel Quasi-Newton CKF method based on BFGS Correction Formula. This method makes better use of the superiority of the anti-interference ability and the computation efficiency to obtain navigation information with high accuracy for a long time of gliding. Meanwhile, BFGS Correction Formula, which is used in Quasi-Newton method, adopts the inaccurate linear search to improve the computational efficiency further.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128629542","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":"Application of Piezoelectric Sensors for Structural Health Monitoring in Aerospace","authors":"F. Kšica, Z. Hadaš, J. Hlinka","doi":"10.1109/METROAEROSPACE.2018.8453610","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453610","url":null,"abstract":"This paper deals with an innovative approach for SHM with piezoelectric elements utilized as active sensors. The increasing interest in reduction of maintenance costs of aircrafts can be solved by embedding permanent and self-sufficient monitoring networks into the structure of the aircraft in order to prevent structural failures. Piezoelectric elements are currently undergoing a rapid development and due to their inexpensive and non-intrusive nature, they can be used to assemble such monitoring networks. The proposed method utilizes a virtual model of the structure to pinpoint suitable locations for the sensors with respect to the requirement of local and global SHM, serving as an initial point for further research to describe behaviour of the structure during operation and predict any inadmissible state.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114671239","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":"Experimental Identification of Grassy Airfield Surface Geometry for the GARFIELD Database","authors":"J. Józwik, J. Pytka, A. Tofil","doi":"10.1109/METROAEROSPACE.2018.8453514","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453514","url":null,"abstract":"The paper presents a study on identification of grassy runway surface geometry that is required to describe airfields in the GARFIELD information system. The surface geometry includes surface unevenness and roughness and may change over time. The chosen identification methods-the GPS profilometry and LIDAR surface scanning-are easy and quick to use. The paper includes a description of the methods as well as results obtained for a sample grassy airfield","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126608950","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":"Test Data Modeling and Implementation with Enhanced Accuracy for the Diagnosis of a DUT provided with Real-World Failure Models","authors":"G. Uygur, W. Sörgel, Wolfgang Magerl, S. Sattler","doi":"10.1109/METROAEROSPACE.2018.8453535","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453535","url":null,"abstract":"We present our data modeling and implementation for testing a device of elementary digital as well as analog functions provided with real-world failure models as a jumper construction. A modeled open circuit failure is done by unplugging the (normally plugged) respective jumper, and analogously a modeled short circuit failure is done by plugging the (normally unplugged) respective jumper. The DUT is supplied by a current limited voltage power supply. The programmable current limitation activates the overcurrent relay to protect the device in case of short circuit failure. The ATE resources for stimuli, measure and test evaluation are provided by an adequate uC-Board with programmable analog-to-digital io-channels. The test automation is implemented by the firmware of the uC, which corresponds to the test program of a conventional ATE including the pin-mapping, the test function library and the test flow (schedule). With this in mind, we are speaking about the Micro-ATR (uATR). Within the use case above, we discuss the challenge for localization of the so called dominated (dominent) faults, which are not detectable uniquely due to the dominating faults within the scope of the stuck-at failure modeling. At this case the testing accuracy has to be enhanced. We solve this problem definition by deploying external current sources to provide additional stimuli at the given test points. Our approach results in the overall data modeling, which covers the test tree, the test flow, and the diagnose flow for fault localization.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126221851","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":"Shimming Analysis of Carbon-Fiber Composite Materials with Eddy Current Testing","authors":"Gianni D’Angelo, G. Cavaccini, S. Rampone","doi":"10.1109/METROAEROSPACE.2018.8453579","DOIUrl":"https://doi.org/10.1109/METROAEROSPACE.2018.8453579","url":null,"abstract":"This paper investigates the use of the Eddy Current Testing (ECT) for detecting gaps between carbon-fiber composite materials, caused by overlapping of assembly parts with geometrical variations. To this purpose, we use two overlapped carbon-fiber reinforced plastic (CFRP) tapes, while an increasing number of PVC sheets are placed between these tapes to vary the thickness of the gaps. Several experiments are carried out. For everyone, and for each considered gap, three ECT response parameters are extracted. The obtained data are used to train different machine learning-based classifiers to distinguish the gaps. Their validation, assessed through the 10-fold cross validation technique, proves the effectiveness of ECT as gaps detector for CFRP materials.","PeriodicalId":142603,"journal":{"name":"2018 5th IEEE International Workshop on Metrology for AeroSpace (MetroAeroSpace)","volume":"17 22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126709693","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}