Deliverables Documents, reports (10) Bulk and Coating Characterization Coated LWTs will be tested in the vacuum chamber to determine the work function in addition to optical tests mechanical tests traction and fatigue thermal cycling Atomic Oxygen and Ultraviolet radiation A bulk measurement will serve as a reference for the LWTs DK Test and Verification DeOrbit Kit test verification report Statement of compliance to the requirements verifiable by Test and Inspection Assessment for Industrial Production All processes and technologies used for the development of the C12A7e powder the pastes or slurries coating technologies as well as batch based and continuous furnace processes will be rated with respect to material performance scalability costs and industrial transferability aiming on the fabrication of long LWT components by continuous processes DK Target Requirements DeOrbit Kit Target Requirement document with justification Document includes functional performance operational and verification requirements LWT Mission Design Document describing the algorithms to make optimal mission design with LWTs In particular the algorithms provide the optimal tether geometry shape and dimensions It considers both deorbit and reboost missions and the corresponding figures of merit such as system mass deorbit time system efficiency tether cut probability etc The algorithms will be used to calculate the optimal performance of LWT in the two scenarios as a function of the physical properties of the LWT Model vs Experiment Validation Document with confrontations and discussions of the predictions provided by the theoretical models developed for the current exchange of LWTs with round and tape geometries and the experimental results obtained in the vacuum chamber DM Baseline Design The report illustrates the results of the tradeoff analysis among different mechanical solutions the preliminary definition of requirements and presents the deployment mechanism baseline concept Powder Synthesis and First paste Two synthesis routes for the C12A7-base material (solid state reaction and glass ceramic route, both including doping for enhanced photoelectron emission) and a thermal treatment for the transformation into the electrid C12A7:e- will be developed in order to provide a processable powder quality. Sintered hollow cathodes made of C12A7:e powder will be manufactured and available for characterization of photoelectron behavior (TUD) as well as for the development and qualification of suitable adhesive brazing pastes. First composite pastes based on C12A7:e- powder and brazing alloy powders will be available and characterized ready for coating experiments on metal foils on LWT by screen printing processes (20x20mm2). LWT Performance and Applications The document describes the performance of optimallydesigned LWTs in deorbit and reboost mission in Low Earth Orbit and also in other interesting enviroment such as Jupiters magnetosphere For the dynamics it considers rigid and flexible tether models thus including possible instabilities and control strategies for mitigation LWT Model and Target Requirements Document with a detailed description of the LWT/plasma model for round and tape tether geometries. Precise list of the target requirements, i.e. the optical, mechanical and thermal properties that the LWT should satisfy to meet the performance in deorbit and re-boost missions. Websites, patent fillings, videos etc. (1) Project Website Public website with information about the space debris problem, the tether solution and the goals of E.T.PACK. It also includes information about the partners and their roles in the development of the deorbit kit. The website will be updated periodically with the publications list, presentations in international conferences, and main results, including simulation data. Open Research Data Pilot (1) Data Management Plan Management plan of the data that will be generated in E.T.PACK. It will be mainly focussed on the numerical data generated on emissive Langmuir probes and its application in flight simulator of low work function tethers. Publications Peer reviewed articles (24) Key design and operation factors for high performance of C12A7:e- based cathodes Author(s): A. Post, J.F. Plaza, J. Toledo, D. Zschätzsch, M. Reitemeyer, L. Chen, A. Gurciullo, A. Siegel, P. J. Klar, P. Lascombes and B. Seifert Published in: IOP Conf. Series: Materials Science and Engineering, 2022, ISSN 1757-8981 Publisher: IOP Publication DOI: 10.1088/1757-899x/1226/1/012092 Design of a hollow cathode thruster: concepts, parameter study and initial test results Author(s): Norman Gondol, Martin Tajmar Published in: CEAS Space Journal, 2021, ISSN 1868-2502 Publisher: Springer Verlag DOI: 10.1007/s12567-021-00369-1 Improved Thermal and Mechanical Properties of [Ca <sub>24</sub> Al <sub>28</sub> O <sub>64</sub> ] <sup>4+</sup> (4e <sup>−</sup> ) Electride Ceramic by Adding Mo Metal Author(s): Katja Waetzig; Jochen Schilm; Christian Drobny; Martin Tajmar Published in: Advanced Engineering Materials, Issue 10, 2023, ISSN 1527-2648 Publisher: Wiley DOI: 10.1002/adem.202201286 Electronic, mechanical, and thermal properties of [Ca 24 Al 28 O 64 ] 4+ (4e − ) electride ceramic Author(s): Katja Waetzig, Jochen Schilm Published in: International Journal of Ceramic Engineering & Science, 2021, ISSN 2578-3270 Publisher: Wiley Periodicals LLC DOI: 10.1002/ces2.10098 Cross-verification and benchmarking analysis of electrodynamic tether simulators Author(s): Gabriel Borderes-Mottaa, Gabriel de Haro-Pizarrosoa, Gangqiang Li, Hanze Yu, Zheng H. Zhu, Giulia Sarego, Giacomo Colombatti, Enrico C. Lorenzini, Jesse K. McTernan, Brian E. Gilchrist, Sven G. Bilen, Satomi Kawamoto, Yasushi Ohkawa, Gonzalo S´anchez-Arriaga Published in: Acta Astronautica, 2023, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2023.04.015 A bare-photovoltaic tether for consumable-less and autonomous space propulsion and power generation Author(s): M. Tajmar, G. Sánchez-Arriaga Published in: Acta Astronautica, Issue 180, 2021, Page(s) 350-360, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2020.12.053 Deployment requirements for deorbiting electrodynamic tether technology Author(s): Sarego, G.; Olivieri, L.; Valmorbida, A.; Brunello, A.; Lorenzini, E. C.; Tarabini Castellani, L.; Urgoiti, E.; Ortega, A.; Borderes-Motta, G.; Sánchez-Arriaga, G. Published in: CEAS Space Journal, Issue 1, 2021, ISSN 1868-2502 Publisher: Springer Verlag DOI: 10.1007/s12567-021-00349-5 Test of Tethered Deorbiting of Space Debris Author(s): Lorenzo Olivieri, Andrea Valmorbida, Giulia Sarego, Enrico Lungavia, Davide Vertuani & Enrico C. Lorenzini Published in: Advances in Astronautics Science and Technology, 2020, ISSN 2524-5260 Publisher: Springer DOI: 10.1007/s42423-020-00068-9 Low work-function tether Deorbit Kit Author(s): L. Tarabini Castellani, A. Ortega, A. Giménez, E. Urgoiti, G. Sánchez-Arriaga, G. Borderes-Motta, E.C. Lorenzini, M. Tajmar, K. Wätzig, A. Post, J.F. Plaza Published in: Journal of Space Safety Engineering, 2020, ISSN 2468-8967 Publisher: Elsevier DOI: 10.1016/j.jsse.2020.07.001 Development and testing of a low-current applied-field magnetoplasmadynamic thruster with a rectangular discharge channel, Author(s): N Gondol and M. Tajmar Published in: Journal of Electric Propulsion, 2022, ISSN 2731-4596 Publisher: Springer DOI: 10.1007/s44205-022-00025-8 Kinetic analysis of the plasma sheath around an electron-emitting object with elliptic cross section Author(s): Luca Chiabó, Sadaf Shahsavani, Gonzalo Sánchez-Arriaga Published in: Physical Review E, Issue 104/5, 2021, ISSN 2470-0045 Publisher: American Physical Society DOI: 10.1103/physreve.104.055204 An in-line damper for tethers-in-space oscillations dissipation Author(s): L. Olivieri, A. Brunello, G. Sarego, A. Valmorbida, E.C. Lorenzini Published in: Acta Astronautica, Issue 189, 2021, Page(s) 559-566, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2021.09.012 Electrical model and optimal design scheme for low work-function tethers in thrust mode Author(s): G. Sánchez-Arriaga, J.R. Sanmartín Published in: Aerospace Science and Technology, Issue 96, 2020, Page(s) 105519, ISSN 1270-9638 Publisher: Elsevier BV DOI: 10.1016/j.ast.2019.105519 Ionospheric Experiment with a Low Work Function Tether Loop Author(s): G. Sanchez-Arriaga, S. Naghdi Published in: Journal of Guidance, Control, and Dynamics, Issue 43/2, 2020, Page(s) 212-221, ISSN 1533-3884 Publisher: AMER INST AERONAUTICS ASTRONAUTICS, DOI: 10.2514/1.g004746 Contacting Methods for C12A7 Electride Ceramic Author(s): Wätzig, Katja; Rost, Axel; Schilm, Jochen; Tajmar, M.; Michaelis, Alexander Published in: Journal of Ceramic Science and Technology, Issue 1, 2019, ISSN 2190-9385 Publisher: Goeller Verlag GmbH DOI: 10.4416/JCST2019-00032 Experimental investigation of electric propulsion systems using C12A7 electride hollow cathodes Author(s): N. Gondol and M. Tajmar Published in: CEAS Space Journal, 2022, ISSN 1868-2510 Publisher: Springer DOI: 10.1007/s12567-022-00446-z Parametrization of current–voltage characteristics and operation domains of cylindrical emissive probes in collisionless Maxwellian plasmas at rest Author(s): S Shahsavani, X Chen, G Sanchez-Arriaga Published in: Plasma Physics and Controlled Fusion, Issue 63/11, 2021, Page(s) 115018, ISSN 0741-3335 Publisher: Institute of Physics Publishing DOI: 10.1088/1361-6587/ac2559 Deorbit kit demonstration mission Author(s): L. Tarabini Castellani, S. García González, A. Ortega, S. Madrid, E.C. Lorenzini, L. Olivieri, G. Sarego, A. Brunello, A. Valmorbida, M. Tajmar, C. Drobny, J-P. Wulfkuehler, R. Nerger, K. Wätzig, S. Shahsavani and G. Sánchez-Arriaga. Published in: Journal of Space Safety Engineering, 2022, ISSN 2468-8967 Publisher: ELSEVIER DOI: 10.1016/j.jsse.2022.01.004 The E.T.PACK project: Towards a fully passive and consumable-less deorbit kit based on low-work-function tether technology Author(s): G. Sánchez-Arriaga, S. Naghdi, K. Wätzig, J. Schilm, E.C. Lorenzini, M. Tajmar, E. Urgoiti, L. Tarabini Castellani, J.F. Plaza, A. Post Published in: Acta Astronautica, 2020, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2020.03.036 A volume-averaged plasma model for heaterless C12A7 electride hollow cathodes Author(s): N. Gondol and M. Tajmar Published in: CEAS Space Journal, 2022, ISSN 1868-2510 Publisher: Springer DOI: 10.1007/s12567-022-00449-w Limitations of stationary Vlasov-Poisson solvers in probe theory Author(s): L. Chiabó, G. Sánchez-Arriaga Published in: Journal of Computational Physics, Issue 438, 2021, Page(s) 110366, ISSN 0021-9991 Publisher: Academic Press DOI: 10.1016/j.jcp.2021.110366 Validation of enabling technologies for deorbiting devices based on electrodynamic tethers Author(s): A. Valmorbida, L. Olivieri, A. Brunello, G. Sarego, G. Sánchez-Arriaga,E.C. Lorenzini Published in: Acta Astronautica, 2022, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2022.06.013 Attitude determination and control for the deployment preparation phase of a space tether mission Author(s): S. Garcia-Gonzalez and G. Sanchez-Arriaga Published in: Acta Astronautica, 2022, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2022.01.011 A code for the analysis of missions with electrodynamic tethers Author(s): G. Sánchez-Arriaga, G. Borderes-Motta, L. Chiabó Published in: Acta Astronautica, 2022, ISSN 0094-5765 Publisher: Pergamon Press Ltd. DOI: 10.1016/j.actaastro.2022.06.021 Conference proceedings (5) EXPERIMENTAL VALIDATION OF A DEPLOYMENT MECHANISM FOR TAPE-TETHERED SATELLITES Author(s): ANDREA VALMORBIDA; Lorenzo Olivieri; Giulia Sarego; Brunello, Alice; Vertuani, Davide; Carlo BETTANINI FECIA DI COSSATO; MARCO PERTILE; ENRICO LORENZINI Published in: Università degli Studi di Padova - IRIS, Issue 4, 2021 Publisher: IEEE Space tethers: parameters reconstructions and tests Author(s): Brunello, Alice; Lorenzo Olivieri; Giulia Sarego; ANDREA VALMORBIDA; Enrico, Lungavia; ENRICO LORENZINI Published in: Università degli Studi di Padova - IRIS, Issue 1, 2021 Publisher: IEEE STATUS OF DEVELOPMENT OF A DEORBIT DEVICE BASED ON ELECTRODYNAMIC TETHER TECHNOLOGY IN THE E.T.PACK PROJECT Author(s): G. Sánchez-Arriaga, L. Tarabini Castellani, E. C. Lorenzini, M. Tajmar, K. Wätzig, and A. Post Published in: 8th European Conference on Space Debris,, 2021 Publisher: ESA/ESOC Development roadmap of a deorbit kit based on electrodynamic tether technology Author(s): Tarabini-Castellani, Lorenzo; Ortega, Asier; Garcia, Sergio; Madrid, Salvador; Sanchez-Arriaga, Gonzalo; Lorenzini, Enrico C.; Olivieri, Lorenzo; Sarego, Giulia; Valmorbida, Andrea; Tajmar, Martin; Drobny, Christian; Wulfkühler, Jan-Philipp; Wätzig, Katja Published in: 71st International Astronautical Congress, IAC 2020, Issue 1, 2020 Publisher: International Astronautical Federation -IAF- Development roadmap of a deorbit kit based on electrodynamic tether technology Author(s): Tarabini-Castellani, Lorenzo; Ortega, Asier; Garcia, Sergio; Madrid, Salvador; Sanchez-Arriaga, Gonzalo; Lorenzini, Enrico C.; Olivieri, Lorenzo; Sarego, Giulia; Valmorbida, Andrea; Tajmar, Martin; Drobny, Christian; Wulfkühler, Jan-Philipp; Wätzig, Katja Published in: 71st International Astronautical Congress, IAC 2020, Issue 1, 2020 Publisher: International Astronautical Federation -IAF- Thesis dissertations (1) Modeling and mission analysis of Low Work Function tether Author(s): Shahsavani, Sadaf Published in: Issue 3, 2022 Publisher: Universidad Carlos III de Madrid Monographic books (1) Book of Abstracts of The Sixth International Conference on Tethers in Space Author(s): Malerba, Franco; Bekey, Ivan; González del Amo, José; Lu, Hongshi; Li, Ai-jun; Changqing, Wang; Ledkov, Alexander; Ohkawa, Yasushi; Zhu, Zheng H. (George); Vasiliev, V.V.; Alpatov, A.P.; Burkhardt, Zachary; Gilchrist, Brian; Wei, Yuanyuan; Wang, Changqing; Iakubivskyi, Iaroslav; Santangelo, Andrew; Sun, Xin; Yang, Keying; Sánchez Arriaga, Gonzalo; Kojima, Hirohisa; García-Pelayo, Ricardo; Bomb Published in: Issue 1, 2019 Publisher: Universidad Carlos III de Madrid Searching for OpenAIRE data... There was an error trying to search data from OpenAIRE No results available
