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Electrodynamic Tether Technology for Passive Consumable-less Deorbit Kit


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.

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 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.

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.

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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
DOI: 10.1002/ces2.10098

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
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
DOI: 10.1007/s12567-021-00349-5

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
DOI: 10.1016/j.jsse.2020.07.001

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
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
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
DOI: 10.4416/JCST2019-00032

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
DOI: 10.1016/j.actaastro.2020.03.036

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
DOI: 10.1016/


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

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

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