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Electrodynamic Tether Technology for Passive Consumable-less Deorbit Kit

Deliverables

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 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

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 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.

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.

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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Publications

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

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

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, 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, 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

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, 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, 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, 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, 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, 1, 2019, ISSN 2190-9385
Publisher: Goeller Verlag GmbH
DOI: 10.4416/JCST2019-00032

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, 63/11, 2021, Page(s) 115018, ISSN 0741-3335
Publisher: Institute of Physics Publishing
DOI: 10.1088/1361-6587/ac2559

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

Limitations of stationary Vlasov-Poisson solvers in probe theory

Author(s): L. Chiabó, G. Sánchez-Arriaga
Published in: Journal of Computational Physics, 438, 2021, Page(s) 110366, ISSN 0021-9991
Publisher: Academic Press
DOI: 10.1016/j.jcp.2021.110366

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, 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, 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, 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, 1, 2020
Publisher: International Astronautical Federation -IAF-

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: 1, 2019
Publisher: Universidad Carlos III de Madrid