BETsMA v2.0: A friendly software for the analysis of electrodynamic tether missions in Jupiter

Abstract

<p><strong>1. Introduction</strong></p> <p>Space Electrodynamic Tethers (EDTs) are km-long conductors that exchange momentum and energy with a planet magnetosphere through the Lorentz force exerted by the planet's magnetic field on the tether current. Since the conducting medium (plasma) and the magnetic field of the planetary environment are essential for their operation, tether are appropriate for applications in Low Earth Orbits (LEO) and the neighborhood of giant planets like Jupiter [1, 2, 3, 4], Saturn [5], and Neptune [6]. However, the design and analysis of missions in outer planets typically requires deep knowledge on tethers modeling. The main goal of this work is spreading the use of tethers and presenting a friendly software for the mission analysis and simulation of tethers in Jupiter.</p> <p><strong>2. The software BETsMA</strong></p> <p>BETsMA is a software for the preliminary design and analysis of missions using EDTs [7]. The code was initially developed under the FP7 Space Project with acronym <em>BETs</em> (262972, European Commission). It was focussed on the analysis of deorbiting mission in LEO by bare EDTs equipped with active electron emitters [8]. After the end of the project in 2014, the original software was improved into several directions. However, it has been in the last year when the works were intensified and a second version, i.e. BETsMA v2.0, has been  developed thanks to the H2020 FET-OPEN project with acronym <em>E.T.PACK</em> (828902, European Commission) [9]. BETsMA v2.0 does not only simulate deorbit maneuvers considering bare electrodynamic tethers, but also low work function tethers [10, 11], which do not requires active emitters. These two  types of tethers are handled by the software in both passive (power generation) and active [12, 13] modes. Such a capability allows to analyze the performance of EDTs in a broad range of scenarios and looking for different missions goals like thrust and power generation. BETsMA v2 also includes a web interface [9] that allows to prepare and submit simulations in an easy and friendly manner (see Fig. 1).</p> <p><img src="data:image/png;base64, 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