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The Hera Saturn entry probe mission

O. Mousis 1 D.H. Atkinson 2 T. Spilker 3 E. Venkatapathy 4 J. Poncy 5 R. Frampton 6 Jean-Pierre Lebreton 7 A. Coustenis 8 K. Reh 3 L.N. Fletcher 9 R. Hueso 10 M.J. Amato 11 A. Colaprete 4 F. Ferri 12 D. Stam 13 P. Wurz 14 S. Atreya 15 S. Aslam 11 D.J. Banfield 16 S. Calcutt 17 G. Fischer 18 A. Holland 19 C. Keller 20 E. Kessler 21 M. Leese 22 P. Levacher 1 A. Morse 19 O. Muñoz 23 Jean-Baptiste Renard 7 S. Sheridan 19 F.-X. Schmider 24 F. Snik 20 J.H. Waite 25 M. Bird 26 T. Cavalié 27 M. Deleuil 1 J. Fortney 28 D. Gautier 8 T. Guillot 24 J.I. Lunine 29 B. Marty 1 C. Nixon 11 G.S. Orton 3 A. Sánchez-Lavega 9
1 LAM - Laboratoire d'Astrophysique de Marseille
2 University of Idaho [Moscow, USA]
3 JPL - Jet Propulsion Laboratory
4 ARC - NASA Ames Research Center
5 Thales Alenia Space [Cannes]
6 The Boeing Company, Huntington Beach
7 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace
8 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
9 University of Leicester
10 Departamento de Fisica Aplicada [Bilbao]
11 GSFC - NASA Goddard Space Flight Center
12 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
13 Faculty of Aerospace Engineering [Delft]
14 Physikalisches Institut [Bern]
15 University of Michigan [Ann Arbor]
16 Cornell University
17 University of Oxford [Oxford]
18 IWF - Space Research Institute of Austrian Academy of Sciences
19 OU - The Open University [Milton Keynes]
20 Leiden Observatory [Leiden]
21 Leibniz-Institute of Photonic Technology
22 School of Physical Sciences [Milton Keynes]
23 IAA - Instituto de Astrofísica de Andalucía
24 LAGRANGE - Joseph Louis LAGRANGE
25 Space Science Division [San Antonio]
26 Rheinische Friedrich-Wilhelms-Universität Bonn
27 ASP 2016
LAB - Laboratoire d'Astrophysique de Bordeaux [Pessac]
28 UCSC - University of California [Santa Cruz]
29 Department of Astronomy [Ithaca]
Abstract : The Hera Saturn entry probe mission is proposed as an M-class mission led by ESA with a contribution from NASA. It consists of one atmospheric probe to be sent into the atmosphere of Saturn, and a Carrier-Relay spacecraft. In this concept, the Hera probe is composed of ESA and NASA elements, and the Carrier-Relay Spacecraft is delivered by ESA. The probe is powered by batteries, and the Carrier-Relay Spacecraft is powered by solar panels and batteries. We anticipate two major subsystems to be supplied by the United States, either by direct procurement by ESA or by contribution from NASA: the solar electric power system (including solar arrays and the power management and distribution system), and the probe entry system (including the thermal protection shield and aeroshell). Hera is designed to perform in situ measurements of the chemical and isotopic compositions as well as the dynamics of Saturn's atmosphere using a single probe, with the goal of improving our understanding of the origin, formation, and evolution of Saturn, the giant planets and their satellite systems, with extrapolation to extrasolar planets. Hera's aim is to probe well into the cloud-forming region of the troposphere, below the region accessible to remote sensing, to the locations where certain cosmogenically abundant species are expected to be well mixed. By leading to an improved understanding of the processes by which giant planets formed, including the composition and properties of the local solar nebula at the time and location of giant planet formation, Hera will extend the legacy of the Galileo and Cassini missions by further addressing the creation, formation, and chemical, dynamical, and thermal evolution of the giant planets, the entire solar system including Earth and the other terrestrial planets, and formation of other planetary systems.
Keywords : ESA's Cosmic Vision Medium class size call Probe Atmosphere In situ measurements Saturn
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INSU | LPC2E | OSUC | CNRS | UNICE | UNIV-ORLEANS | L3AB | OBSPM | OCA | OSU-INSTITUT-PYTHEAS | DSM-IRFU | LAM | CEA | LAGRANGE | UNIV-AMU | LESIA | UPMC | UNIV-COTEDAZUR | CEA-DRF | CEA-UPSAY | AMIDEX | SORBONNE-UNIVERSITE | UNIV-PARIS7 | USPC | SU-SCIENCES | UNIV-PARIS | UP-SCIENCES | PSL | SU-TI

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O. Mousis, D.H. Atkinson, T. Spilker, E. Venkatapathy, J. Poncy, et al.. The Hera Saturn entry probe mission. Planetary and Space Science, Elsevier, 2016, 130, pp.80-103. ⟨10.1016/j.pss.2015.06.020⟩. ⟨insu-01351010⟩

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