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The BepiColombo Mission

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Presentation on theme: "The BepiColombo Mission"— Presentation transcript:

1 The BepiColombo Mission
Overview & Status by Johannes Benkhoff (HEWG/SERENA Meeting May 2008) 1 / 14

2 BepiColombo ESA – JAXA mission to explore Mercury named after Prof
BepiColombo ESA – JAXA mission to explore Mercury named after Prof. Giuseppe (Bepi) Colombo dual spacecraft mission: Mercury Planetary Orbiter (MPO) focus on surface and interior science built under ESA responsibility (~800kg) 11 science instruments/instrument suites MPO Mercury Magnetospheric Orbiter (MMO) focus on the planetary environment built under JAXA responsibility (~250kg) 5 instrument suites MMO illustrated by Alex Luktus

3 BepiColombo (Cruise) Configuration
MTM Mercury Transfer Module MPO Mercury Planetary Orbiter Sunshield MMO Mercury Magnetospheric Orbiter BepiColombo industrial contract signature Press event, Friedrichshafen, 18 January 2008

4 Mission Baseline Note: currently under review !!
Launch: August 2013 (2014 back-up) 6 year cruise to Mercury by electric propulsion Earth, Venus, Mercury fly-by’s/gravity assists Arrival at Mercury: August 2019 Gravity capture into Mercury orbit / Final Mercury orbit adjustment by chemical propulsion Injection of the MPO and MMO into their respective orbits by chemical propulsion Science operations: 1 year nominal plus 1 year extended

5 BepiColombo at Mercury
Coverage < 500 km: HR chemistry (X, gamma/neutron) HR Imagery, HR spectrometry geodesy, altimetry Messenger: 25% BepiColombo MPO: global MMO e=0.66 9,2 h MPO 2019 e = 0,16 2,3 hours Messenger 2011 e=0,73 60° N,12 h Data rates (average bit rate): Messenger : 900 bits/s MMO : 3,5 kbits/s MPO : 70 kbits/s

6 BepiColombo at Mercury
Coverage < 500 km: HR chemistry (X, gamma/neutron) HR Imagery, HR spectrometry geodesy, altimetry BepiColombo MPO: global MMO e=0.66 9,2 h MPO 2019 e = 0,16 2,3 hours Messenger 2011 e=0,73 60° N,12 h Data rates (average bit rate): MMO : 3,5 kbits/s MPO : 70 kbits/s

7 BepiColombo – Science Objectives
Origin and evolution of a planet close to its parent star Mercury as a planet - form, interior, structure, geology, composition and craters Mercury's exosphere composition and dynamics Mercury's magnetized envelope (magnetosphere): structure and dynamics Origin of Mercury's magnetic field Test of Einstein's theory of general relativity D(ln G)/dt J2 of the Sun

8 to fulfill the scientific objectives, one needs …
- comprehensive, highest resolution global coverage of the planet - thermal infrared images, to determine surface composition and create global temperature maps - high quality measurements of Mercury’s gravity field (planet interior, test of Einstein’s theory) - high-detail measurements of the plasma and particle environment - double-point measurements around the planet, to better understand the structure and dynamics of the environment around Mercury

9 Scientific themes Surface - topography, morphology, composition
Interior – state of the core, composition, magnetic field Exosphere – composition, dynamics, surface release Magnetosphere - structure, dynamics, composition MPO Internal magnetic field: - Structure and distribution, Origin and internal structure Magnetosphere - Structure, Kinetics, processes Atmosphere Structure, variations, production from surface, loss to solar wind Surface Crust - Present structure, status, evolution Interplanetary plasma and dust MMO

10 Scientific Payload MPO
SIXS Solar Intensity X-ray and particle spectrometer Monitor solar X-ray intensity and solar particles PI: Juhani Huovelin (Finland) SIMBIO-SYS: HIRC, STC, VIHI Spectrometers and Imagers for MPO High resolution and stereo imaging, Near-IR (<2.0μm) imaging spectroscopy for global mineralogical mapping PI: Enrico Flamini (Italy) BELA BepiColombo Laser Altimeter Topographic mapping PIs: Tilman Spohn (Germany) Nicolas Thomas (Switzerland) ISA Italian Spring Accelerometer Non–gravitational accelerations of the spacecraft PI: Valerio Iafolla (Italy)

11 Scientific Payload MPO
MIXS Mercury Imaging X-ray Spectrometer Elemental surface composition, global mapping and composition of surface features PI: George Fraser (United Kingdom) MPO/MAG Magnetic Field Investigation Detailed description of planetary magnetic field, its source and interaction with the solar wind PI: Karl-Heinz Glassmeier (Germany) MGNS Mercury Gamma-Ray and Neutron Spectrometer Elemental surface and sub-surface composition, volatile deposits on polar areas PI: Igor Mitrofanov (Russia) MORE Mercury Orbiter Radio Science Experiment Core and mantle structure, Mercury orbit, fundamental science, gravity field PI: Luciano Iess (Italy)

12 Scientific Payload MPO
SERENA: Elena, MIPA, Search for Exospheric Refilling and Emitted PICAM, Strofio Natural Abundances In-situ study of composition, vertical structure and source and sink processes of the exosphere PI: Stefano Orsini ( Italy) PHEBUS Probing of Hermean Exosphere by Ultraviolet Spectroscopy UV spectral mapping of the exosphere PI: Eric Chassefière ( France) MERTIS Mercury Radiometer and Thermal Imaging Spectrometer Global mineralogical mapping (7-14 µm), surface temperatures and thermal inertia PI: Harald Hiesinger ( Germany)

13 MPO Payload Resources Experiment Mass [kg] Power (allocated) [W]
Power (Orbit Average) Power (max) BELA 12 49 75 ISA 5.3 6 8 MPO/MAG 1.8 5 4.6 MERTIS 3.3 11 19.5 MIXS 7.3 18 34 MGNS 5.2 4 MORE 3.5 30 35 PHEBUS 6.6 5.4 25 SERENA 21 28 SIMBIO-SYS 8.3 23 SIXS 1.3 2 2.7 TOTAL 60 164 182 279

14 Scientific Payload MMO (23.6 kg, 48.5 W )
MGF Magnetic Field Investigation studies magnetic field from (2 sub-units) the planet, magnetosphere, and interplanetary solar wind. MPPE Mercury Plasma Particle Experiment studies plasma (7 sub-units) & neutral particles from the planet, magnetosphere, and interplanetary solar wind. PWI Plasma Wave Investigation studies electric field, (7 sub-units) electromagnetic waves, and radio waves from magnetosphere and solar wind. MSASI Mercury Sodium Atmosphere Spectral Imager studies the thin sodium atmosphere. MDM Mercury Dust Monitor studies dust from the planet and interplanetary & interstellar space.

15 BC Ground Segment set-up: Science Phase

16 Status: Payload is in a reasonable good shape / Instrument Preliminary Design reviews ongoing Spacecraft activities in 2008 focused on procurement and build-up of complete industrial team, in preparation for System Preliminary Design Review (PDR). Significant dry mass growth of the whole system (MTM, MPO, MMO, and MOSIF Sunshield) forced the Project to setup a “Tiger Team” to consolidate the system design and to review the mission baseline. System PDR will be held at the end of 2008

17 …BepiColombo will contribute to a better understanding of the evolution of the innermost, least known planet Mercury and of the evolution of our Solar System

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