Transcript The BepiColombo Mission Overview & Status by Johannes Benkhoff (HEWG/SERENA Meeting - 12.

The BepiColombo Mission
Overview & Status
by
Johannes Benkhoff (HEWG/SERENA Meeting - 12. May 2008)
May 2008
[email protected]
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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
May 2008
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BepiColombo (Cruise) Configuration
MTM
Mercury
Transfer
Module
MPO
Mercury
Planetary
Orbiter
Sunshield
MMO
Mercury
Magnetospheric
Orbiter
BepiColombo industrial contract signature
2008
[email protected]
PressMay
event,
Friedrichshafen,
18 January 2008
Mission Baseline
Note: currently under review !!
• Launch: August 2013 (2014 back-up)
M
Mercury
Orbits
• 6 year cruise to Mercury by electric
propulsion
• Earth, Venus, Mercury fly-by’s/gravity
assists
V
M
S
E
• Arrival at Mercury: August 2019
• Gravity capture into Mercury orbit /
Final Mercury orbit adjustment by
chemical propulsion
Cruise
• Injection of the MPO and MMO into
their respective orbits by chemical
propulsion
E
• Science operations: 1 year nominal
plus 1 year extended
m
NECP
May 2008
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BepiColombo at Mercury
MMO
e=0.66
9,2 h
MPO
2019
e = 0,16
2,3 hours
Messenger
2011
e=0,73
Coverage < 500 km:
HR chemistry (X, gamma/neutron)
HR Imagery, HR spectrometry
geodesy, altimetry
BepiColombo MPO: global
60° N,12 h
Data rates (average bit rate):
MMO : 3,5 kbits/s
MPO : 70 kbits/s
May 2008
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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
D(ln G)/dt
• Test of Einstein's theory of general relativity
J2 of the Sun
May 2008
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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
May 2008
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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
MMO
Interplanetary plasma and dust
May 2008
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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)
May 2008
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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)
May 2008
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Scientific Payload MPO
SERENA:
Elena, MIPA,
PICAM, Strofio
Search for Exospheric Refilling and Emitted
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)
May 2008
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MPO Payload Resources
Experiment
Mass
[kg]
Power (allocated)
[W]
Power (Orbit Average)
[W]
Power (max)
[W]
BELA
12
49
49
75
ISA
5.3
6
8
12
MPO/MAG
1.8
5
4.6
MERTIS
3.3
8
11
19.5
MIXS
7.3
12
18
34
MGNS
5.2
4
4
5
MORE
3.5
30
35
35
PHEBUS
6.6
4
SERENA
5.4
21
21
28
SIMBIO-SYS
8.3
23
23
34
SIXS
1.3
2
TOTAL
60
164
5.3
5.4
25
2.7
5.4
182
279
May 2008
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Scientific Payload MMO (23.6 kg, 48.5 W )
MGF
(2 sub-units)
Magnetic Field Investigation studies magnetic field from
the planet, magnetosphere, and interplanetary solar wind.
MPPE
(7 sub-units)
Mercury Plasma Particle Experiment studies plasma
& neutral particles from the planet, magnetosphere, and
interplanetary solar wind.
PWI
(7 sub-units)
Plasma Wave Investigation studies electric field,
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.
May 2008
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BC Ground Segment set-up: Science Phase
MPO
RSE PI
DSN
MPO PI
BCMOC
BCSOC
ESA Network
BCSGS
MMO
JAXA MOC
JAXA SOC
JAXA Network
MMO PI
May 2008
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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
May 2008
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…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
May 2008
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