Missione ESA-JAXA BepiColombo. Partecipazione Italiana: Progetti e Opportunità. Stefano Orsini (INAF-IAPS)

ESA UNCLASSIFIED – For Internal Use

Missione ESA-JAXA

BepiColombo

Partecipazione Italiana:

Progetti e Opportunità

Stefano Orsini (INAF-IAPS)

SAIt - Società Astronomica Italiana57

°

MMO

MPO



MPO Flight Model mechanical and propulsion bus delivered



MPO vacuum bake-out completed



Flight model harness for MPO delivered and ready for integration



MTM Flight Model mechanical and propulsion bus in integration

MPO FM and MTM STM MPO FM at Phenix facility MPO FM harness

Spacecraft Status



MTM STM: mass properties test and thermal balance test at 10 Solar

Constants completed.



System functional tests on Spacecraft Engineering Test Bench

continuing with delivery and integration of the MMO Electrical Model



Payload FM delivery: mid-2013 – beginning 2014.



Delta-CDR: September 2013.

LAUNCH: MID-2016 (TBC)

ETB at Friedrichshafen

Spacecraft Status 2

PI E. Flamini @ ASI

G. Cremonese @ INAF-OAPd V. Da Deppo @ CNR-IFN UOS

G. Naletto @ UniPd CISAS M.T. Capria @ INAF-IAPS P. Palumbo @ Uniparthenope

E. Mazzotta Epifani @ INAF-OAC F. Capaccioni @ INAF-IAPS M.C. De Sanctis @ INAF-IAPS

G. Piccioni @ INAF-IAPS G. Filacchione @ INAF-IAPS

S. Debei @ UniPd CISAS E. Lorenzini @ UniPd CISAS M. Zaccariotto @ UniPd CISAS

C. Bettanini @ UniPd CISAS A. Francesconi @ UniPd CISAS

P. Nicolosi @ UniPd Dip.II M.G. Pelizzo @ CNR-IFN UOS V. Iafolla @ INAF-IAPS F. Santoli @ INAF-IAPS R. Peron @ INAF-IAPS D. Lucchesi @ INAF-IAPS E. Amata @ INAF-IAPS C. Federico @ UniPg M. Storini @ INAF-IAPS M. Laurenza @ INAF-IAPS

BC Italian scientific team

SIMBIO-Sys

Stereo Camera - STC High Res.Cam. - HRIC Vis-IR imag.spec.-VIHI TM & System ISA L. Iess @ UniRoma P. Tortora @ UniBO A. Milani @ UniPI MORE S. Orsini @ INAF-IAPS A. Milillo @ INAF-IAPS E. De Angelis @ INAF-IAPS A. Mura @ INAF-IAPS S. Selci @ CNR-ISC R. Leoni @ CNR-IFN SERENA PHEBUS MIXS MEA SIXS

ASI science management

SIMBIO-SYS

(PI: Enrico. Flamini, ASI)

The SIMBIO-SYS (

S

pectrometer and

I

magers for

M

PO

B

epiColombo –

I

ntegrated

O

bservatory

SYS

tem) instrument architecture is based on 3

different optical channels sharing a common Main Electronics and PDU.

HRIC

Local mapping at high resolution with colour capabilities.

Spatial resolution 5-10 m/pixel @ periherm Filters: pan, 550, 750, 880 nm.

STC

Global stereo mapping and DTM reconstruction.

Spatial resolution 50 m/pixel @ periherm Filters: pan, 420, 550, 750, 920 nm.

VIHI

Global mineralogical mapping;

Spatial resolution 100 m/pixel @ periherm Spectral coverage 0.4-2.0 µm with 6.25nm resolution

SIMBIO-SYS Package

Co-PI Gabriele Cremonese

Co-PI Pasquale Palumbo

Co-PI Fabrizio Capaccioni

Co-PI Yves Langevin

Calibration at package level

Co-PI Alain Doressoundiram

FPA procurement & Calibration

TM Stefano Debei

Thermal and structural design

Scientific Req. Implementation

INDUSTRY SELEX GALILEO

IAS

Stereo Channel(STC)

1. Global mapping in stereo mode at spatial resolution of < 110 m, max resolution of 50 m per pixel at the periherm (400 km)

2. Mapping in four colours at spatial resolution of < 110 m Science goal: Digital Elevation Model of Mercury Surface

IAS

orsa y

High Resolution Imaging Channel (HRIC)

Science goal Acquisition conditions Expected resolution Coordination with Geomorphology characterization of selected areas 400 < h < 690 km Periside Phase angle < 90° 5 – 8 m STC VIHI BELA Mineralogy mapping at small scales 400 < h < 545 km Periside Phase angle < 50° 10 – 15 m STC VIHI

Targeting

operation

mode

on selected

interesting

areas

IAS

orsa y

M

ORE

• The Mercury Orbiter Radio-science Experiment (MORE) addresses the mission scientific goals in geodesy, geophysics and fundamental physics. It will:

• Provide crucial experimental constrains to models of the planet’s internal structure, determine the size of the inner and outer core, the thickness of the mantle and the crust.

• Test theories of gravity with unprecedented accuracy

• Test the novel tracking system in precise orbit determination and space navigation

Scientific Goals

Gravity

Rotation

Relativity

Harmonic

coefficients up to degree 25

Moment of inertia of the planet and its mantle

Post-Newtonian parameters Love number k₂ Rotational state of

the planet

Solar gravitational oblateness ( J₂)

On board instrumentation

•

High gain antenna

(diameter = 1 m)

•

Two trasponders

:

-

X/X/Ka Deep Space Transponder (

DST

)

-

Ka/Ka Deep Space Transponder (

KaT

)

X Ka X Ka

 Range rate: ≈ 3 μm/s accuracy @1000 s (two way)

 Range: 20 cm accuracy (two way) End to end Allan deviation:

A system-level experiment

High precision

data

Accurate orbit

determination

Experiment

goals

Ka Transponder

measurements

TT&C subsystem:

-High gain antenna (HGA) - RF network

-X/X/Ka Deep Space Transponder (DST)

X/X and X/Ka link for Doppler and ranging measurements

ISA tri-axial accelerometer Precise measurements of non-_{gravitational acceleration} Ground station equipment

and ancillary data

Simultaneous tracking of the spacecraft by the X/X, X/Ka and

Ka/Ka frequency links and calibration of the tropospheric

effects

AOCS subsystem

High resolution camera

(SIMBIO-SYS)

Laser altimeter (BELA)

Determination of Mercury’s rotational state

Geodesy experiment

Participating Institutions in Italy:

Sapienza Università di Roma Università di Pisa

ISA

(

Italian Spring Accelerometer

) (P.I.: V. Iafolla, IAPS-INAF) is part of the

BepiColombo suite of instruments dedicated to

RSE

(

Radio Science Experiments

)

By measuring the non-gravitational perturbations acting on the MPO

spacecraft, it will enable an accurate reconstruction of its gravitational orbit around

Mercury, in order to:

• Constrain the internal structure of the planet (measurement of global gravity field

and of its temporal variations due to solar tides, local gravity anomalies, rotation

state)

• Test Einstein General Relativity theory (improved determination of PNP)

parameters)

A/D converter saturation 3000108 _m/s2

The instrument is an ensemble of three one-axis sensors arranged in

such a way to measure the acceleration vector acting on it

Courtesy TAS-I

ISA will be the

first

among such type of instruments to fly on an interplanetary mission

Decennal experience of the

Experimental Gravitation Group

(IAPS-INAF) in:

• Measurement of small forces

• Fundamental physics tests

• Geophysical instrumentation

Courtesy TAS-I

Courtesy TAS-I

Given its high sensitivity, the

instrument pushes the requirements on the spacecraft in terms of

dynamical environment (mechanical and thermal noise)

In practice, its proof masses will constitute a virtual test mass freely falling in the

SERENA

Search for Exospheric Refilling

and Emitted Natural Abundances

Neutral and Ionized Particle Detectors for Hermean Environment Investigations

S. Orsini (PI), S. Livi (CoPI-STROFIO), K. Torkar (CoPI-PICAM), S. Barabash (CoPI-MIPA)

A. Milillo (PI Dep., Sci. Coord.), P. Wurz (Sci. Coord.), A. Olivieri (ASI PM), E. Kallio (SGS),

and the SERENA TEAM

ELENA: Emitted Low Energy Neutral Atoms

Neutral particle emission form Mercury’s surface

STROFIO:

Exososphere Mass Spectrometer

Exospheric density and composition

PICAM

:

Planetary Ion CAMera

Planetary ions composition and distribution

MIPA

:

Miniature Ion Precipitation Analyzer

Solar wind ion precipitation

SERENA

Search for Exospheric Refilling

and Emitted Natural Abundances

Neutral and Ionized Particle Detectors for Hermean Environment Investigations

S. Orsini (PI), S. Livi (CoPI-STROFIO), K. Torkar (CoPI-PICAM), S. Barabash (CoPI-MIPA)

A. Milillo (PI Dep., Sci. Coord.), P. Wurz (Sci. Coord.), A. Olivieri (ASI PM), E. Kallio (SGS),

and the SERENA TEAM

ELENA: Emitted Low Energy Neutral Atoms

Neutral particle emission form Mercury’s surface

STROFIO:

Exososphere Mass Spectrometer

Exospheric density and composition

PICAM

:

Planetary Ion CAMera

Planetary ions composition and distribution

MIPA

:

Miniature Ion Precipitation Analyzer

Solar wind ion precipitation

INDUSTRY: OHB-CGS (Milano) & AMDL (Roma)

PICAM

MIPA

ELENA

Soft X-ray shuttering @43kHz

Ion beam_1keV shuttering @43kHz

ELENA is a Time-of-Flight (ToF) sensor, based on the state-of-the art of ultra-sonic oscillating shutter (operated at frequencies of the order of tens of kHz), mechanical gratings and Micro-Channel Plate (MCP) detectors.

The purpose of the shuttering system is to digitize space and time when tagging the incoming particles without introducing “disturbing” detector elements, which may affect the particle’s trajectory or the energy. This is particularly important in this case, in which neutrals of energies of a few tens of eVs must be detected.

Parameter

Required

Actual

Energy range

<0.02 – 5 keV

<0.01–5keV(mass dependent)

Velocity resolution



v

/

v

10%

Down to 10%

Viewing angle

5

_x70

_4.5

_x76

Angular resolution

5

_x5

_4.5

_x4.5

_(actual)

4.5°x2.4° (nominal pixel)

Mass resolution

M

/



M

H and heavy species

H and heavy species

Optimal temporal resolution

<5 m

40 s

Geometric factor G



10

_cm

_sr

_{3.5 10}

_cm

_sr

BepiColombo

BC will allow us a step ahead in our understanding

of Mercury and will be the base of our studies for

many years.

Huge Italian community is involved in the effort,

covering many of the technical and scientific fields

of this mission: from this point of view, BC is

certainly an Italy-lead ESA mission.

Next steps: payload FM delivery, system delta-CDR

(September 2013), launch by mid-2016 (or earlier,

TBD)