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The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

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The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere
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Page 1: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

The Solar Orbiter A high-resolution mission to the Sun

and inner heliosphere

Page 2: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

Concept général de la mission

1. Obtenir des résolution spatiales en imagerie 5 fois meilleures qu’auparavant (au périhélie).

1. Observations in-situ de l’Héliosphère interne d’aussi près que 45 rayons solaires (0.21 UA).

1. Observer pour le première fois la surface du soleil ainsi que la couronne à partir d’un point en quasi-corotation avec le soleil.

1. Obtenir des images des régions polaires du Soleil jusqu’à des latitudes de 38° (en fin de mission).

1. Mesures simultanées in-situ et à distance.

Page 3: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

1 AU

0.2-0.3 AU (S. Orb.)

3 RS

extrapolation à partir de l’événement du 03/06/82

N. Vilmer

Mesure du flux de neutrons de basse énergie

Page 4: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.
Page 5: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

observation mode

data-dump mode

Page 6: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

Les différentes activités à l’ESA:

• « Assessment Study Report » (J.-L. Bougeret, J.-C. Vial) Juillet 2000.

• Payload Working Groups (N. Vilmer, A. Gabriel, M.

Maksimovic) , version finale en prépa.

• ESTEC « Integrated Science & Payload study », dont une étude industrielle par EADS-Astrium, prés. finale le 29 juin 2004

• « Science Definition Team » (A. Gabriel, L. Klein), version de Déc. 2003, rapport final ?

Page 7: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

At the SPC meeting 8 June 2004 :“Solar Orbiter reconfirmed as integral part of Cosmic Vision 2003 – 2013 with a target launch in

Oct 2013 (and no later than May 2015).

The SPC stressed the importance of maintaining a close technological synergy between Solar Orbiter

and Bepi Colombo.”

Réunion du 29 juin 2004 à l’ESTEC

Page 8: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

Conclusions de l’Etude EADS-Astrium

• Study demonstrates that 150 kg payload can be achieved– Pending size reduction of remote sensing instruments and key effect on mass & thermal– Thanks to relaxation of resolution to 150 km @ 0.21 AU– Size reduction and mass containment pave the way for the shortest cruise «ESA Flexible» mission

• The main system issue is the management of the data volume– Manageable at spacecraft level– Critical at system level due to space to ground telemetry bottleneck

• Study allows to clearly highlight and recommend– Instruments interfaces for accommodation on spacecraft– Instruments issues resulting from overall system environment

• Study should be seen as a way – To get a common understanding ESA/science team/industry of

• Instruments requirements • Mission, environment constraints

– To better prepare spacecraft and system design• Avoid overdesign• Issue required level of interface information

Page 9: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

Recommandations du « Science Definition Team »

Page 10: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.
Page 11: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

4ième version du « Payload definition Document » (15 avril 2005)

Page 12: The Solar Orbiter A high-resolution mission to the Sun and inner heliosphere.

En résumé: il n’y a pas de « point de blocage » pour la mission


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