Odyssey: a solar system mission |
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Authors: | B Christophe P H Andersen J D Anderson S Asmar Ph Bério O Bertolami R Bingham F Bondu Ph Bouyer S Bremer J-M Courty H Dittus B Foulon P Gil U Johann J F Jordan B Kent C Lämmerzahl A Lévy G Métris O Olsen J Pàramos J D Prestage S V Progrebenko E Rasel A Rathke S Reynaud B Rievers E Samain T J Sumner S Theil P Touboul S Turyshev P Vrancken P Wolf N Yu |
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Institution: | 1. ONERA, BP 72, 92322, Chatillon Cedex, France 2. University of Oslo, FFI, Oslo, Norway 3. Global Aerospace, Los Angeles, USA 4. NASA, JPL, Pasadena, CA, USA 5. Observatoire de la C?te d’Azur/GEMINI, Grasse, France 6. Instituto Superior Técnico, Lisboa, Portugal 7. Rutherford Appleton Laboratory, Didcot, UK 8. Institut d’Optique Graduate School, Palaiseau, France 9. ZARM, University of Bremen, Bremen, Germany 10. Laboratoire Kastler Brossel, ENS, UPMC, CNRS, Paris, France 11. Astrium, Friedrichshafen, Germany 12. Joint Institute for VLBI in Europe, Dwingeloo, The Netherlands 13. Institute for Quantum Optics, Univ. Hannover, Hannover, Germany 14. Imperial College, London, UK 15. LNE-SYRTE, Observatoire de Paris, CNRS, UPMC, Paris, France
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Abstract: | The Solar System Odyssey mission uses modern-day high-precision experimental techniques to test the laws of fundamental physics
which determine dynamics in the solar system. It could lead to major discoveries by using demonstrated technologies and could
be flown within the Cosmic Vision time frame. The mission proposes to perform a set of precision gravitation experiments from
the vicinity of Earth to the outer Solar System. Its scientific objectives can be summarized as follows: (1) test of the gravity
force law in the Solar System up to and beyond the orbit of Saturn; (2) precise investigation of navigation anomalies at the
fly-bys; (3) measurement of Eddington’s parameter at occultations; (4) mapping of gravity field in the outer solar system
and study of the Kuiper belt. To this aim, the Odyssey mission is built up on a main spacecraft, designed to fly up to 13
AU, with the following components: (a) a high-precision accelerometer, with bias-rejection system, measuring the deviation
of the trajectory from the geodesics, that is also giving gravitational forces; (b) Ka-band transponders, as for Cassini,
for a precise range and Doppler measurement up to 13 AU, with additional VLBI equipment; (c) optional laser equipment, which
would allow one to improve the range and Doppler measurement, resulting in particular in an improved measurement (with respect
to Cassini) of the Eddington’s parameter. In this baseline concept, the main spacecraft is designed to operate beyond the
Saturn orbit, up to 13 AU. It experiences multiple planetary fly-bys at Earth, Mars or Venus, and Jupiter. The cruise and
fly-by phases allow the mission to achieve its baseline scientific objectives (1) to (3) in the above list]. In addition
to this baseline concept, the Odyssey mission proposes the release of the Enigma radio-beacon at Saturn, allowing one to extend
the deep space gravity test up to at least 50 AU, while achieving the scientific objective of a mapping of gravity field in
the outer Solar System (4) in the above list].
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Keywords: | Gravitation Relativity Celestial mechanics Occultations Kuiper belt |
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