Computer Science – Performance
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.555e..84p&link_type=abstract
Proceedings of the 4th International Spacecraft Propulsion Conference (ESA SP-555). 2-9 June, 2004, Chia Laguna (Cagliari), Sard
Computer Science
Performance
Scientific paper
Darwin is an infrared space interferometer with the explicit purpose of detecting other Earth-like worlds, analyze their characteristics and determine their capability to sustain life as we know it. This scientific mission may benefit of the excellent electrical efficiency and accurate thrust control capability of FEEP thrusters for drag free control and formation flying. However the performance of DARWIN space interferometer is influenced by any background signal that does not come from the detected planet like, for example, the noise introduced by thermal emission of the optical elements. Numerical solutions have shown that this noise becomes negligible when the optical elements are cooled to around 40 K. Because of this thermal constraint the thermal design of the spacecraft becomes a key factor to satisfy the mission target. This paper presents a possible thruster configuration and the relative thermal design that allows FEEP thrusters meeting the thermal requirements of the telescope free- flyers.
Gonzalez del Amo J.
Pizzagalli V.
Ponti F.
Stramaccioni D.
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