Physics – Optics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004esasp.556e...6s&link_type=abstract
Proceedings of the 3rd European Workshop on Hydrazine (ESA SP-556). 9 June 2004, Chia Laguna (Cagliari), Sardinia, Italy. Editor
Physics
Optics
Scientific paper
The Kepler Program has embarked on a mission to detect terrestrial planets. A sensitive space-borne photometer is used to continuously and simultaneously monitor the brightness of a pre-determined set of stars. Reaction wheels are used to maintain constant, accurate pointing at the stars, and a reaction control system (RCS) is used to periodically de-saturate the reaction wheels. Because of the precise light detection requirements, it is essential to the success of the mission that the photometer optics remain contamination-free. In order to determine whether hydrazine propellant is an appropriate candidate for the Kepler RCS system, a Direct Simulation Monte Carlo analysis is performed to assess the potential for contamination of the Kepler photometer by hydrazine exhaust products, including unreacted hydrazine. The analysis concludes that there are no detrimental contamination effects on the Kepler photometer.
Matheson B.
Sholes B.
Zeller C.
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