The MESSENGER Spacecraft |
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Authors: | James C Leary Richard F Conde George Dakermanji Carl S Engelbrecht Carl J Ercol Karl B Fielhauer David G Grant Theodore J Hartka Tracy A Hill Stephen E Jaskulek Mary A Mirantes Larry E Mosher Michael V Paul David F Persons Elliot H Rodberg Dipak K Srinivasan Robin M Vaughan Samuel R Wiley |
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Institution: | (1) Space Department, The Johns Hopkins University Applied Physics Laboratory, 11100 Johns Hopkins Road, Laurel, MD 20723-6099, USA;(2) Aerojet, P.O. Box 13222, Sacramento, CA 95813, USA |
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Abstract: | The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft was designed and constructed to withstand the harsh environments associated with achieving and operating in Mercury
orbit. The system can be divided into eight subsystems: structures and mechanisms (e.g., the composite core structure, aluminum
launch vehicle adapter, and deployables), propulsion (e.g., the state-of-the-art titanium fuel tanks, thruster modules, and
associated plumbing), thermal (e.g., the ceramic-cloth sunshade, heaters, and radiators), power (e.g., solar arrays, battery,
and controlling electronics), avionics (e.g., the processors, solid-state recorder, and data handling electronics), software
(e.g., processor-supported code that performs commanding, data handling, and spacecraft control), guidance and control (e.g.,
attitude sensors including star cameras and Sun sensors integrated with controllers including reaction wheels), radio frequency
telecommunications (e.g., the spacecraft antenna suites and supporting electronics), and payload (e.g., the science instruments
and supporting processors). This system architecture went through an extensive (nearly four-year) development and testing
effort that provided the team with confidence that all mission goals will be achieved.
Larry E. Mosher passed away during the preparation of this paper. |
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Keywords: | MESSENGER Mercury Spacecraft Subsystem Mass Power |
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