Instrument Host Information
IDENTIFIER urn:nasa:pds:context:instrument_host:spacecraft.dawn::1.3
NAME DAWN
TYPE Spacecraft
DESCRIPTION The Dawn spacecraft is generally box-shaped (1.64 x 1.27 x 1.77 m) and made of aluminum and graphite composite with a dry mass of 747.1 kg and a fueled launch mass of 1217.7 kg. The spacecraft core is a graphite composite cylinder, with the titanium hydrazine and xenon tanks mounted inside. Mounting, access, and other panels are aluminum core with aluminum facesheets. Two solar panel wings extend 19.7 m tip-to-tip and are mounted on opposite sides of the spacecraft. A parabolic fixed 1.52 m high gain dish antenna is mounted on one side of the spacecraft in the same plane as the solar arrays. Three low gain antennas are also mounted on the spacecraft. A 5 m long magnetometer boom extends from the top panel of the spacecraft. Also mounted on the top panel is the instrument bench, holding the cameras, mapping spectrometer, laser altimeter, and star trackers. A gamma ray / neutron spectrometer is mounted on the top panel as well.
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REFERENCES Rayman, M.D., T.C. Fraschetti, C.A. Raymond, and C.T. Russell, Dawn: A mission in development for exploration of main belt asteroids Vesta and Ceres, Acta Astronautica 58, 605-616, 2006.