The Voyager Cosmic Ray Experiment includes seven dE/dx-E telescopes to measure the energy and charge of particles of 1 < Z < 26 in the energy range 1-500 MeV/ nucleon and to measure electron energy in the range 3 < Ee< 110 MeV. Isotopic composition of hydrogen through sulfur in the range up to 75 MeV/nucleon can also be resolved. The electronic systems include a dual-gain, charge sensitive preamplifier, 4096-channel pulse height analyzers for three parameter analysis of selected events, and an event type readout polling scheme to maximize the use of available telemetry space and to enhance the occurrence of rare events in the data. Details of the detector, electronic and mechanical design are presented.
Abstvuct -Many hture missions will be implemented with distributed spacecraft systems, which require formation flying capability. Here, formation flying means controlling the motion of one or more spacecraft relative to other nearby spacecraft to enable them to operate as a distributed sensor, in orbit about a planet or in deep space, at interspacecraft ranges fiom meters to many kilometers. This paper discusses BATC experience, modeling and study work in formation flying. We discuss our deep space formation flying work (StarLight, Terrestrial Planet Finder, and MAXIM Pathfinder), low Earth orbit formation flying work (Cloudsat), and rendezvous and docking work (Deep Impact and Orbital Express).
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