Spacecraft Charging, an Update
Spacecraft charging is a continuing problem. This review concentrates on issues related to the dense, low altitude plasma environment and the auroral zone and on the problems caused by internal charging.
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Engineering topics
Garrett, H.B.
Publications and source records attributed to Garrett, H.B..
Spacecraft Charging, An Update
Spacecraft charging and its associated plasma interactions continue to be major issues for Earth-orbiting spacecraft. Although typically thought of as a surface effect on geosynchronous spacecraft, internal charging and low-altitude phenomena are increasingly causing concern. This review will concentrate on the problems introduced by penetrating electrons and related processes, and on issues tied to plasma/aurora.
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CMOS Charged Particle Spectrometers
Integrated circuits manufactured in CMOS technology, have been developed as diffusion-based charged particle spectrometers for space applications. A four-chip spectrometer designed to count protons and heavier ions was flown on the Clementine spacecraft, and the spectrometer proton response is compared to GOES-6 proton data for the 21 Feb. 1994 solar proton event.
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The Clementine Mission
The Clementine Mission is summarized from purposes of the mission through details of the instruments. The mission was a joint Department of Defense and NASA mission to use lighter instruments and other equipment developed by the military for space exploration. New lightweight items on Clementine include batteries, optical sensors, reaction wheels, star trackers, release systems, and inertial measurement units. Other items include a compression chip set, a solid state data recorder, autonomous navigation, and a 32-bit RISC computer.
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