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Boulder CO (SPX) Jul 01, 2010 The final instrument to fly aboard NASA's National Preparatory Project (NPP) weather satellite has been installed and is preparing for integration at Ball Aerospace and Technologies Corp. The Cross-track Infrared Sounder (CrIS), an advanced atmospheric sensor built by ITT, arrived at Ball's Colorado facility on June 18. CrIS is the last of five instruments to be integrated onto the Ball Aerospace-designed and built NPP spacecraft bus, under contract to NASA's Goddard Spaceflight Center. The five-instrument suite will collect and distribute remotely sensed land, ocean, and atmospheric data to the meteorological and global climate change communities. It will provide atmospheric and sea surface temperatures, humidity sounding, land and ocean biological productivity and cloud and aerosol properties. Ball will complete integration of the CrIS instrument by mid-July. NPP is expected to launch in late 2011.
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Engineers Assess Reaction Wheel On Dawn SpacecraftPasadena CA (JPL) Jun 30, 2010 Engineers are studying the reaction wheels on NASA's Dawn spacecraft after automatic sensors detected excess friction building up in one of them and powered it off early on the morning of June 17, 2010. Reaction wheels spin to help a spacecraft maintain attitude control, and Dawn, which is exploring the asteroid belt, uses three wheels in normal operations. The three other reaction wheels ... read more |
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