 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
Cassini switches to backup thrusters
Pasadena, Calif. (UPI) Mar 12, 2009 U.S. space agency scientists say the Cassini spacecraft has successfully switched to a backup set of propulsion thrusters as it orbits Saturn. The National Aeronautics and Space Administration said the late Wednesday swap was performed because of degradation in the performance of the primary thrusters, which had been in use since Cassini's launch in 1997. The space agency said the switch marked only the second time in Cassini's 11 years of flight that its engineering teams have gone to a backup system. "The thrusters are used for making small corrections to the spacecraft's course, for some attitude control functions, and for making angular momentum adjustments in the reaction wheels, which also are used for attitude control," NASA said, noting nearly all Cassini engineering subsystems have redundant backup capabilities. Cassini, which has successfully completed its original four-year planned tour of Saturn and is now in extended mission operations, is a cooperative project of NASA and the European and Italian space agencies. The Cassini mission is managed by NASA's Jet Propulsion Laboratory in Pasadena, Calif. Related Links Explore The Ring World of Saturn and her moons Jupiter and its Moons The million outer planets of a star called Sol News Flash at Mercury
Study: Solar water heating good investment
Maharashtra, India (UPI) Mar 10, 2009 Scientists in India say they have analyzed the engineering and economics of a solar water-heating system and determined it is a good investment. |
|
|
| The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement |
