Terzibaschian, T. (2005) Experiences with the BIRD magnetic coil system for wheel desaturation, satellite rate damping and attitude control - the concept of virtual wheel systems. In: Digest of the 5th International Symposium of the International Academy of Astronautics, Berlin, April 4-8, 2005, V, pp. 441-444. Wissenschaft & Technik Verlag. 5th Symposium on Small Satellites for Earth Observation, April 4 - 8, 2005, Berlin, Germany. ISBN 3-89685-570-0.
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The small LEO satellite BIRD (Bi Spectral Infrared Detection) was launched October 2001. It was mainly developed as an infrared detection and technology demonstrator with a hard design to cost philosophy. One point was a short nominal life time of one year in space. It influenced several aspects of satellite design and selection of components. But BIRD operated without any problem for two years before serious problems started. In February 2003 BIRD lost the one and only gyro system (Honeywell, HG1700 AE09) Wrong gyro output led to a loss of 3 from 4 reaction wheels. Only the magnetic coil system kept the satellite in a safe and stable orientation and guaranteed the survival of the satellite for 6 month without any software change on board. In August 2004 changed software was loaded in order to improve the attitude control and to get a better sun orientation. It was successful, even Earth observation became again possible as it was demonstrated by some data takes around the world.
|Document Type:||Conference or Workshop Item (Paper)|
|Title:||Experiences with the BIRD magnetic coil system for wheel desaturation, satellite rate damping and attitude control - the concept of virtual wheel systems|
|Journal or Publication Title:||Digest of the 5th International Symposium of the International Academy of Astronautics, Berlin, April 4-8, 2005|
|Page Range:||pp. 441-444|
|Publisher:||Wissenschaft & Technik Verlag|
|Series Name:||Small Satellites for Earth Observation|
|Keywords:||Spacecraft concepts and sub-systems, results of small satellite missions, attitude control, magnetic coils|
|Event Title:||5th Symposium on Small Satellites for Earth Observation, April 4 - 8, 2005, Berlin, Germany|
|HGF - Research field:||Aeronautics, Space and Transport (old)|
|HGF - Program:||Space (old)|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Optical Information Systems|
|Deposited By:||Ute Dombrowski|
|Deposited On:||16 Sep 2005|
|Last Modified:||14 Jan 2010 16:19|
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