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Spacecraft momentum unloading using controlled magnetic torquesA method for maintaining the attitude of a three-axis controlled satellite by use of magnetic torquers includes using magnetometers for measuring the direction of the ambient geomagnetic field. The direction of the net reaction wheel momentum is also determined. The angle between the direction of the geomagnetic field and the net reaction wheel momentum is determined. The angle is compared with a threshold value. Magnetic torquer power consumption is reduced by operating the magnetic torquers only when the angle exceeds the threshold value.
Document ID
20080004328
Acquisition Source
Goddard Space Flight Center
Document Type
Other - Patent
Authors
Linder, David M.
Goodzeit, Neil E.
Schwarzschild, Marc
Date Acquired
August 24, 2013
Publication Date
June 23, 1992
Subject Category
Aeronautics (General)
Report/Patent Number
Patent Application Number: US-PATENT-APPL-SN-488919
Patent Number: US-PATENT-5,123,617
Funding Number(s)
CONTRACT_GRANT: NAS5-32000
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-5,123,617
Patent Application
US-PATENT-APPL-SN-488919

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