System for controlling the direction of the momentum vector...

Details System for controlling the direction of the momentum vector... System for controlling the direction of the momentum vector...

B - Operations, Transporting

64

G

244/1.2

B64G 1/24 (2006.01) B64G 1/36 (2006.01) B64G 1/40 (2006.01) G01S 3/78 (2006.01) G05D 1/08 (2006.01) B64G 1/44 (2006.01)

Patent

CA 1118741

System for controlling the direction of the momentum vector of a geosynchronous satellite ABSTRACT OF THE DISCLOSURE A system for compensating the disturbance torques applied to a satellite, which eliminates the requirement for a thruster control loop. The disturbance torque itself is used as the compensating torque in order to super-impose to the incidental misalignment of the solar panel arrays an artificial misalignment that can cause the momentum vector to be adjusted to the desired direction in order to restore the correct attitude of the satellite. The direction of the momentum vector is controlled in orbit only by solar sailing, that is by organizing at prescribed times suitable manoeuvres of one of the solar panels in order to adjust the solar panel array configuration when the roll angle of the satellite exceeds a determined threshold value.

345866

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