Aeronautics and astronautics – Spacecraft – Attitude control
Patent
1996-11-07
1999-05-25
Mojica, Lissi
Aeronautics and astronautics
Spacecraft
Attitude control
244170, 244173, B64G 132, B64G 138, B64G 144
Patent
active
059063394
ABSTRACT:
In a satellite (20), two-axis solar panel drives (56, 58) allow two degrees of rotational freedom of movement for solar panels (22, 24). Regulation of electrical current loops (46, 48) within the solar panels (22, 24) generates a magnetic field. When the solar panels (22, 24) are tilted about an overturning axis (28), the magnetic field provides a component of a control torque about a pitch axis (30). An on-board processor (52) commands the panel drives (56, 58) and a magnetic torque actuator (60) to instantaneously and simultaneously damp disturbance torques about a windmill axis (26), an overturning axis (28), and a pitch axis (30). The processor (52) allows disturbance torque to be corrected continuously rather than periodically over the course of an orbit. Counter-disturbance torques (90) are applied (88) in synchronism with a satellite nutation frequency (76) but out of phase with the nutation so that nutation is damped.
REFERENCES:
patent: Re29177 (1977-04-01), Michaelis
patent: 4325124 (1982-04-01), Renner
patent: 4591116 (1986-05-01), Guenther et al.
patent: 4732354 (1988-03-01), Lievre
patent: 4747567 (1988-05-01), Johnson et al.
patent: 4759517 (1988-07-01), Clark
patent: 4949922 (1990-08-01), Rosen
patent: 5133518 (1992-07-01), Flament
patent: 5149022 (1992-09-01), Flament
patent: 5305971 (1994-04-01), Decanini
patent: 5310144 (1994-05-01), Salvatore et al.
patent: 5413293 (1995-05-01), Gomberg et al.
patent: 5540405 (1996-07-01), Bender et al.
patent: 5563794 (1996-10-01), Cosner et al.
Basuthakur Sibnath
Ibanez-Meier Rodrigo
Stratman Bob Dennis
LeMoine Dana B.
Mojica Lissi
Motorola Inc.
LandOfFree
Multiple axis solar sailing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multiple axis solar sailing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple axis solar sailing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-397538