Country of Origin: France. Country of Publication: France Document Type: CONFERENCE PAPER Most documents available from AI A A Technical Library Other Availability: CEPADUES, Toulouse, France Journal Announcement: STAR8514 Reference systems, kinetic equations, and equations of motion around a center of mass used in satellite attitude control system design are introduced. Coupled and perturbing forces are described. Gravitational effects and the effects of outside forces (aerodynamic drag, magnetic effects, Foucault currents, solar radiation) are assessed. Modeling of spin stabilization is illustrated. (Author (ESA)) Source of Abstract (Subfile): ESA Descriptors: *CONTROL SYSTEMS DESIGN; *ORBITAL MECHANICS; ♦SATELLITE ATTITUDE CONTROL; CENTER OF MASS; INERTIAL REFERENCE SYSTEMS; KINETIC EQUATIONS; SATELLITE PERTURBATION; SPACECRAFT MODELS; SPIN STABILIZATION Subject Classification: 7518 Spacecraft Design, Testing & Performance (1975- ) The dynamics of the attitude control and stabilization systems of spacecraft with a controlled gravity gradient stabilizer Dinamika sistem orientatsii i stabilizatsii kosmicheskikh apparatov s uppravliaemym gravitatsionnym stabilizatorom POTAPENKO, E. M. Akademiia Nauk SSSR, Izvestiia, Mekhanika Tverdogo Tela (ISSN 0572-3299), Jan.-Feb. 1985, p. 22-30. In Russian. 6 Refs. Language: Russian Country of Origin: USSR Country of Publication: USSR Document Type: JOURNAL ARTICLE Most documents available from AIAA Technical Library Journal Announcement: IAA8512 The paper is concerned with the dynamics of a spacecraft with a controlled gravity gradient stabilizer in the form of a long thin-walled boom having a load at its free end and mounted in a two-degrees-of-freedom controlled suspension at the other end. The use of various auxiliary mechanisms for vibration damping, such as flywheels, gyroscopes, jet engines, and electromagnets, is discussed. Attention is also given to the effect of the elasticity and deflections of the stabilizer boom on the stability of the spacecraft motion. Expressions are obtained allowing the analysis, synthesis, and comparison of the systems under study. (V.L.) Source of Abstract (Subfile): AIAA/TIS Descriptors: *GRAVITY GRADIENT SATELLITES; *SATELLITE ATTITUDE CONTROL; *SPACECRAFT STABILITY; BOOMS (EQUIPMENT); EQUATIONS OF MOTION; SPACECRAFT CONFIGURATIONS; VIBRATION DAMPING Subject Classification: 7518 Spacecraft Design, Testing & Performance (1975- ) Periodic motions of a satellite relative to its center of mass under conditions of single-axis gravity gradient stabilization Periodicheskie dvizheniia sputnika otnositel'no tsentra mass v rezhime odnoosnoi gravi-
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