METHOD AND DEVICE FOR REORIENTATION CONTROL OF SPACE-CRAFT Russian patent published in 1997 - IPC

FIELD: cosmic engineering. SUBSTANCE: method and device includes kinetic momentum needed for space-craft turning to desirable angle automatic determining taking into account momentum operation needless during greatest part of turning operation. Required reorientation accuracy is realized by correcting pulses action during setting on time to return space-craft to hitting trajectory. Required kinetic momentum is calculated by kinetic momentum direction determining block assumption using about space-craft regular precession processing. Method and device means to resolve algorithmically boundary problem of initial angular velocity of space-craft to provide it turning from initial angular positioning to finishing one by free rotation of apparatus during set on time interval. First controlled object receives rated initial momentum, then in correction time corresponding pulse momentum corrections are made and for finishing residual angular velocity is quenching. Iterate guidance is provided by apparatus circuit composed by block of correction pulse performance allowing, regeneration block of initial positioning and block for starting time determining of correction pulse action. Turn processing trashing is made by platformless inertial navigation system, angular velocity detectors block, initial and final positioning control block, space-craft inertia moments set up block, turning time duration set up block, control momentum maximal value set up block, time scaling unit, turning real data determining block, required kinetic momentum direction determining block, space-craft kinetic momentum determining block, space-craft traversal axis momentum of inertia determining block, gearing and braking time determining block, acceleration direction determining block, control time unit and deflection determining block. EFFECT: sufficient efficiency of space-craft fly performance.