NUMERICAL SIMULATION OF THE ATTITUDE EQUATIONS OF A SATELLITE CONTAINING DAMPING ROTORS AND A REACTION WHEEL
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
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This report describes a program for simulating the motion of a rigid body containing a reaction wheel, damping media and torquing magnetic or otherwise. The dynamical equations are simulated in terms of the angular velocities in body-fixed coordinates and the kinematic equations are simulated in terms of direction cosines. The entire system of equations has been programmed using a fourth order predictor-corrector method with automatic step- size adjustment and a fourth order Runge-Kutta starting routine. The ratio of computer time to real time is between 1 to 10 and 2 to 1 for LES-5-type satellites.
- Unmanned Spacecraft