National Aeronautics and Space Administration (NASA)
Published: 2018-07-20
Total Pages: 26
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A description of a digital computer simulation of an Annular Momentum Control Device (AMCD) laboratory model is presented. The AMCD is a momentum exchange device which is under development as an advanced control effector for spacecraft attitude control systems. The digital computer simulation of this device incorporates the following models: six degree of freedom rigid body dynamics; rim warp; controller dynamics; nonlinear distributed element axial bearings; as well as power driver and power supply current limits. An annotated FORTRAN IV source code listing of the computer program is included. Woolley, C. T. and Groom, N. J. Langley Research Center NASA-TM-81797 RTOP 506-54-83-01-00