A DESCRIPTION OF THE DIGITAL ATTITUDE SIMULATION.
Abstract
The Digital Attitude Simulation (DAS) described deals with the trajectory and attitude motion of an earth-orbiting spacecraft of very general configuration. The spacecraft may have a mass distribution as a function of time and one generalized coordinate. The equations of motion are derived using Lagrangian mechanics. Perturbations owing to the higher order terms of the earth's potential, radiation pressure, and earth's magnetic field are described. The program can simulate the action of spin, gravity-gradient, or magnetically stabilized spacecraft. Options for using rotors, gravity-gradient booms, and a large variety of damping schemes including hysteresis, eddy current, time-lag, ball-in-ball, gimballed boom, and viscous dampers are available. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1968
- Accession Number
- AD0668141
Entities
People
- P. P. Pardoe
Organizations
- Johns Hopkins University Applied Physics Laboratory