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Focus Area VIII: Satellite Drag in the Re-Entry Region. MotivationAccurate knowledge of satellite CD is essential for accurate prediction of satellite drag, and for inferring densities from accelerometer measurementsInsufficient knowledge exists about CD in the transition and slip-flow regimes (i.e., < 150 km) .
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1. Satellite Drag in the Re-entry Region Brian Argrow
Dept. Aerospace Engineering Sciences
University of Colorado
NADIR MURI
21 October 2008
3. Methodology
Direct Simulation Monte Carlo (DSMC) with calibrated gas-surface interaction models
Birds DS3V
NASA DSMC Analysis Code (DAC)
Investigate gas surface interaction models and produce calibrated modules to couple with DSMC
10. Year 1 Summary
Hywapyong Ko, PhD candidate (started Aug 08)
Simulations of simple geometries with DS3V
Paperwork completed for DAC97 (July 08)
Dedicated 8-processor workstation
Year 2 Focus
Development of DAC + gas/surface modeling
New course on Molecular Gas Dynamics (Sp 09)