Statistics – Computation
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002stin...0314812b&link_type=abstract
Conference Paper, AIAA Atmospheric Flight Mechanics Conference and Exhibit
Statistics
Computation
Aerodynamics, Data Bases, Spacecraft Configurations, Mars Landing, Mars Missions, Configuration Management, Computational Fluid Dynamics, Computerized Simulation, Structured Grids (Mathematics), Unstructured Grids (Mathematics), Longitudinal Stability, Angle Of Attack, Aerodynamic Balance
Scientific paper
An aerodynamic database has been generated for the Mars Smart Lander Shelf-All configuration using computational fluid dynamics (CFD) simulations. Three different CFD codes, USM3D and FELISA, based on unstructured grid technology and LAURA, an established and validated structured CFD code, were used. As part of this database development, the results for the Mars continuum were validated with experimental data and comparisons made where applicable. The validation of USM3D and LAURA with the Unitary experimental data, the use of intermediate LAURA check analyses, as well as the validation of FELISA with the Mach 6 CF4 experimental data provided a higher confidence in the ability for CFD to provide aerodynamic data in order to determine the static trim characteristics for longitudinal stability. The analyses of the noncontinuum regime showed the existence of multiple trim angles of attack that can be unstable or stable trim points. This information is needed to design guidance controller throughout the trajectory.
Bobskill Glenn J.
Parikh Paresh C.
Prabhu Ramadas K.
Tyler Erik D.
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