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hypersonic navier stokes comparisons to orbiter flight dataHypersonic chemical nonequilibrium simulations of low earth orbit entry flow fields are becoming increasingly commonplace as software and computational capabilities become more capable. However, development of robust and accurate software to model these environments will always encounter a significant barrier in developing a suite of high quality calibration cases. The US3D hypersonic nonequilibrium Navier Stokes analysis capability has been favorably compared to a number of wind tunnel test cases. Extension of the calibration basis for this software to Orbiter flight conditions will provide an incremental increase in confidence. As part of the Orbiter Boundary Layer Transition Flight Experiment and the Hypersonic Thermodynamic Infrared Measurements project, NASA is performing entry flight testing on the Orbiter to provide valuable aerothermodynamic heating data. An increase in interest related to orbiter entry environments is resulting from this activity. With the advent of this new data, comparisons of the US3D software to the new flight testing data is warranted. This paper will provide information regarding the framework of analyses that will be applied with the US3D analysis tool. In addition, comparisons will be made to entry flight testing data provided by the Orbiter BLT Flight Experiment and HYTHIRM projects. If data from digital scans of the Orbiter windward surface become available, simulations will also be performed to characterize the difference in surface heating between the CAD reference OML and the digitized surface provided by the surface scans.
Document ID
20090026318
Document Type
Conference Paper
Authors
Campbell, Charles H.
(NASA Johnson Space Center Houston, TX, United States)
Nompelis, Ioannis
(Minnesota Univ. Minneapolis, MN, United States)
Candler, Graham
(Minnesota Univ. Minneapolis, MN, United States)
Barnhart, Michael
(Eloret Corp. Sunnyvale, CA, United States)
Yoon, Seokkwan
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2009
Subject Category
Aerodynamics
Report/Patent Number
JSC-CN-18483
Meeting Information
48th AIAA Aerospace Sciences Meeting(Orlando, FL)
Funding Number(s)
WBS: WBS 377816.06.02.05.03.05.04
Distribution Limits
Public
Copyright
Other