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Discrete Roughness Transition for Hypersonic Flight VehiclesThe importance of discrete roughness and the correlations developed to predict the onset of boundary layer transition on hypersonic flight vehicles are discussed. The paper is organized by hypersonic vehicle applications characterized in a general sense by the boundary layer: slender with hypersonic conditions at the edge of the boundary layer, moderately blunt with supersonic, and blunt with subsonic. This paper is intended to be a review of recent discrete roughness transition work completed at NASA Langley Research Center in support of agency flight test programs. First, a review is provided of discrete roughness wind tunnel data and the resulting correlations that were developed. Then, results obtained from flight vehicles, in particular the recently flown Hyper-X and Shuttle missions, are discussed and compared to the ground-based correlations.
Document ID
20070005149
Acquisition Source
Langley Research Center
Document Type
Conference Paper
Authors
Berry, Scott A. (NASA Langley Research Center Hampton, VA, United States)
Horvath, Thomas J. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2007
Subject Category
Aerodynamics
Report/Patent Number
AIAA Paper 2007-0307
Meeting Information
Meeting: 45th AIAA Aerospace Sciences Meeting and Exhibit
Location: Reno, NV
Country: United States
Start Date: January 8, 2007
End Date: January 11, 2007
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 732759.07.05
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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