NDLI: An experimental study of transonic flow about a supercritical airfoil

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An experimental study of transonic flow about a supercritical airfoil

Content Provider	NASA Technical Reports Server (NTRS)
Author	Spaid, F. W. Stivers Jr., L. S. Dahlin, J. A. Bachalo, W. D.
Copyright Year	1983
Description	A series of experiments was conducted on flow fields about two airfoil models whose sections are slight modifications of the original Whitcomb supercritical airfoil section. Data obtained include surface static-pressure distributions, far-wake surveys, oil-flow photographs, pitot-pressure surveys in the viscous regions, and holographic interferograms. These data were obtained for different combinations of lift coefficient and free-stream Mach number, which included both subcritical cases and flows with upper-surface shock waves. The availability of both pitot-pressure data and density data from interferograms allowed determination of flow-field properties in the vicinity of the trailing edge and in the wake without recourse to any assumptions about the local static pressure. The data show that significant static-pressure gradients normal to viscous layers exist in this region, and that they persist to approximately 10% chord downstream of the trailing edge. Comparisons are made between measured boundary-layer properties and results from boundary-layer computations that employed measured static-pressure distributions, as well as comparisons between data and results of airfoil flow-field computations.
File Size	7232971
Page Count	108
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19830025574
Archival Resource Key	ark:/13960/t2j728s3j
Language	English
Publisher Date	1983-08-01
Access Restriction	Open
Subject Keyword	Aerodynamics Static Pressure Transonic Flow Flow Distribution Trailing Edges Holography Supercritical Wings Boundary Layers Mach Number Pressure Gradients Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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