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Trailing edge flow conditions as a factor in airfoil designSome new developments relevant to the design of single-element airfoils using potential flow methods are presented. In particular, the role played by the non-dimensional trailing edge velocity in design is considered and the relationship between the specified value and the resulting airfoil geometry is explored. In addition, the ramifications of the unbounded trailing edge pressure gradients generally present in the potential flow solution of the flow over an airfoil are examined, and the conditions necessary to obtain a class of airfoils having finite trailing edge pressure gradients developed. The incorporation of these conditions into the inverse method of Eppler is presented and the modified scheme employed to generate a number of airfoils for consideration. The detailed viscous analysis of airfoils having finite trailing edge pressure gradients demonstrates a reduction in the strong inviscid-viscid interactions generally present near the trailing edge of an airfoil.
Document ID
19840009072
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Ormsbee, A. I. (Illinois Univ. Urbana, IL, United States)
Maughmer, M. D. (Illinois Univ. Urbana, IL, United States)
Date Acquired
September 4, 2013
Publication Date
January 1, 1984
Subject Category
Aerodynamics
Report/Patent Number
UILU-ENG-84-0501
NASA-CR-173294
NAS 1.26:173294
AAE-84-1
Accession Number
84N17140
Funding Number(s)
CONTRACT_GRANT: NAG1-76
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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