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Generalized multi-point inverse airfoil designIn a rather general sense, inverse airfoil design can be taken to mean the problem of specifying a desired set of airfoil characteristics, such as the airfoil maximum thickness ratio, pitching moment, part of the velocity distribution or boundary-layer development, etc., then from this information determine the corresponding airfoil shape. This paper presents a method which approaches the design problem from this perspective. In particular, the airfoil is divided into segments along which, together with the design conditions, either the velocity distribution or boundary-layer development may be prescribed. In addition to these local desired distributions, single parameters like the airfoil thickness can be specified. The problem of finding the airfoil shape is determined by coupling an incompressible, inviscid, inverse airfoil design method with a direct integral boundary-layer analysis method and solving the resulting nonlinear equations via a multidimensional Newton iteration technique. The approach is fast and easily allows for interactive design. It is also flexible and could be adapted to solving compressible, inverse airfoil design problems.
Document ID
19910069192
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Selig, Michael S.
(Pennsylvania State Univ. University Park, PA, United States)
Maughmer, Mark D.
(Pennsylvania State University University Park, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1991
Subject Category
Aerodynamics
Report/Patent Number
AIAA PAPER 91-3333
Accession Number
91A53815
Funding Number(s)
CONTRACT_GRANT: NGT-50341
Distribution Limits
Public
Copyright
Other

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