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Two- and three-dimensional model and wall data from a flexible-walled transonic test sectionBoth two- and three-dimensional model testing is being carried out in the transonic flexible-walled wind tunnel test section. The test section has flexible top and bottom walls with rigid sidewalls. Interference is eliminated by adjustments based on data taken at walls in two dimensional models. Cast-7 data will illustrate agreement between various flexible-walled tunnels. In three-dimensional models interference cannot be eliminated but wall adjustments can control and relieve the principal sources of wall-induced errors. Estimates of magnitudes of the control which may be exercised on flow by movement of one wall jack are presented. A wall control algorithm (still in analytic development stage) based on use of this data is described. Brief examples of control of wall-induced perturbations in region of model are given.
Document ID
19850003707
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Goodyer, M. J.
(Southampton Univ.)
Cook, I. D.
(Southampton Univ.)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Publication Information
Publication: NASA. Langley Research Center Wind Tunnel Wall Interference Assessment and Correction, 1983
Subject Category
Aerodynamics
Accession Number
85N12015
Funding Number(s)
CONTRACT_GRANT: NSG-7172
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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