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Recent experience in improving the accuracy of wall interference corrections in TsAGI T-128 wind tunnel by S.A. Glazkov; A.R. Gorbushin; A.I. Ivanov; A.V. Semenov is a Engineering article available to read on EtoBox.

What is Recent experience in improving the accuracy of wall interference corrections in TsAGI T-128 wind tunnel about?

Typical sources of systematic errors in the wind tunnel tests are considered and analyzed with emphasis on the prediction of wall interference problems. The review is made on the methods of wall interference corrections and boundary condition measurements in connection with the T-128 test technique development. The levels of interference corrections for transport aircraft tests are estimated using the computer codes based on linear subsonic theory and predicted boundary conditions. The main results of the transport aircraft test are presented and analyzed. The improved corrections based on the locally measured relationships between disturbed velocity components near upper and lower walls are applied to the experimental results. This technique enables to achieve precise and reliable interference-free experimental data. The scatter of corrected data in the whole range of perforation ratios (from 0% to 18%) is the following: \* 70.021 for lift coefficient/angle of attack dependence, \* 72 drag counts for drag coefficient.

Who reads Recent experience in improving the accuracy of wall interference corrections in TsAGI T-128 wind tunnel?

Author

S.A. Glazkov; A.R. Gorbushin; A.I. Ivanov; A.V. Semenov

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0376-0421)

Published

2001

Language

EN

Field

Engineering (Physical Sciences)