Tests conducted in variable-density wind tunnel on several airfoils of different sizes and sections to determine effect of tunnel-wall interference and to determine correction which can be applied to reduce error caused thereby; use of several empirical corrections was attempted with little success; Prandtl theoretical correction gives best results and its use is recommended for correcting closed-wind-tunnel results to conditions of free air.
Wall interference in closed type wind tunnels
Nat. Advisory Committee Aeronautics -- Tech. Notes
1927
6 pages
10 Figs.
Report
English
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