![]() The result indicated a Clmax of 1.3 for the Clark YH with no flap deflection under these conditions. 359–369.So while digging around I found some data on the Yak’s Clark YH wing profile in NACA TN 240 which actually contained measurements from the NACA variable density wind tunnel at a Reynolds number of 3.6 million for a finite wing of aspect ratio 6. Popkov, Blockage effect induced by an airfoil model in a low-velocity wind-tunnel test section, Thermophysics and Aeromechanics, 2020, Vol. Rasuo, Scaling between wind tunnels-results accuracy in two-dimensional testing, Trans. Semenov, Development of computational and experimental methods for improving test accuracy, Trudy TsAGI, 2019, Iss. Holder, Wind-Tunnel Techniques, Moscow, Foreign Language Publishing House, 1955, P. Semenov, Experimental investigation of the effect of nozzle shape and test-section perforation on the stationary and non-stationary characteristics of flow field in the large transonic TsAGI wind tunnel, Aeronautical J., 2005, Vol. Kemp, Transonic assessment of two-dimensional wind tunnel wall interference using measured wall pressures, Advanced Technology Airfoil Research, NASA CP-2045, 1978, Vol. ![]() Sawada, General correction method of the interference in 2-dimensional wind tunnels with ventilated walls, Transactions of the Japan Society for Aeronautical and Space Sci., 1978, Vol. ![]() Smith, Measured boundary conditions methods for 2D flow, AGARD CP-335, 1982, P. Quest, A numerical approach for assessing slotted wall interference using the CRM model at ETW, CEAS Aeronaut J., 2018, Vol. Neyland, Conception of electronic wind tunnel and first results of its implementation, Progress in Aerospace Sci., 2001, Vol. Gakhov, Boundary-Value Problems, Moscow, Nauka, 1977, P. Sorokin, Numerical modeling of transonic flow past an airfoil in a wind tunnel, Comp. Mokry, Subsonic wall corrections in the air 1.5 m wind tunnel, Report LR-AL-2006-0056, 2006, P. Semenov, Recent experience in improving the accuracy of wall interference corrections in TsAGI T-128 wind tunnel, Progress in Aerospace Sci., 2001, Vol. Dahm, Direct assessment of wall interference in a two-dimensional subsonic wind tunnel, AIAA Paper, 1982, No. Ohman, Application of the fast fourier transform to two-dimensional wind tunnel wall interference, J. Gopinath, Wall Interference evaluation from pressure measurements on control surfaces, J. Bouniol, Nouvelle méthode de correction des effets de parois en courant plan, Rech. Lo, Tunnel interference assessment by boundary measurements, AIAA J., 1978, Vol. Glazkov, Determination of the influence of wind-tunnel walls on the parameters of the flow near them, Uchenye Zap. Glazkov, Subsonic flow around a thin airfoil in a channel with perforated walls, Uchenye Zap. Ivanova, Investigation of induction of permeable wind-tunnel walls according to known flow parameters near them, Uchenye.
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