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TsAGI Science Journal

ISSN Imprimir: 1948-2590
ISSN En Línea: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2011004141
pages 427-444

EXPERIMENTAL STUDY OF TANGENTIAL BLOWING EFFECT OF SUPERSONIC JET ON AERODYNAMICS OF A SUPERCRITICAL WING AT TRANSONIC SPEEDS

Vsevolod Davydivich Bokser
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region
Albert Vasilievich Petrov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region
Petr Vladimirovich Savin
Central Aerohydrodynamic Institute (TsAGI), Zhukovsky str. 1, Zhukovsky, 140180, Russia

SINOPSIS

The results of experimental studies of tangential jet blowing efficiency for improvement of supercritical wing aerodynamics at transonic speeds are presented. The studies of the wing-fuselage model were performed in the TsAGI T-106 transonic wind tunnel in Mach number ranges of M = 0.4−0.8, Reynolds number ranges of Re = (1.4−2.2)106, and angles-of-attack α = −2°−15°. The effects of jet blowing intensity on lift, pitching moment, and drag of the model, and also on the pressure distribution at the wing middle section are examined. The values of jet momentum coefficient, required for shock-induced flow separation suppression at transonic speeds, are determined. It is shown that at Mach number M = 0.78 tangential jet blowing with low intensity (Cμ = 0.003−0.005) increases the maximum lift-to-drag ratio values of the wing-fuselage model by 10% approximately.


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