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TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.v46.i7.10
pages 619-629

INFLUENCE OF HIGH-BYPASS-RATIO TURBOFAN JETS ON AERODYNAMIC CHARACTERISTICS OF HIGH-LIFT WING

Albert Vasilievich Petrov
Central Aerohydrodynamic Institute (TsAGI) 1, Zhukovsky str., Zhukovsky, 140180, Moscow region
Vladimir Fedorovich Tretyakov
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky, Moscow Region, 140180, Russian Federation

ABSTRACT

The results presented here describe experimental investigations of the jet blowing effect on the aerodynamic performance of a rectangular wing with aspect ratio AR = 4 (span l = 1200 mm, chord b = 300 mm) with a two-element slotted flap. The investigations were performed at the TsAGI T-106 wind tunnel at the Mach numbers M = 0 and 0.15 and Reynolds number Re = 0.94 × 106,for wing angles of attack α = 2−10° and flap deflection angles δf = 0°, 35°/40°, and 40°/70°. Jet modeling was conducted using cold compressed air, blown from a subsonic nozzle with relative diameters equal to DN = DN/b = 0.27, 0.33, and 0.42, and corresponding to turbofan engines of different bypass ratios (m Ø 5−15) at different nozzle positions relative to the wing and in the thrust coefficient range cT = 0−1.6.