Lateral Blowingによる次世代SST用改良アロー翼の亜音速領域における空力特性向上の研究

抄録

An experimental study on the improvement of aerodynamic characteristics of a modified arrow wing by applying lateral blowing in subsonic flow has been conducted. The modified arrow wing, which is one of the baseline configurations of the proto-type of next-generation SST, is selected for the experiments. The testing model is the combination of a body of a circular cylinder and ogive and a modified arrow wing with aspect ratio of 1.91. The lateral blowing is realized by injecting a pair of sonic jets parallel to the trailing edge of the wing. The experiments have been conducted in the transonic wind tunnel of ISAS under the testing conditions of free-stream Mach number M_∞=0.3, 0.4 and 0.5, Reynolds number Re=4.77×10⁶∼7.34×10⁶, angle of attack α=−15°∼30° and jet momentum coefficient C_μ=0.0124∼0.0312. The results show that the C_L and L/D is increased by lateral blowing while C_D is slightly increased for positive α. The results suggest that the lateral blowing can be useful for the improvement of aerodynamic characteristics of the arrow wing in subsonic flow.