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

概要

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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 Cμ=0.0124∼0.0312. The results show that the CL and L/D is increased by lateral blowing while CD 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.
社団法人日本航空宇宙学会の論文
2001-06-05