Abstract
스트레이크를 부착한 이중 삼각 날개에서 스트레이크의 붙임각이 날개면 압력분포와 와류 특성에 미치는 영향을 실험적으로 연구하였다. 스트레이크 붙임각의 음(-)방향 증가(스트레이크가 주 날개 윗면으로부터 pitch-down방향으로 부착된 상태)는 날개 전체의 받음각을 증가시키는 것과 같은 효과를 가져와 날개 윗면의 부압의 크기를 증가시켰다. 이러한 스트레이크 붙임각 변화에 의한 날개 윗면 부압 분포 변화는 와류의 강도 변화에 기인하기 보다는 와류 중심이 날개면에 가까이 위치하는 것에 기인하였다. The effects of strake incidence-angle on the vortex characteristics and the wing-surface pressure distribution for a double-delta wing with strake were investigated experimentally. The strake incidence-angle of negative sign(strake is pitched down from the main-wing upper-surface) increased the suction pressure of the wing-upper surface, which was the same effect of increase of angle of attack. This change of the suction pressure was caused by the closer movement of the vortex cores to the wing upper surface rather than the increase of the vortex strength.
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