水陆两栖飞机方向舵附面层控制研究

水陆两栖飞机采用增升手段降低起降速度后,需要提高方向舵的操纵能力。将吹气式附面层控制方法应用到水陆两栖飞机的垂尾上,建立其二维模型并进行数值模拟,设计垂尾安定面与方向舵之间的缝道挡板,防止迎风一侧的高压气流冲击背风面、阻碍吹气气流附着;研究垂尾安定面后缘和前缘吹气共同作用的组合吹气方案,防止方向舵较早失速。结果表明:垂尾采用吹气式附面层控制之后,结合缝道挡板和组合吹气,方向舵操纵能力可提高1倍左右。

Study on the boundary layer control of rudder of amphibious aircraft

The boundary layer control method by blowing is applied to the tail of amphibious plane to improve the steering ability of rudder. Using the CFD numerical simulation method, a two-dimensional scheme for the boundary layer control of the tail of a large amphibious aircraft was studied, design a seam baffle between the vertical stabilizer and the rudder, so as to prevent the high-pressure air flow on the windward side from hitting the leeward surface, Obstructing the air-blowing adhesion; The combined blowing scheme of the front edge of the tail stabilizer surface was studied to prevent the rudder from stall earlier. The results show that the steering ability of rudder is increased by about one times after the vertical tail is controlled by a blowing and combined with a seam baffle and a combination of blowing.