项目名称: 大迎角非共面鸭翼涡主动控制技术
项目编号: No.11272034
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 刘沛清
作者单位: 北京航空航天大学
项目金额: 72万元
中文摘要: 近距耦合非共面鸭式布局在中大迎角下,鸭翼涡与机翼涡的干扰作用主要受涡系的卷绕和破裂行为控制,实验发现鸭翼涡和机翼涡卷绕后,可以明显改善机翼涡的气动特性,延迟机翼涡的破裂和增大布局失速迎角,这对提高布局的机动性和鸭翼的控制效率具有重要作用。因此在非共面布局的基础上,将鸭翼作为涡流发生器,通过实验和数值模拟研究,揭示现代战斗机的复杂涡系干扰和控制机理,利用高频脉冲射流激励器对鸭翼涡实施展向主动涡控制,用以延迟和控制非共面鸭翼涡的破裂,进而通过鸭翼涡与机翼涡的有利干扰,实现对近耦合非共面鸭式布局机翼涡的间接控制,并且通过建立控制参数、布局参数和气动参数之间的定量关系,提出一种高效主动控制鸭翼和机翼涡的技术措施。
中文关键词: 鸭式布局;非共面;主动控制;展向射流;
英文摘要: Many studies have shown that no-coplanar close-coupled canard at high angle of attack,the beneficial interaction between the canard vortex and wing vortex,can significantly delay the vortex breakdown and the stall incidence angle.This will play an important role in improving the maneuverability of the close-coupled no-coplanar canard wing configuration.But at high angle of attack, the upwash of wing can make the canard vortex easy to break ,and result in significantly lower canard control efficiency.In view of this,our investigation,through experimental and numerical simulation, use the canard as a vortex generator to explore an efficient energy-saving technology of active vortex control by high-frequency pulse jet actuators ,as well as delay and control the no-coplanar canard vortex breakdown. Meanwhile we will achieve in close-coupled canard wing vortex of indirect control through beneficial interference between the canard vortex and wing vortex,and build the quantitative relationship of control parameters, configuration parameters and aerodynamics parameters to reveal the law of the efficient active control of canard vortex.
英文关键词: canard configuration;no-coplanar;flow control;impulse jet;