【摘要】 研究鸭式布局飞机模型振动鸭翼对主翼面涡流场的非定常干扰影响，进行了有无鸭翼、鸭翼不同偏角和不同振动频率、不同振动平均偏角及不同模型攻角下的主翼面涡流场静动态流动显示和翼面及立尾上压力分布测量。分析上述参数对主翼涡大小和强度、主翼涡位置和破散特性、压力分布特性的影响及其造成该现象的上下洗效应、涡系干扰和动态迟滞特性等复杂流动机理。更多还原

【Abstract】 It was investigated to effect on unsteady vortex flow fields about a double-delta-wing by an oscillating canard on a canard configurated airplane model. The static and dynamic flow visualization and pressure distribution measurement on the wing and the tail were conducted under the test conditions: without or with canard, different canard angle of attack,different canard frequency and mean canard angle and different model angle of attack. The effect of these parameters on the wing vortex size and strength,on position of wing vortex and breakdown,on pressure distribution was analysed.The produced those phenomena flow mechanism,such as up-and downwash,vortex interference and dynamic hysteresis were also discussed.更多还原