摘要
采用螺旋桨飞机动力模拟风洞试验技术及粒子图像测速技术,研究双发常规布局涡桨飞机的螺旋桨滑流对飞机纵向气动特性的影响规律。通过测力风洞试验研究螺旋桨不同位置处滑流对飞机的升阻特性、力矩特性及平尾下洗等纵向气动特性的影响,利用PIV技术研究测力试验优选桨盘位置的飞机部件典型剖面受滑流影响时的流场变化情况。研究结果表明,螺旋桨下沉后滑流对飞机升阻特性的不利影响最明显,螺旋桨前伸和安装角由正变负时滑流对飞机的升阻特性均有改善,而螺旋桨前伸在飞机失速迎角附近对升力特性的改善更为明显。
Using the dynamic simulation and PIV test technology for propeller aircraft?re-search on the propeller slipstream effect on the longitudinal aerodynamic characteristics of the conventional layout twin-engined turboprop aircraft is conducted.Wind tunnel test is used to study the slipstream effect on longitudinal characteristics as the propeller position changes,such as the aircraft lift and drag characteristics?moment characteristics and horizontal tail downwash.PIV test is used to setting out typical section of aircraft components?mainly focus on the position conformed by slipstream wind tunnel test.Slipstream has bad effect especially on lift and drag characteristics when the propeller position sinkage.Both extending the propeller position forward and changing the propeller installation angle can improve the aerodynamic characteristics of the aircraft,while the aircraft lift characteristic is improved obviously especially around the stall an-gle when the propeller position extends forward.
作者
李兴伟
李聪
高静
李盛文
Li Xingwei;Li Cong;Gao Jing;Li Shengwen(Aerodynamics Research Institute of Aeronautics,Haerbin 150001,China)
出处
《实验流体力学》
CSCD
北大核心
2017年第5期46-52,87,共8页
Journal of Experiments in Fluid Mechanics
关键词
螺旋桨滑流
短舱位置
风洞试验
PIV试验
propeller slipstream effect
propeller position
wind tunnel test
PIV test
