摘要
为研究超空泡航行体在水平面机动转弯过程中的弹道特性,采用航行体头部设置预置舵角方法实现,开展了0°、3°和6°预置舵角下航行体自由运动的试验研究。试验在水池中进行,采用高速摄影观察不同预置舵角下的空泡演化过程,采用内测装置测量航行体运动参数,获得了不同预置舵角下超空泡航行体水平运动过程中的弹道特性。试验结果表明:当预置舵角为0°时,航行体侧向力由于非定常因素扰动小幅波动,但均值基本为0;当存在预置舵角时,随着预置舵角的增大,轴向力和侧向力不断增加;预置舵角可以控制超空泡航行体的弹道水平机动转弯,且预置舵角越大、弹道越容易转弯,但舵角过大会导致航行体弹道失稳。
The turning maneuver trajectory characteristics of the supercavitating vehicle on the horizontal plane are realized by presetting the rudder angles in the head of supercavitating vehicle,and the free motion of vehicle at the preset rudder angles of 0°,3°and 6° is investigated in experiment. The experiment is done in a pool. The eveluationary process of cavity is observed by using a high-speed video camera,the motion parameters of vehicle are measured using a built-in measuring device,and the turning maneuver trajectory characteristics of supercavitating vehicle on the horizontal plane at different preset rudder angles are acquired. The experimental results show that the side force of vehicle shows a small fluctuation due to the perturbation of the unsteady factors when the preset rudder angle is 0°,but the average value is basically 0. When the preset rudder angle exists,the axial and side forces increase with the increase in the preset rudder angle. The preset rudder angle can be used to control the horizontal turning maneuver of supercavitating vehicle. The larger the preset rudder angle is,the easier the turning maneuver is,but an overlarge preset rudder angle may cause the trajectory destabilization.
出处
《兵工学报》
EI
CAS
CSCD
北大核心
2017年第10期1974-1979,共6页
Acta Armamentarii
基金
国家自然科学基金项目(11602260)
关键词
流体力学
超空泡航行体
预置舵角
机动转弯
弹道
试验研究
fluid mechanics
supercavitating vehicle
preset rudder angle
turning maneuver
trajecto-ry
experimental study
