内埋武器舱舱门开闭动态模拟试验技术研究

Investigation on dynamic simulation technology of internal weapons bay's doors opening and closing

在高速风洞中对内埋武器舱舱门开闭动态模拟试验技术进行了研究,弹舱长深比(L/D)为6.5。分析了舱门开闭动态试验风洞模拟准则,研制了气缸驱动和电机驱动两种舱门开闭运动机构,发展了舱门开闭动态试验测试技术与数据处理方法,获得了舱门运动特性及武器舱系统动态载荷特性。本文给出了Ma=0.6,Re=1.28×107/m的试验结果。研究结果表明:运动机构设计合理,气缸驱动与电机驱动两种方式均可实现舱门的快速开闭运动,采用电机驱动时,舱门运动速度可在较宽范围内调节;测试系统可靠,可准确获得高速气流条件下舱门开闭过程中的动态载荷及舱门运动规律;数据处理方法可行,获得了测点的能量分布特性及频谱特性,并对弹舱流场及舱门动态载荷特性进行了研究。

An investigation on the dynamic simulation technology of internal weapons bay’s doors opening and closing was conducted in a high speed wind tunnel.The ratio of internal weap-ons bay length to depth is 6.5.The doors opening and closing dynamic test simulation criteria is analyzed in depth in this paper.The cylinder driven and motor driven institutions were developed to realize the motion of internal weapons bay’s doors.Measurement techniques and data process-ing methods of this dynamic test were investigated,so that the motion characteristics of the doors and the dynamic loads of internal weapons bay system can be recorded and analyzed well and tru-ly.This paper presents the test results for Mach number of 0.6 and the Reynolds number of 1.28 ＆#215; 10 7/m.The results show that the designs of the motion institutions are reasonable and both the cylinder driven and the motor driven institutions can achieve rapid opening and closing motion of the doors.The motion velocity can be adjusted over a large scale by using motor driven devices.The measurement system is reliable which can obtain dynamic loads and motion characteristics of the doors accurately under subsonic,transonic and supersonic conditions.Data processing method is feasible,the energy distribution characteristics and spectral characteristics were obtained by using this method and the flow field and the bay doors dynamic load characteristics were studied.