内埋武器舱关键气动及声学问题研究

发布时间：2018-01-23 12:46

本文关键词： 内埋武器舱气动噪声压力梯度武器分离特性声压级质量射流　出处：《空气动力学学报》2016年04期 　论文类型：期刊论文

【摘要】：以风洞试验为手段,在高速风洞中对内埋武器舱关键气动问题进行了深入研究。利用静态压力测量、脉动压力测量、网格测力等测试手段,获取了典型弹舱流场静压分布特性、气动声学特性以及武器分离特性。研究结果表明:舱内静压分布变化明显,可以此定义弹舱流场类型;开式弹舱流场气动声学环境恶劣,总声压级强度可达170dB以上,且频谱曲线上存在多个明显的能量尖峰;武器从舱内分离过程中可能产生较大的抬头力矩,影响机/弹安全分离;在弹舱前缘施以流动控制能降低舱内静压梯度、抑制气动噪声,且有利于改善武器分离特性。
[Abstract]:By means of wind tunnel test, the key aerodynamic problems of buried weapon cabin in high speed wind tunnel are studied in depth. The static pressure measurement, pulsating pressure measurement, grid force measurement and so on are used. The hydrostatic pressure distribution, aerodynamic acoustics and weapon separation characteristics of typical projectile tank flow field are obtained. The results show that the hydrostatic pressure distribution in the cabin changes obviously, which can be used to define the missile tank flow field type. The aerodynamic acoustical environment of the open chamber flow field is bad, the total sound pressure level intensity can reach more than 170 dB, and there are many obvious energy spikes on the spectrum curve. In the process of weapon separation from the cabin, a large lift moment may be produced, which will affect the safe separation of aircraft / bomb. The flow control in the front edge of the projectile cabin can reduce the static pressure gradient, suppress the aerodynamic noise, and improve the separation characteristics of the weapon.
【作者单位】：空气动力学国家重点实验室;中国空气动力研究与发展中心;
【分类号】：V211.74
【正文快照】： 0引言为了提高作战半径及突防能力,先进飞行器往往把高速与隐身作为其重要技战指标,而为了实现上述指标,飞行器所携带的武器通常会采用内埋式装载方式,如美国的F-22/F-35、俄罗斯的T-50以及中国的歼-20等均采用了内埋式武器装载方式。武器内埋式装载在带来显著收益的同时也引

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