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为改善内埋弹舱的流场特性以及内埋武器分离特性,采用在弹舱前缘悬细金属条的方法对弹舱流场进行流动控制,并在高速风洞中进行了试验研究。通过分析舱底静态压力试验结果以及脉动压力试验结果,研究了武器模型处于不同分离位置时流动控制对弹舱流场特性的影响;通过测量武器模型力和力矩,研究了流动控制对武器分离特性的影响。研究结果表明:武器模型处于不同分离位置时,该流动控制方法对弹舱底部静态压力分布以及总声压级分布的影响是相似的;当弹舱的流场类型为过渡/闭式穴流动时,采用该流动控制措施能有效降低舱内的静态压力梯度,并能有效改善武器的分离特性;当弹舱的流场类型为开式穴流动时,采用该流动控制措施能有效抑制舱内产生的气动噪声。
In order to improve the flow field characteristics of buried bomb bay and the separation characteristics of embedded weapons, flow field control of the flow field of the bomb bay was carried out by the method of suspending metal strips at the leading edge of the bomb bay and the experimental study was conducted in the high speed wind tunnel. By analyzing the results of bilge static pressure test and pulsating pressure test, the influence of flow control on the flow field characteristics of the cargo hold when the weapon model is in different separation positions is studied. By measuring the force and moment of the weapon model, the effects of flow control on the separation characteristics of the weapon Impact. The results show that the effect of the flow control method on the static pressure distribution and the distribution of total sound pressure level at the bottom of the bomb is similar when the weapon model is in different separation positions. When the flow field of the bomb cabin is in the transition / closed-hole flow , The flow control measures can effectively reduce the static pressure gradient inside the cabin and can effectively improve the separation characteristics of the weapons. When the flow field of the cabin is open-hole, the flow control measures can effectively inhibit the generation of the cabin Of the aerodynamic noise.