本文選題：武器艙　切入點(diǎn)：氣動(dòng)噪聲　出處：《空氣動(dòng)力學(xué)學(xué)報(bào)》2016年01期 　論文類型：期刊論文

【摘要】：針對(duì)飛機(jī)彈艙高強(qiáng)度氣動(dòng)噪聲、內(nèi)埋武器分離安全性等問題,以高速風(fēng)洞動(dòng)靜態(tài)壓力測(cè)量技術(shù)為研究手段,開展了基于脈沖射流激勵(lì)器(Powered Resonance Tubes,PRTB)的武器艙氣動(dòng)噪聲抑制技術(shù)試驗(yàn)研究。試驗(yàn)結(jié)果表明,試驗(yàn)?zāi)Ｐ途哂械湫偷拈_式空腔流動(dòng)特點(diǎn),武器艙內(nèi)部非定常流動(dòng)引起的聲載荷可達(dá)到150dB。PIV試驗(yàn)結(jié)果研究表明空腔前緣布置主動(dòng)脈沖射流激勵(lì)器對(duì)剪切層施加激勵(lì),會(huì)改變武器艙上部剪切層的流動(dòng)特性,對(duì)這種高強(qiáng)度的聲載荷起到一定的抑制作用。
[Abstract]:Aiming at the problems of high-intensity aerodynamic noise of aircraft projectile cabin and the safety of the separation of buried weapons, the dynamic and static pressure measurement technology of high-speed wind tunnel is used as the research means. An experimental study on aerodynamic noise suppression technology of weapon cabin based on pulsed jet actuator powered Resonance tubules has been carried out. The experimental results show that the experimental model has typical characteristics of open cavity flow. The acoustic load caused by unsteady flow in the weapon cabin can reach 150dB.PIV experimental results show that the flow characteristics of the upper shear layer of the weapon cabin can be changed by the excitation of the shear layer by the active pulse jet actuator arranged in the front edge of the cavity. This high intensity of sound load plays a certain role in the suppression.
【作者單位】： 中國航空工業(yè)空氣動(dòng)力研究院高速高雷諾數(shù)氣動(dòng)力航空科技重點(diǎn)實(shí)驗(yàn)室;
【基金】：航空科技重點(diǎn)實(shí)驗(yàn)室基金(20111126003)
【分類號(hào)】：V211.74
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本文編號(hào)：1598787