火箭强噪声模拟装置辐射器出口形状对远场声特性的影响  

The Effects Created by Different Shapes of Radiator Outlet of Rocket Strong Noise Unit Device on the Characters of the Far Sound Field

作　　者：陈新华[1] 郝健[2] 张攀[2] 陈琳[2] 

机构地区：[1]装备指挥技术学院航天装备系研究生管理大队,北京101416 [2]装备指挥技术学院研究生管理大队,北京101416

出　　处：《科学技术与工程》2011年第25期6118-6121,共4页Science Technology and Engineering

摘　　要：建立了火箭强噪声模拟装置辐射器不同出口形状声辐射器的远声场特性计算模型。仿真分析了被截面积的大小对被截圆形出口声辐射器远声场特性的影响。在不同输入信号频率下,比较分析了圆形和被截圆形出口声辐射器远声场特性,为小型化火箭强噪声模拟装置设计提供理论指导。仿真结果表明,当被截面积较小即圆心到被截边的距离大于某个值时,被截圆形口面声辐射器远场声压和指向性基本不受影响,远声场特性与圆形口面声辐射器一致。The far sound field computing models of acoustic radiator with different shapes of radiator outlet in the rocket strong noise unit device have been created. Effects produced by different cut areas on the far filed acoustic characters of acoustic radiation section have been simulated. With different frequency, the far field characters of the circular outlet and circular outlet with notch are analyzed. It provides theory guides for the design of rocket strong noise unit device. The analysis results indicate that when the distance between the center of the circular radiator and side is larger than the given value, little effects are created on the far field acoustic pressure and radiation pattern, it coordinates with the circular radiator.

关 键 词：火箭 噪声模拟 声辐射器 远声场特性 

分 类 号：V435.23[航空宇航科学与技术—航空宇航推进理论与工程]