半柔壁喷管初步实验研究  

The primary experimental research on the aerodynamic designing of semi-flexible nozzle

作　　者：彭强[1] 廖达雄[1] 秦红岗[1] 易星佑[1] 

机构地区：[1]中国空气动力研究与发展中心空气动力学国家重点实验室,四川绵阳621000

出　　处：《实验流体力学》2012年第3期101-106,共6页Journal of Experiments in Fluid Mechanics

基　　金：空气动力学国家重点实验室基金(SKLA2009A0103);国防科学技术预先研究空动力学项目(513130602)

摘　　要：为了验证跨超声速风洞半柔壁喷管的气动设计结果,在试验平台上经过对喷管的动调,完成了半柔壁喷管的性能测试研究。得到如下初步结论:所使用的半柔壁喷管气动设计方法有效可行,马赫数调节范围及喷管流场均匀性指标达到设计要求;通过对喷管的动调,喷管第一菱形区的马赫数均方根偏差可降低30%～40%;在风洞吹风过程中,可实现喷管马赫数的连续变化功能,在喷管型面调节速度适当时,试验段流场均匀性指标与喷管固定型面时相当。To verify the aerodynamic design of semi-flexible nozzle in supersonic wind tunnel, the evaluation experiments were accomplished in the test. The conclusions have been drawn that the engineering design methods to semi-flexible nozzle has been demonstrated. The range of Mach number of semi-flexible nozzle and uniformity of velocity in test section have met the requirements of this project. The mean square root of Mach number may be cut off by 30% to 40% through the dynamic debugging to the semi-flexible nozzle. The capability of changing Mach number continuously during operation of wind tunnel has come true.

关 键 词：试验研究 超声速风洞 流场品质 半柔壁喷管 喷管设计 

分 类 号：V211.754[航空宇航科学与技术—航空宇航推进理论与工程]