高超声速飞行器的动态热密封技术研究进展  

Research Progress of Dynamic Thermal Sealing Technology For Hypersonic Vehicle

作　　者：罗艺 牛波 张亚运 龙东辉[1] LUO Yi;NIU Bo;ZHANG Yayun;LONG Donghui(East China University of Science and Technology,Shanghai 200237)

机构地区：[1]华东理工大学,上海200237

出　　处：《宇航材料工艺》2024年第3期11-21,共11页Aerospace Materials & Technology

摘　　要：高马赫数飞行带来的气动热一直是制约飞行器向更大速域和空域发展的最大因素,特别是针对飞行器发动机尾喷管和机体之间、飞行器尾翼控制舵等有较大动态间隙部位,对其进行动态热密封的技术难度也远高于一般的机身表面防热;因此,动态热密封技术成为各国在新型高超声速空天飞行器发展中需要突破的重要瓶颈。本文以X-38等飞行器为例,对国外动态热密封技术进行了简要介绍,并对其主要技术类型和关键性能测试方法进行综述,最后对动态热密封技术的发展进行了总结和展望。Aerodynamic heating caused by high Mach number flight has always been the major factor that restricts the development of aircrafts to higher speed ranges and airspaces.In particular,parts with large dynamic clearance between the engine nozzle and fuselage,and the control rudder of the tail wing,pose a technical challenge for dynamic thermal sealing more difficult than fuselage surface heat protection.Hence,dynamic thermal sealing technology is a critical bottleneck for developing new hypersonic space vehicles.This paper surveys the foreign dynamic thermal sealing technology with examples of X-38 and other aircrafts,reviews its main technical categories and key performance test methods,and finally offers a summary and future outlook on the development of dynamic thermal sealing technology.

关 键 词：动态热密封 弹簧管密封 陶瓷片密封 密封件测试 热防护技术 高超声速飞行器 

分 类 号：V25[一般工业技术—材料科学与工程]