摘要
针对并联式涡轮基组合循环(TBCC)发动机由于双动力、双通道、几何非对称带来的安装及传力难点,选取燃气涡轮发动机、冲压燃烧室和单边膨胀组合喷管(SERN)3个不同安装单元作为研究对象,根据3个安装单元的连接组合形式以及安装节点不同布置形式,设计了6种安装方案,分析了不同安装方案在机动载荷和气动载荷下的载荷传递特点和规律。结果表明:全浮动与冲压喷管刚性连接方案、全刚性与涡轮喷管刚性连接方案的受力特点相似;全浮动连接方案主安装节受力最大;全刚性方案传力相对全浮动方案的更优,前者相对后者主安装节受力在限制载荷下减小57%,在极限载荷下减小55%;在全刚性方案中,主安装节设置在涡轮单元上比在SREN上更优。
In view of the difficulties in installation and force transmission of over-under TBCC engine due to dual power,dual chan-nel,and geometric asymmetry,three different installation units,namely,Gas turbine,ramjet combustor,and single expansion ramp nozzle(SERN),were selected as the research objects.According to the connection combination form of the three installation units and the different layout forms of installation nodes,six different installation schemes were designed,and the load transfer characteristics and laws of differ-ent installation schemes under maneuver load and aerodynamic load were analyzed.The results show that the mechanical characteristics of the fully flexible scheme and ramjet+SERN rigid connection scheme are similar,so are the fully rigid scheme and turbine+SERN rigid con-nection scheme;The fully flexible scheme has the maximum stress on the main mount;The force transmission of the fully rigid scheme is better than that of the fully flexible scheme.Compared with the latter,the former reduces the force on the main mount by 57%under limited load and 55%under ultimate load;In the fully rigid scheme,the main mount is better placed on the turbine unit than on the SREN.
作者
黄发
兰甫
钟世林
龚晓庆
陈晖
庄福建
HUANG Fa;LAN Fu;ZHONG Shi-lin;GONG Xiao-qing;CHEN Hui;ZHUANG Fu-jian(AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China;Yangzhou Collaborative Innovation Research Institute Co.,Ltd.,AVIC Shenyang Aircraft Design Institute,Yangzhou Jiangsu 225000,China)
出处
《航空发动机》
北大核心
2024年第6期39-47,共9页
Aeroengine
基金
国家级研究项目资助。
