超声速飞行器减阻杆/盘与双喷流组合构型减阻和防热性能  

Drag and heat flux reduction performance of supersonic vehicle withcombination model of aerospike/aerodisk and double jet

作　　者：许阳 陈宣亮 XU Yang;CHEN Xuanliang(Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Chengdu 610500,China)

机构地区：[1]中国航发四川燃气涡轮研究院,成都610500

出　　处：《航空动力学报》2024年第5期208-225,共18页Journal of Aerospace Power

基　　金：173基础加强计划技术领域基金(2021-JCJQ-JJ-0345)。

摘　　要：为降低超声速飞行器的气动力和热载荷,研究一种减阻杆/盘与双喷流组合构型,并采用数值方法分析了几何参数和喷流参数对流场特征以及减阻和防热性能的影响。结果表明:减阻杆长径比对构型的减阻效率影响较小,但对防热效率影响较大;增加减阻盘直径比,构型的减阻效率先增大后减小,防热效率先减小后增大,但当逆向喷流总压较高时,减阻盘直径比对减阻和防热效率的影响均较小;提高逆向喷流总压比,构型的减阻和防热效率一直处于较高水平,且其变化幅度均不明显;提高侧向喷流总压比,构型的减阻和防热效率均增大,减阻效率变化率增大,防热效率变化率减小;侧向喷流出口位置远离钝体头部,减阻效率增大,防热效率减小;适当选取减阻杆/盘与双喷流参数,可达到57.1%的减阻效率,同时防热效率达到100.4%。In order to reduce aerodynamic and thermal loads of the supersonic vehicle,a combination model of aerospike/aerodisk and double jet was studied,and the effects of geometrical parameters and jet parameters on flow field characteristics,drag and heat flux reduction were analyzed numerically.The results showed that:the length-to-diameter ratio of the aerospike had little effect on the drag reduction efficiency of the configuration,but had a great effect on the heat flux reduction efficiency.When the diameter ratio of the aerodisk increased,the drag reduction efficiency of the configuration increased first and then decreased,and the heat flux reduction efficiency decreased first and then increased.However,when the total pressure of the opposing jet was high,the diameter ratio of aerodisk had little effect on the drag and heat flux reduction efficiency.When the total pressure ratio of the opposing jet increased,the drag and heat flux reduction efficiency of the configuration was kept at a high level,and the variation range was not obvious.When the total pressure ratio of the lateral jet increased,both the drag and heat flux reduction efficiency of the configuration increased,and the change rate of the drag reduction efficiency increased,while the change rate of the heat flux reduction efficiency decreased.The location of the lateral jet was far away from the blunt body,which increased the drag reduction efficiency and decreased the heat flux reduction efficiency.The drag reduction efficiency of 57.1%and heat flux reduction efficiency of 100.4% can be achieved by properly selecting the aerospike/aerodisk and double jetparameters.

关 键 词：超声速流动 减阻盘 喷流 气动减阻 气动防热 

分 类 号：V423.6[航空宇航科学与技术—飞行器设计]