次流通道对双喉道气动矢量喷管的性能影响研究

推进技术 ›› 2014, Vol. 35 ›› Issue (9): 1174-1180.

次流通道对双喉道气动矢量喷管的性能影响研究

范志鹏,徐惊雷,郭　帅

江苏省航空动力系统重点实验室，南京航空航天大学能源与动力学院，江苏南京 210016;江苏省航空动力系统重点实验室，南京航空航天大学能源与动力学院，江苏南京 210016;江苏省航空动力系统重点实验室，南京航空航天大学能源与动力学院，江苏南京 210016

发布日期:2021-08-15
作者简介:范志鹏(1989—)，男，硕士生，研究领域为内流气体动力学。

Effects of Secondary Injection Pipe on Dual Throat Nozzle Thrust-Vectoring Performances

Jiangsu Province Key Laboratory of Aerospace Power System，College of Energy and Power，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China;Jiangsu Province Key Laboratory of Aerospace Power System，College of Energy and Power，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China;Jiangsu Province Key Laboratory of Aerospace Power System，College of Energy and Power，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Published:2021-08-15

摘要/Abstract

摘要： 为了进一步了解次流通道对双喉道气动矢量喷管(Dual Throat Nozzle，DTN)气动矢量性能的影响，基于二维DTN喷管构型进行了详细的数值模拟研究。结果表明:收扩的次流通道相对于平直的次流通道不会改善DTN喷管的推力矢量性能；随着次流流量增加，DTN的推力矢量角存在一个最大值，超过该值各推力矢量性能均会降低；次流通道宽度对DTN喷管推力矢量性能影响显著:(1)次流宽度不影响所能达到的最大推力矢量角；(2)小的次流宽度在进口总压较高的条件下具有更高的推力矢量角；(3)增大次流宽度能降低次流总压，但达到的矢量角会有所减小。

关键词: 双喉道气动矢量喷管；次流管道；次流百分比；推力矢量性能；数值模拟

Abstract: Numerical studies on 2D dual throat nozzle(DTN) were performed focusing on the secondary injection pipe to get the effects on the DTN’s thrust-vectoring performances. Results show that the secondary injection pipe in the convergence and divergence shape can not improve the DTN’s thrust-vectoring performances compared with the one with parallel pipe. As the mass of secondary injection increases，the DTN’s vector angle has a maximum value and if it is larger than this value，it will lead to the reduction of the DTN’s thrust-vectoring performances. The width of the secondary injection pipe has significant effects on the DTN’s performances.The maximum vector angle of the DTN does not vary in different width of the secondary injection pipe. The DTN can get a larger vector angle with a low mass ratio of the secondary injection when the width of pipe is small，but the total pressure of the secondary injection is relatively high. Increasing the width can reduce the secondary injection total pressure，but the vector angle the DTN can get will be lower.

Key words: Dual Throat Nozzle；Secondary injection pipe；Ratio of secondary injection；Thrust-vectoring performances；Numerical simulation

范志鹏,徐惊雷,郭　帅. 次流通道对双喉道气动矢量喷管的性能影响研究[J]. 推进技术, 2014, 35(9): 1174-1180.

FAN Zhi-peng,XU Jing-lei,GUO Shuai. Effects of Secondary Injection Pipe on Dual Throat Nozzle Thrust-Vectoring Performances[J]. Journal of Propulsion Technology, 2014, 35(9): 1174-1180.

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