基于控制壁面压力分布的分级单边膨胀喷管设计及试验验证

推进技术 ›› 2013, Vol. 34 ›› Issue (3): 307-310.

基于控制壁面压力分布的分级单边膨胀喷管设计及试验验证

全志斌,徐惊雷,莫建伟

南京航空航天大学能源与动力学院,江苏南京 210016;南京航空航天大学能源与动力学院,江苏南京 210016;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:全志斌(1989—),男,硕士生,研究领域为内流气体动力学。E-mail:quanzb1919@yeah.net

Design and Experiment Validation of Single Expansion Ramp Nozzle Based on the Control of Wall Pressure Distribution

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Published:2021-08-15

摘要/Abstract

摘要： 提出了基于控制壁面压力分布的分级单边膨胀喷管(SERN)设计思想。在强几何限制条件下,设计了一个基准模型A,与采用分级膨胀思想设计的模型B进行对比。然后,对模型B喷管进行缩比进行了冷流试验,试验与数值模拟结果吻合良好,说明数值模拟结果可靠。模型A与模型B数值模拟的对比结果表明,模型B喷管在推力性能下降很少的前提下,冷热态俯仰力矩差较模型A下降了44.6%,有效减小了飞行器的配平难度,验证了该设计思想的正确性。 

关键词: 单边膨胀喷管;壁面压力分布;推力性能 

Abstract: There is a great change in pitch moment after the ignition of the scramjet, which has a serious impact on the attitude control of the aircraft.Design idea of two-stage-expansion SERN based on the control of wall pressure distribution was presented. Reference model A and comparison model B which is on the basis of two-stage-expansion were designed under strict geometry restricts.Then, cold-flow static testing and numerical simulation were conducted on the scaled model of B,which agreed well, indicating that the result of numerical simulation was reliable.Comparison is made between model A and model B,indicating that pitch moment difference between cold-state and hot-state of model B decreases by 44.6% than that of model A on the premise that thrust performance descends little for Model B, which effectively reduces the difficulty of the balance of aircraft and verifies the correctness of the design idea. 

Key words: Single-expansion-ramp-nozzle；Wall pressure distribution；Thrust performance

全志斌,徐惊雷,莫建伟. 基于控制壁面压力分布的分级单边膨胀喷管设计及试验验证[J]. 推进技术, 2013, 34(3): 307-310.

QUAN Zhi-bin,XU Jing-lei,MO Jian-wei. Design and Experiment Validation of Single Expansion Ramp Nozzle Based on the Control of Wall Pressure Distribution[J]. Journal of Propulsion Technology, 2013, 34(3): 307-310.