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[1]李小平,唐 敏,肖 虹.加热器燃料对冲压发动机模拟来流的影响[J].火箭推进,2019,45(06):45-52.
　LI Xiaoping,TANG Min,XIAO Hong.Effect of heater fuel on simulated incoming flow of ramjet[J].Journal of Rocket Propulsion,2019,45(06):45-52.
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加热器燃料对冲压发动机模拟来流的影响

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V] 卷: 45 期数: 2019年06期 页码: 45-52 栏目: 研究与技术 出版日期: 2019-12-25
Title:
Effect of heater fuel on simulated incoming flow of ramjet
文章编号:
1672-9374(2019)06-0045-08
作者:
李小平1; 唐 敏2; 肖 虹2
(1.西北工业大学,陕西 西安 710072; 2.西安航天动力研究所,陕西 西安 710100)
Author(s):
LI Xiaoping1;  TANG Min2;  XIAO Hong2
(1.Northwest Poly-technology University, Xi’an 710072, China; 2.Xi’an Aerospace Propulsion Institute, Xi’an 710100, China)
关键词:
冲压发动机;  地面试验;  加热器;  模拟来流;  燃料选择
Keywords:
ramjet;  ground test;  heater;  simulated incoming flow;  fuel selection
分类号:
V439
文献标志码:
A
摘要:
依据冲压发动机典型状态地面试验模拟问题,地面试验系统只能采用加热器直接燃烧化学燃料的方式来提供高温、高压和大流量的热空气。为了研究加热器燃料对发动机试验的模拟来流特性的影响,通过对常用5种加热器燃料进行热力计算,对比分析了补氧和无补氧时加热器燃料对模拟气流成分的影响,结果表明:在补氧和无补氧条件下,常用燃料生成模拟空气的比热比均小于真实值; 马赫数2.5～3时选择酒精和异丁烷为燃料生成模拟空气的分子量与真实值较接近,马赫数3.5～4时选择酒精与真实值较接近; 补氧的加热器可大幅降低模拟空气中的污染成分。
Abstract:
Based on the ground test simulation problem of typical state of ramjet engine, the ground test system can only provide the hot air with high temperature, high pressure and large flow rate by burning chemical fuel directly in heater.In order to study the effect of heater fuel on the simulated incoming flow characteristics in the engine test, the effect of heater fuel on the simulated airflow composition with/without oxygen supplement were compared and analyzed through the thermodynamic calculation of five kinds of heater fuel.The results show that the specific heat ratio of simulated gas generated by commonly used fuels is less than the true value under the conditions of oxygen supplementation and no oxygen supplementation.When the Mach number is 2.5～3, the molecular weight of simulated gas generated by alcohol or isobutane is close to the true value, while the Mach number is 3.5～4, the alcohol is selected to be close to the true value.The heater with oxygen-supplement can significantly reduce the pollution components in the simulated gas.

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备注/Memo

收稿日期:2017-10-25; 修回日期:2018-01-15基金项目:国家自然科学基金(11702205)作者简介:李小平(1973—),男,博士,研究员,研究领域为液体火箭发动机热结构和冲压地面试验技术

更新日期/Last Update: 2019-12-20