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In response to the multiple ignition requirement of the expander cycle hydrogen-oxygen engine, research on the torch ignition system scheme is conducted, and a relatively reasonable low-pressure torch ignition system scheme is identified. The results show that the mixing ratio of the torch igniter fluctuated greatly when opening the hydrogen main valve, which may cause structural ablation. The scheme of introducing hydrogen from the inlet of the hydrogen turbine and liquid oxygen from the outlet of the liquid oxygen pump has a lower ablation risk, but it has a certain impact on the engine's start-up and steady-state characteristics. The low-pressure torch ignition start-up tests of liquid rocket engine are carried out for the first time in China. The experimental results verify the simulation results, and indicating the feasibility of the scheme.
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针对膨胀循环氢氧发动机多次点火需求,开展了火炬式电点火系统方案论证和仿真研究,明确了较为合理的低压火炬式电点火系统方案,并完成整机级试验验证。结果表明,氢主阀打开瞬间点火室混合比波动较大,可能造成结构烧蚀;从氢涡轮前引气氢、氧泵后引液氧的方案烧蚀风险较小,但对发动机起动和稳态特性有一定影响。试验验证了仿真分析结果,实现了中国液体火箭发动机首次低压火炬式电点火起动,初步表明点火系统方案可行。
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李锦江(1986—),男,博士研究生,研究员,主要研究方向为低温液体火箭发动机总体技术。
刘恒(1989—),男,高级工程师,主要研究方向为低温液体火箭发动机涡轮泵技术。
刘登丰(1980—),男,研究员,主要研究方向为低温液体火箭发动机总体技术。
褚宝鑫(1977—),男,研究员,主要研究方向为低温液体火箭发动机总体技术、涡轮泵技术。
张楠(1960—),男,博士,研究员,主要研究方向为液体火箭发动机总体技术、故障诊断技术。
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李锦江(1986—),男,博士研究生,研究员,主要研究方向为低温液体火箭发动机总体技术。
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李锦江(1986—),男,博士研究生,研究员,主要研究方向为低温液体火箭发动机总体技术。
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刘恒(1989—),男,高级工程师,主要研究方向为低温液体火箭发动机涡轮泵技术。
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刘恒(1989—),男,高级工程师,主要研究方向为低温液体火箭发动机涡轮泵技术。
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刘登丰(1980—),男,研究员,主要研究方向为低温液体火箭发动机总体技术。
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刘登丰(1980—),男,研究员,主要研究方向为低温液体火箭发动机总体技术。
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褚宝鑫(1977—),男,研究员,主要研究方向为低温液体火箭发动机总体技术、涡轮泵技术。
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褚宝鑫(1977—),男,研究员,主要研究方向为低温液体火箭发动机总体技术、涡轮泵技术。
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张楠(1960—),男,博士,研究员,主要研究方向为液体火箭发动机总体技术、故障诊断技术。
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2021., articleTitle=null, refAbstract=null)], funds=[Fund(id=1197272970340122808, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, awardId=050106, language=CN, fundingSource=民用航天技术预先研究项目(050106), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1197272959703367802, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, xref=1, ext=[AuthorCompanyExt(id=1197272959711756411, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, companyId=1197272959703367802, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1北京航天动力研究所,北京,100076)]), AuthorCompany(id=1197272959925665917, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, xref=2, ext=[AuthorCompanyExt(id=1197272959934054526, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, companyId=1197272959925665917, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2中国航天科技集团有限公司低温液体推进技术实验室,北京,100076)])], figs=[ArticleFig(id=1197272966758187174, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 1, caption=
Simulation model of torch ignition and start-up process for expander cycle engine, figureFileSmall=bn+eaePkFEBB8SXun/AH5A==, figureFileBig=zlnggs9Oe+16BEEMtJm2HQ==, tableContent=null), ArticleFig(id=1197272966959513767, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图1, caption=
膨胀循环发动机火炬点火起动过程仿真模型, figureFileSmall=bn+eaePkFEBB8SXun/AH5A==, figureFileBig=zlnggs9Oe+16BEEMtJm2HQ==, tableContent=null), ArticleFig(id=1197272967316029608, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 2, caption=
Comparison between simulation and test results of pyro ignition, figureFileSmall=TpdogJHwmyYPNkWlcivIBQ==, figureFileBig=R8HmRjNdsyFVbr1vTcKaow==, tableContent=null), ArticleFig(id=1197272967550910633, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图2, caption=
火药点火起动仿真与试验结果比对, figureFileSmall=TpdogJHwmyYPNkWlcivIBQ==, figureFileBig=R8HmRjNdsyFVbr1vTcKaow==, tableContent=null), ArticleFig(id=1197272967714488490, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 3, caption=
Simulation results of the low-pressure torch ignition and start-up process, figureFileSmall=UQxDFBPWc56lM1L6crqkWw==, figureFileBig=b0uDMRprlznCPmSAcR+TXw==, tableContent=null), ArticleFig(id=1197272967844511915, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图3, caption=
低压火炬点火起动过程仿真结果, figureFileSmall=UQxDFBPWc56lM1L6crqkWw==, figureFileBig=b0uDMRprlznCPmSAcR+TXw==, tableContent=null), ArticleFig(id=1197272967966146732, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 4, caption=
Schematic of the low-pressure torch igniter for expander cycle engine, figureFileSmall=G0K7cfsHpdljWOOsyEYsyA==, figureFileBig=BabAaZXHR7ykPoENAk5Q8Q==, tableContent=null), ArticleFig(id=1197272968138113197, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图4, caption=
膨胀循环氢氧发动机低压火炬式电点火系统原理, figureFileSmall=G0K7cfsHpdljWOOsyEYsyA==, figureFileBig=BabAaZXHR7ykPoENAk5Q8Q==, tableContent=null), ArticleFig(id=1197272968343634094, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 5, caption=
Photos of test products (left: torch igniter; right: electric ignition device), figureFileSmall=tOzNRG4VzhX0S6XBEPZAqQ==, figureFileBig=YnK7s2vI+2xMxzFx65ZSRA==, tableContent=null), ArticleFig(id=1197272968444297391, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图5, caption=
试验产品照片(左:火炬点火室;右:电点火装置), figureFileSmall=tOzNRG4VzhX0S6XBEPZAqQ==, figureFileBig=YnK7s2vI+2xMxzFx65ZSRA==, tableContent=null), ArticleFig(id=1197272968570126512, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Fig. 6, caption=
Comparison between torch ignition and pyro ignition test results, figureFileSmall=H5AHeGtN//z9xkchzPEDtg==, figureFileBig=N8MVGH73eNIs4XDSp/U5QQ==, tableContent=null), ArticleFig(id=1197272968691761329, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=图6, caption=
整机级火炬点火与火药点火试验结果比对, figureFileSmall=H5AHeGtN//z9xkchzPEDtg==, figureFileBig=N8MVGH73eNIs4XDSp/U5QQ==, tableContent=null), ArticleFig(id=1197272968851144882, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Tab. 1, caption=
Parameters of the igniter injectors and throttling elements, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 氢引出位置 | 气氢压力/ MPa | 氢温度/K | 氢节流元件尺寸/mm | 氢喷嘴尺寸/mm | 氧引出位置 | 液氧压力/ MPa | 液氧温度/ K | 氧节流元件尺寸/mm | 氧喷嘴尺寸/mm |
|---|
| 1 | 氢泵后 | 0.4 | 21 | 0.835 | 1.135 | 氧泵后 | 0.4 | 90 | 0.585 | 0.795 |
| 2 | 氢涡轮前 | 0.4 | 260 | 3.577 | 5.126 |
| 3 | 氧涡轮前 | 0.4 | 260 | 3.577 | 5.126 |
| 4 | 氢主阀前 | 0.4 | 260 | 3.577 | 5.126 |
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不同方案火炬式电点火系统喷嘴及节流元件尺寸, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 氢引出位置 | 气氢压力/ MPa | 氢温度/K | 氢节流元件尺寸/mm | 氢喷嘴尺寸/mm | 氧引出位置 | 液氧压力/ MPa | 液氧温度/ K | 氧节流元件尺寸/mm | 氧喷嘴尺寸/mm |
|---|
| 1 | 氢泵后 | 0.4 | 21 | 0.835 | 1.135 | 氧泵后 | 0.4 | 90 | 0.585 | 0.795 |
| 2 | 氢涡轮前 | 0.4 | 260 | 3.577 | 5.126 |
| 3 | 氧涡轮前 | 0.4 | 260 | 3.577 | 5.126 |
| 4 | 氢主阀前 | 0.4 | 260 | 3.577 | 5.126 |
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Influence of torch ignition on start-up and steady characteristics, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 起动加速性t90/s | ${t}_{90}$相对变化量/% | 稳态室压相对变化量/% | 稳态混合比相对变化量/% | 稳态氢涡轮泵转速相对变化量/% |
|---|
| 对照 | 1.639 | 0 | 0 | 0 | 0 |
| 方案1 | 1.648 | 0.55 | -0.26 | 0.19 | -0.22 |
| 方案2 | 1.674 | 2.14 | -3.50 | 0.18 | -2.57 |
| 方案3 | 1.621 | -1.10 | 0.29 | -0.47 | 0.51 |
| 方案4 | 1.636 | -0.18 | -0.02 | 0.34 | 0.01 |
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火炬点火对发动机起动和稳态特性的影响, figureFileSmall=null, figureFileBig=null, tableContent=
| 方案 | 起动加速性t90/s | ${t}_{90}$相对变化量/% | 稳态室压相对变化量/% | 稳态混合比相对变化量/% | 稳态氢涡轮泵转速相对变化量/% |
|---|
| 对照 | 1.639 | 0 | 0 | 0 | 0 |
| 方案1 | 1.648 | 0.55 | -0.26 | 0.19 | -0.22 |
| 方案2 | 1.674 | 2.14 | -3.50 | 0.18 | -2.57 |
| 方案3 | 1.621 | -1.10 | 0.29 | -0.47 | 0.51 |
| 方案4 | 1.636 | -0.18 | -0.02 | 0.34 | 0.01 |
), ArticleFig(id=1197272969748725942, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=EN, label=Tab. 3, caption=
Experimental parameters and results of low-pressure torch ignition, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验序号 | 试验类型 | 试验工况 | 氢泵入口压力/MPa | 氧泵入口压力/MPa | 点火器总混合比 | 试验结果 |
|---|
| 1 | 火炬点火分系统试验 | 额定混合比 | 0.314 | 0.332 | 2.32 | 成功、无烧蚀 |
| 2 | 高混合比 | 0.162 | 0.400 | 6.50 | 成功、无烧蚀 |
| 3 | 低混合比 | 0.365 | 0.161 | 0.82 | 成功、无烧蚀 |
| 4 | 推力室点火试验 | 额定混合比 | 0.314 | 0.284 | 1.70 | 成功、无烧蚀 |
| 5 | 高混合比 | 0.167 | 0.345 | 5.35 | 推力室点火失败 |
| 6 | 高混合比 | 0.204 | 0.341 | 3.89 | 推力室点火失败 |
| 7 | 高混合比 | 0.250 | 0.353 | 2.36 | 成功、无烧蚀 |
| 8 | 低混合比 | 0.365 | 0.154 | 0.84 | 成功、无烧蚀 |
| 9 | 整机点火起动试验 | 额定混合比 | 0.208 | 0.279 | 1.73 | 成功、无烧蚀起动后2s关机 |
), ArticleFig(id=1197272969903915191, tenantId=1146029695717560320, journalId=1146119989267898375, articleId=1148011782288958388, language=CN, label=表3, caption=
低压火炬点火试验参数及结果, figureFileSmall=null, figureFileBig=null, tableContent=
| 试验序号 | 试验类型 | 试验工况 | 氢泵入口压力/MPa | 氧泵入口压力/MPa | 点火器总混合比 | 试验结果 |
|---|
| 1 | 火炬点火分系统试验 | 额定混合比 | 0.314 | 0.332 | 2.32 | 成功、无烧蚀 |
| 2 | 高混合比 | 0.162 | 0.400 | 6.50 | 成功、无烧蚀 |
| 3 | 低混合比 | 0.365 | 0.161 | 0.82 | 成功、无烧蚀 |
| 4 | 推力室点火试验 | 额定混合比 | 0.314 | 0.284 | 1.70 | 成功、无烧蚀 |
| 5 | 高混合比 | 0.167 | 0.345 | 5.35 | 推力室点火失败 |
| 6 | 高混合比 | 0.204 | 0.341 | 3.89 | 推力室点火失败 |
| 7 | 高混合比 | 0.250 | 0.353 | 2.36 | 成功、无烧蚀 |
| 8 | 低混合比 | 0.365 | 0.154 | 0.84 | 成功、无烧蚀 |
| 9 | 整机点火起动试验 | 额定混合比 | 0.208 | 0.279 | 1.73 | 成功、无烧蚀起动后2s关机 |
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