Comparative study on the characteristics of energy release, decomposition, and combustion between NEPE propellants and HTPB propellants

IF 5.8 2区工程技术 Q2 ENERGY & FUELS

Combustion and Flame Pub Date : 2024-11-02 DOI:10.1016/j.combustflame.2024.113827

Hui Liu , Fang Wang , Huanhuan Gao , Yukun Chen , Xueqin Liao , Jianzhong Liu

{"title":"Comparative study on the characteristics of energy release, decomposition, and combustion between NEPE propellants and HTPB propellants","authors":"Hui Liu , Fang Wang , Huanhuan Gao , Yukun Chen , Xueqin Liao , Jianzhong Liu","doi":"10.1016/j.combustflame.2024.113827","DOIUrl":null,"url":null,"abstract":"<div><div>Energy performance is always the primary focus of solid propulsion technology development. This paper investigated the characteristics of the energy release, decomposition, and combustion of two typical propellants (NEPE propellants and HTPB propellants) using NASA-CEA calculations, thermal analysis, and an electric wire ignition combustion system. The decomposition temperature of NG, BTTN, GAP, and CL-20 in NEPE propellants were low. The decomposition products were abundant and the decomposition exotherm was large. It had a strong inhibitory effect on LTD of AP and a strong promotional effect on HTD of AP, resulting in the combination of HTD and LTD of AP into a single peak. The flame brightness of two propellants was obviously improved with pressure increasing, as was the flame expansion area, burning rate, and combustion intensity. The ignition delay time <em>t</em><sub>i</sub> decreased and the burning rate <em>r</em> increased. Compared to HTPB propellants, NEPE propellants had brighter flames, larger flame expansion area, more intense combustion, smaller <em>t</em><sub>i,</sub> and smaller <em>r</em> under the same pressure. The pressure exponent n of NEPE propellants (0.43) was larger than that of HTPB propellants (0.39). The rate of the chemical reactions and the rate of diffusion and mixing had a greater impact on the burning rate of NEPE propellants.</div></div>","PeriodicalId":280,"journal":{"name":"Combustion and Flame","volume":"271 ","pages":"Article 113827"},"PeriodicalIF":5.8000,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Combustion and Flame","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0010218024005364","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

Energy performance is always the primary focus of solid propulsion technology development. This paper investigated the characteristics of the energy release, decomposition, and combustion of two typical propellants (NEPE propellants and HTPB propellants) using NASA-CEA calculations, thermal analysis, and an electric wire ignition combustion system. The decomposition temperature of NG, BTTN, GAP, and CL-20 in NEPE propellants were low. The decomposition products were abundant and the decomposition exotherm was large. It had a strong inhibitory effect on LTD of AP and a strong promotional effect on HTD of AP, resulting in the combination of HTD and LTD of AP into a single peak. The flame brightness of two propellants was obviously improved with pressure increasing, as was the flame expansion area, burning rate, and combustion intensity. The ignition delay time t_i decreased and the burning rate r increased. Compared to HTPB propellants, NEPE propellants had brighter flames, larger flame expansion area, more intense combustion, smaller t_i, and smaller r under the same pressure. The pressure exponent n of NEPE propellants (0.43) was larger than that of HTPB propellants (0.39). The rate of the chemical reactions and the rate of diffusion and mixing had a greater impact on the burning rate of NEPE propellants.

查看原文本刊更多论文

NEPE 推进剂与 HTPB 推进剂能量释放、分解和燃烧特性的比较研究

能量性能始终是固体推进技术发展的首要关注点。本文利用 NASA-CEA 计算、热分析和电线点火燃烧系统研究了两种典型推进剂（NEPE 推进剂和 HTPB 推进剂）的能量释放、分解和燃烧特性。NEPE 推进剂中 NG、BTTN、GAP 和 CL-20 的分解温度较低。分解产物丰富，分解放热大。对 AP 的 LTD 有很强的抑制作用，对 AP 的 HTD 有很强的促进作用，导致 AP 的 HTD 和 LTD 合并为一个峰。随着压力的增加，两种推进剂的火焰亮度明显提高，火焰膨胀面积、燃烧速率和燃烧强度也明显提高。点火延迟时间 ti 减小，燃烧速率 r 增加。与 HTPB 推进剂相比，在相同压力下，NEPE 推进剂的火焰亮度更高、火焰膨胀面积更大、燃烧更剧烈、ti 更小、r 更小。NEPE 推进剂的压力指数 n（0.43）大于 HTPB 推进剂的压力指数 n（0.39）。化学反应速率以及扩散和混合速率对 NEPE 推进剂燃烧速率的影响更大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Combustion and Flame 工程技术-工程：化工

CiteScore

9.50

自引率

20.50%

发文量

631

审稿时长

3.8 months

期刊介绍： The mission of the journal is to publish high quality work from experimental, theoretical, and computational investigations on the fundamentals of combustion phenomena and closely allied matters. While submissions in all pertinent areas are welcomed, past and recent focus of the journal has been on: Development and validation of reaction kinetics, reduction of reaction mechanisms and modeling of combustion systems, including: Conventional, alternative and surrogate fuels; Pollutants; Particulate and aerosol formation and abatement; Heterogeneous processes. Experimental, theoretical, and computational studies of laminar and turbulent combustion phenomena, including: Premixed and non-premixed flames; Ignition and extinction phenomena; Flame propagation; Flame structure; Instabilities and swirl; Flame spread; Multi-phase reactants. Advances in diagnostic and computational methods in combustion, including: Measurement and simulation of scalar and vector properties; Novel techniques; State-of-the art applications. Fundamental investigations of combustion technologies and systems, including: Internal combustion engines; Gas turbines; Small- and large-scale stationary combustion and power generation; Catalytic combustion; Combustion synthesis; Combustion under extreme conditions; New concepts.