Propellants, Explosives, Pyrotechnics最新文献_第10页

Light transmittance measurement method of solid rocket motor plume based on laser modulation spectrum analysis 基于激光调制光谱分析的固体火箭发动机烟羽透光率测量方法

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-01-04 DOI: 10.1002/prep.202300224

Bin Yang, Mingchun Ye, Kejie Qiang, Jinxin Tao, Sihua Chen, Jiahui Chen, Zhixin Wang

{"title":"Light transmittance measurement method of solid rocket motor plume based on laser modulation spectrum analysis","authors":"Bin Yang, Mingchun Ye, Kejie Qiang, Jinxin Tao, Sihua Chen, Jiahui Chen, Zhixin Wang","doi":"10.1002/prep.202300224","DOIUrl":"https://doi.org/10.1002/prep.202300224","url":null,"abstract":"The light transmittance measurement method, which is used to characterize smoke characteristic signal of solid rocket motor plume, can provide important reference for development and design of low smoke characteristic signal solid propellants and motors. The light transmittance measurement method of solid rocket motor plume based on laser modulation spectrum analysis is proposed in this paper. By using a 405 nm laser as the light source and a narrow-band filter detection method, the influence of plume radiation on the measurement of light transmittance of solid rocket motor plume smoke can be minimized. Additionally, combined with the laser modulation spectrum analysis technology, the signal amplitude is selected by the laser modulation frequency to improve the signal-to-noise ratio of the signal. Compared with the laser constant current measuring mode, laser high-frequency modulation measuring mode with spectrum analysis effectively improves the optical transmittance measurement accuracy. Based on this, a solid rocket motor plume smoke transmittance test system is developed to measure the plume smoke of standard test motors with different propellants and combustion chamber pressures. The results demonstrate that the system can effectively measure the light transmittance of the plume smoke. The light transmittance of solid rocket motor plume can be increased by reducing the aluminum content of solid propellant or increasing the pressure of the combustion chamber. Thus, this research provides an effective measuring tool for evaluating smoke concentration of solid rocket motor plume, which is beneficial to develop low smoke characteristic signal solid propellants and motors.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"74 3 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139373993","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

3,5-dinitro-N2,N6-bis(2,4,6-trinitrophenyl)pyrazine-2,6-diamine (ZXC-71): Thermally stable explosives with outstanding properties 3,5-二硝基-N2,N6-双(2,4,6-三硝基苯基)吡嗪-2,6-二胺（ZXC-71）：性能卓越的热稳定炸药

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2024-01-04 DOI: 10.1002/prep.202300180

Xingcheng Zhang, Yanyan Li, Sitong Lu, Aoqi Xi, Qiuju Zhou, Luyao Chen

引用次数: 0

TATB thermal decomposition: An improved kinetic model for explosive safety analysis TATB 热分解：用于爆炸安全分析的改进动力学模型

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-20 DOI: 10.1002/prep.202300237

Jason S. Moore, Keith D. Morrison, Alan K. Burnham, A. Racoveanu, John G. Reynolds, B. Koroglu, K. Coffee, Gregory L. Klunder

{"title":"TATB thermal decomposition: An improved kinetic model for explosive safety analysis","authors":"Jason S. Moore, Keith D. Morrison, Alan K. Burnham, A. Racoveanu, John G. Reynolds, B. Koroglu, K. Coffee, Gregory L. Klunder","doi":"10.1002/prep.202300237","DOIUrl":"https://doi.org/10.1002/prep.202300237","url":null,"abstract":"We investigate and model the cook‐off behavior of 1,3,5‐triamino‐2,4,6‐trinitrobenzene (TATB) to understand the response of explosive systems in abnormal thermal environments. Decomposition has been explored via conventional ODTX (one‐dimensional time‐to‐explosion), PODTX (ODTX with pressure‐measurement), PyGC‐MS (pyrolysis gas chromatography mass spectrometry), TGA (thermo‐gravimetric analysis), DSC (differential scanning calorimetry), and IR (infrared spectroscopy) experiments under isothermal and ramped temperature profiles. The data were used to fit rate parameters for proposed reaction schemes in a MATLAB thermo‐chemical computational model. These parameterizations were carried out utilizing a genetic algorithm optimization method on LLNL's high‐performance computing clusters, which enabled significant parallelization. These results include a multi‐step reaction decomposition model, identification of likely autocatalytic gas‐phase species, accurate high‐temperature sensitization, and prediction of confined system pressurization. This model will be scalable to several applications involving TATB‐based explosives, like LX‐17, including thermal safety models of full‐scale systems.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"20 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138994328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on the safety and mechanical properties of a new tetrazole-based energetic material 新型四氮唑基能量材料的安全性和机械性能研究

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-14 DOI: 10.1002/prep.202300208

Liang-Liang Zhang, Qi-Xuan Du, Lu Zhang, Zhi-Wen Ye, Hua Qian

{"title":"Study on the safety and mechanical properties of a new tetrazole-based energetic material","authors":"Liang-Liang Zhang, Qi-Xuan Du, Lu Zhang, Zhi-Wen Ye, Hua Qian","doi":"10.1002/prep.202300208","DOIUrl":"https://doi.org/10.1002/prep.202300208","url":null,"abstract":"DTDA-THA (tris(hydrazin-1-ium)5,5′-(hydrazin-1-ide-1,2-diylbis((1H-tetrazole-5,1-diyl)))bis(tetrazol-2-ide)) is a novel type of poly-nitrogen energetic material characterized by high nitrogen content, high enthalpy of formation, and low sensitivity. To research the application of DTDA-THA in polymer-bonded explosives (PBXs) and improve the safety performance of DTDA-THA in composite explosives, this study calculated the binding energies between ethylene-vinyl acetate copolymer (EVA), polyvinyl butyral (PVB), polyvinyl acetate (PVAc) and DTDA-THA via density functional theory, respectively. Three types of PBXs molding powders were prepared through the direct method. For further investigation, the moisture absorption of molding powders, the forming density, and the compressive strength of the grains under different binders were characterized. The result of the simulation shows higher binding energy between the crystal surface (2 −1 2) and different binders. The comprehensive order of the binding energies between different binders and the crystal surface of DTDA-THA was DTDA-THA@EVA>DTDA-THA@PVB>DTDA-THA@PVAc. The experimental results show that the addition of binder reduced the hygroscopicity of DTDA-THA and improved the sensitivity and mechanical properties of the molding powders. Under the same binder proportion, the formulation prepared by PVAc had a higher molding density, while the formulation prepared by PVB exhibited the best compressive strength.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"101 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

UXO and environmental risk factors impacting EOD operations in German waters** 影响德国水域爆炸物处理行动的未爆弹药和环境风险因素**

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-12 DOI: 10.1002/prep.202300206

Torsten Frey

{"title":"UXO and environmental risk factors impacting EOD operations in German waters**","authors":"Torsten Frey","doi":"10.1002/prep.202300206","DOIUrl":"https://doi.org/10.1002/prep.202300206","url":null,"abstract":"This article presents risk factors that are associated with the handling of unexploded ordnance (UXO) during explosive ordnance disposal (EOD) operations in German waters. The construction of offshore wind parks and the German immediate action program are expected to increase the number of EOD operations. Existing literature and guidelines do not offer a structured and reproducible framework for assessing EOD risk. To fill this gap, a network of EOD risk factors was developed by means of a literature review and validation via expert consultation. The study was scoped to “personnel and equipment at the EOD location” as the risk receptor and “undesired detonation” as the undesired event under investigation. Factors are subdivided into UXO factors that depend on the object that should be handled and factors that describe the object's surrounding environment. While the former can be researched by an EOD expert, the latter must be measured on site or acquired from a model. Each of these factors contributes to risk, some directly and others indirectly via other factors. The complexity of the resulting network, with its 33 factors, demonstrates the need for a reliable and reproducible model to quantify EOD risk. Its purpose is not to replace EOD experts but to aid them in their decision-making process. Such a tool can provide valuable support for the high-cost and high-risk EOD operations.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"40 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Shear creep analysis of solid rocket motor bonding interface and rapid prediction model** 固体火箭发动机结合界面的剪切蠕变分析和快速预测模型**

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-12 DOI: 10.1002/prep.202300070

Guanlin Ye, Kuangwei Deng, Weijing Wu, Dong Yang, Zhibin Shen

{"title":"Shear creep analysis of solid rocket motor bonding interface and rapid prediction model**","authors":"Guanlin Ye, Kuangwei Deng, Weijing Wu, Dong Yang, Zhibin Shen","doi":"10.1002/prep.202300070","DOIUrl":"https://doi.org/10.1002/prep.202300070","url":null,"abstract":"During vertical storage of solid rocket motors, shear creep behavior occurred at the sidewall bonding interface due to self-weight load, threatening the structural safety and storage life of the motor. To study the shear creep characteristics of the bonding interface, shear creep tests were conducted on a shear interface test piece of a motor under various temperatures and stresses. An engineering criterion for the onset of nonlinear viscoelastic stage of the bonding interface was proposed, and a rapid prediction model for shear creep of motor bonding interface in linear viscoelastic stage was devised. Furthermore, the stress-time master curve of shear creep compliance at the bonding interface was established, revealing the variation trend of shear creep compliance during long-term creep process. The results showed that this rapid prediction model had simple construction, high accuracy and wide applicability, and could well predict short-term creep behaviour of bonding interface in linear viscoelastic stage. A method for structural integrity assessment of vertically stored solid rocket motors could be provided by using these research methods and results.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"32 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Reduction of agglomeration effect by aluminum trihydride in solid propellant combustion 用三酸化铝降低固体推进剂燃烧中的结块效应

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-12 DOI: 10.1002/prep.202300147

Dongliang Gou, Xiang Hu, Wen Ao, Peijin Liu, Guoqiang He

{"title":"Reduction of agglomeration effect by aluminum trihydride in solid propellant combustion","authors":"Dongliang Gou, Xiang Hu, Wen Ao, Peijin Liu, Guoqiang He","doi":"10.1002/prep.202300147","DOIUrl":"https://doi.org/10.1002/prep.202300147","url":null,"abstract":"Aluminum trihydride (AlH3) has gained considerable attention as a substitute fuel for aluminum in solid propellants. In this study, we conducted a systematic investigation to evaluate the effects of AlH3 content, ranging from 0 % to 18 %, on propellant ignition, combustion, and agglomeration. Experimental methods such as thermogravimetry−differential scanning calorimetry (TG-DSC), laser ignition, high-speed photography, and collecting condensed combustion products (CCPs) were employed. The results indicate that AlH3 significantly promotes the high-temperature decomposition of ammonium perchlorate (AP). Meanwhile, the addition of cyclotetramethylene tetranitramine (HMX) in propellant does not affect the hydrogen release reaction of AlH3. As the AlH3 content increases from 0 % to 18 %, the spectral emission intensity of the propellants decreases, and the ignition delay time initially increases from 253 ms to 321 ms, and then decreases to 258 ms. Furthermore, the burning rate increases with increasing the AlH3 content, while the pressure exponent is reduced from 0.551 to 0.460. The inclusion of AlH3 in propellants significantly inhibits aluminum agglomeration near the burning surface. Additionally, as the AlH3 content increases, the mean particle size D43 of the CCPs decreases from 50.95 μm to 8.28 μm at 1 MPa. The agglomeration degree of aluminum is very weak at 7 MPa, especially when the AlH3 content exceeds 9 %. The conclusions drawn from this study can serve as valuable guidance for optimizing propellant formulations.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"19 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138632377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of degradation products in thermally treated TATB 热处理 TATB 的降解产物分析

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-07 DOI: 10.1002/prep.202300176

Keith R. Coffee, Adele F. Panasci-Nott, Jason A. Olivas, John Selinsky, Keith D. Morrison, Alan K. Burnham, Gregory L. Klunder, John G. Reynolds

引用次数: 0

Effect of thermal conditioning on the initiation threshold of secondary high-explosives 热调节对二次高爆炸药起爆阈值的影响

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-07 DOI: 10.1002/prep.202300253

Amitesh Maiti, William L. Shaw, Samantha M. Clarke, Christie Fox, Lucia A. Ke, William N. Cheung, Mark A. Burton, Graham D. Kosiba, Christian D. Grant, Richard H. Gee

引用次数: 0

3,5-difluoro-2,4,6-trinitrophenol: A high-energy compound born under the “NO2FNO2” construction strategy 3,5-二氟-2,4,6-三硝基苯酚：在 "NO2FNO2 "构建策略下诞生的高能化合物

IF 1.8 4区工程技术

Propellants, Explosives, Pyrotechnics Pub Date : 2023-12-07 DOI: 10.1002/prep.202300184

Jin Zhu, Cong Li, Suming Jing, Lei Yang, Yucun Liu, Wei Zhang, Jun Zhang

{"title":"3,5-difluoro-2,4,6-trinitrophenol: A high-energy compound born under the “NO2FNO2” construction strategy","authors":"Jin Zhu, Cong Li, Suming Jing, Lei Yang, Yucun Liu, Wei Zhang, Jun Zhang","doi":"10.1002/prep.202300184","DOIUrl":"https://doi.org/10.1002/prep.202300184","url":null,"abstract":"3,5-Difluoro-2,4,6-trinitrophenol (DFTNP) was designed as energetic compounds, based on the “NO2FNO2” strategy. Its structure was fully characterized by IR, NMR, elemental analysis, and single-crystal X-ray diffraction. Physico-chemical characterization of this compound was investigated based on several theoretical techniques. The result indicated that DFTNP is less sensitive to external stimuli, with a thermal sensitivity of 213 °C, impact and friction sensitivity of 15 J and 240 N. It also shows particularly high density (ρ=1.949 g cm−3) and detonation performance (D=8440 m s−1, P=32.60 GPa), which far exceeds the performance of picric acid. Its crystal packing and the intermolecular interaction of DFTNP play an important role inreducing localized heating. In addition, this compound also has great potential for building ionic salts, and its ammonium salt performance exhibits better performance. Good performance not only highlight this compound as a suitable replacement for picric acid, but also suggests that “NO2FNO2” may be a good choice in designing energetic compounds.","PeriodicalId":20800,"journal":{"name":"Propellants, Explosives, Pyrotechnics","volume":"1 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138554104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0