Results 11 to 20 of about 49,027 (122)

RDX/AP-CMDB Propellants Containing Fullerenes and Carbon Black Additives [PDF]

Defence Science Journal, 2009
The influence of fullerene additives on the combustion behaviour of cyclotrimethylene trinitramine/ammonium perchlorate composite modified double-base (RDX/AP-CMDB) propellants are investigated by thermogravimetricdifferential thermogravimetric (TG-DTG) analysis, burning rate tests, and scanning electron microscopy observations.
X. Han, T. Wang, Z. Lin, D. Han, S. Li, F. Zhao, L. Zhang   +6 more
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Thermal Behaviour of AP Based CMDB Propellants with Stabilizers [PDF]

Defence Science Journal, 1992
Stability test results and DTA studies indicate the superiority of molecular sieve (MS) over zirconium silicate (ZrSiO/sub 4/) as the stabilizer for a composite modified double base (CMDB) system. Shelf life as computed from autoignition test results was 30 years for MS-based composition which is almost double the life of ZrSiO/sub 4/, but ...
S. N. Asthana, C. N. Divekar, R. R. Khare, P. G. Shrotri   +3 more
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Impact, Friction, Shock Sensitivities and DDT Behaviour of Advanced CMDB Propellants [PDF]

Defence Science Journal, 1989
This paper reports results of impact, friction and shock sensitivities of CMDB propellants containing AP, RDX, PETN and their combinations. Results of impact and friction sensitivities indicate that CMDB propellants containing AP are highly sensitive and AP-based compositions are more impact and friction sensitive than RDX and PETN-based compositions ...
S. N. Asthana, B. K. Athawale, Haridwar Singh   +2 more
openaire   +3 more sources

Study on elongation master curve of thermal aging composite modified double base propellant [PDF]

Scientific Reports
In order to predict the maximum elongation of composite modified double base (CMDB) propellants under different aging time, temperature and strain rate, systematic uniaxial tensile characterization was performed across six controlled temperatures (233.15 
Jian Zheng, Jiaming Liu, Heng Deng, Jinfeng Dang, Chunqing Yang, Zhengwei Sun, Zongtao Guo, Jinsheng Xu, Xiong Chen   +8 more
doaj   +2 more sources

Storage-life prediction and relationship between maximum elongation and stabilizer depletion for a composite modified double base propellant (CMDB) propellant

Mechanics of Time-Dependent Materials, 2023
In an effort to predict the storage life of a composite modified double base propellant (CMDB propellant) at 298.15 K, we investigated the relationship between the maximum elongation of the propellant and its stabilizer depletion.
Jia-ming Liu, Tian-yi Li, Ming-feng Yang, Jian Zheng, Xiong Chen, Jin-sheng Xu   +5 more
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Mechanical behaviors and failure mechanisms of CMDB propellant under wide strain rate tension loading

Journal of Physics: Conference Series, 2023
Abstract Composite modified double-base (CMDB) is a sort of mature propellant with a stable structure and high performance. Its tensile mechanical properties should be considered in the structural integrity design of solid propellant charges. The tensile tests were performed on the CMDB by a quasi-static measurement machine.
Jianping Yin, Meng Li, Wenxuan Du, Xuanfu He, Jun Song, Bowen Hu, Meng Huang, Yang Li, Yinggang Miao   +8 more
openaire   +2 more sources

Effects of nano-HMX on the properties of RDX-CMDB propellant: Higher energy and lower sensitivity

Defence Technology, 2017
Batch preparation of nano-HMX was achieved via a mechanical trituration method. The morphology and particle size of nano-HMX and raw RDX were characterized using SEM.
Gao Han, Hou Xiao-ting, Ke Xiang, Liu Jie, Hao Gazi, Xiao Lei, Chen Teng, Zuo Ying-ying, Jiang Wei   +8 more
doaj   +2 more sources

Thermal behavior and non-isothermal decomposition reaction kinetics of catalyzed hniw-cmdb propellant

Journal of Physics: Conference Series, 2020
Abstract The thermal behavior under pressure of 0.1, 4, and 7 MPa and non-isothermal decomposition reaction kinetics under pressure of 4 and 7 MPa of the composite modified double base propellant containing hexanitrohexaazaisowurtzitane (HNIW-CMDB propellant) was investigated by differential scanning calorimetry (DSC). The results showed
S Y Xu, F Q Zhao, E G Yao, H Y Jiang, J H Yi, M Li, Q Pei, H X Hao   +7 more
openaire   +2 more sources

Effect of Nano Combustion Modifier on Combustion Properties of DB and CMDB-propellant [PDF]

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016), 2016
In order to investigate the effects of several nano combustion modifiers (nm-DPT, nm-CB and nm-Al) on the combustion properties of DB/Al-CMDB/RDX-CMDB propellants, the propellant samples were prepared through a solventless extrusion technique. The burning rates of propellants were measured by the strand burner method. The results showed that the nm-DPT
Liang Ma, Wei Zheng, Yan-Jing Yang, Xiu-Duo Song, Hong-Xu Gao, Jiao-Qiang Zhang, Feng-Qi Zhao, Zhi-Feng Yuan   +7 more
openaire   +2 more sources

Effect of High Energy Materials on Sensitivity of Composite Modified Double Base CMDB Propellant System [PDF]

Defence Science Journal, 1992
The shock sensitivities (viz, impact and friction) of composite modified double-base (CMBD) ingredients, double-base (DB) matrix (SNC:CL) and the effect of high energy materials like ammonium perchlorate (AP), cyclotrimethylene trinitramine(RDX), cyclotetramethylene tetranitramine (HMX) and pentaerythritol tetranitrate (PTN) on a CMDB system, have
M.K. Choudhari, S.S. Dhar, P.G. Shrotri, Haridwar Singh   +3 more
openaire   +3 more sources