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Lai Y.-H.,Beijing Institute of Technology | Dong H.-P.,Beijing Institute of Technology | Cheng T.,The 213th Research Institute of China Ordnance Industry | Yang S.-B.,The 213th Research Institute of China Ordnance Industry
Journal of Donghua University (English Edition) | Year: 2014

For evaluating reliability of an aviation pyrotechnics system, a Bayesian reliability estimation method utilizing reliability information of a system and its units was put forward. Firstly, an inheritance factor was determined by chi-square goodness of fit test. Then the mixed prior distribution was obtained based on the inheritance factor. Finally, the density function of posterior distribution was obtained and used to assess the reliability of system. According to the new method, the reliability of an aviation pyrotechnics system was evaluated to reach 0.989 6 at the confidence level of 0.90. To reach the reliability index, the required numbers of trials of system and its units were given. It is instructional to apply the new method on the reliability estimation of aviation pyrotechnics systems. Copyright © 2014 Editorial Department of Journal of Donghua University. All rights reserved.


Li Z.-Y.,The 213th Research Institute of China Ordnance Industry | Xi L.-X.,The 213th Research Institute of China Ordnance Industry | Chen J.,Research Institute of Xian Micromotor | Guo C.-X.,The 213th Research Institute of China Ordnance Industry | And 2 more authors.
Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis | Year: 2010

The radiation spectrum of pyrotechnics' burning flame was analyzed using transient spectrum radiometer. The working principle of multi-spectral thermometry was described. Combined with the radiation spectrum of pyrotechnics' burning flame, the multi-spectral thermometer system was designed which had twelve working channels. The tester can choose the right working channels to calculate according to the radiation spectrum of the flame to be tested. The system is composed by optics part, electronic part, data acquisition part and data processing part. In this paper, the emissive power of black powder's flame has been tested using the multi-spectral thermometer system. The burning flame temperature-time curve was showed after iteration calculation. Experiments indicate that the multi-spectral thermometer system can be well used to measure the flame temperature of pyrotechnics based on analyzing the emissive power when choosing the right working channels. This method lays a foundation for the research of combustion output characteristics of pyrotechnics.


Jin L.,The 213th Research Institute of China Ordnance Industry | Yang Z.-Y.,The 213th Research Institute of China Ordnance Industry | Zhang Y.-R.,The 213th Research Institute of China Ordnance Industry | Gao Y.,The 213th Research Institute of China Ordnance Industry | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2012

An experiment device of in-line explosive trains (slapper detonator-HNS-II-JHB-1) was designed to study the explosive performance of in-line explosive trains. The output performance of slapper detonator used in the experiment were analyzed, and the explosive performance of in-line explosive trains under low temperature and normal temperature were experimented. The results show that, in this experiment condition, slapper detonator can reliably initiate the bare insensitive JHB-1 under the condition of less 8 mm transfer intervals; slapper detonator can also reliably initiate HNS-II under the low temperature of -40°C, normal temperature as well as extend transfer interval; and finally, in-line explosive trains (slapper detonator-HNS-II-JHB-1) can reliably detonate.


Chen L.-K.,The 213th Research Institute of China Ordnance Industry | Sheng D.-L.,The 213th Research Institute of China Ordnance Industry | Zhu Y.-H.,The 213th Research Institute of China Ordnance Industry | Yang B.,The 213th Research Institute of China Ordnance Industry | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2010

By adopting coprecipitating method, the green primary explosive ferric styphnate-ferric hypophosphite (FSFH) was synthesized from styphnate-ferric and sodium hypophosphite. The thermal and explosive properties(impact, friction, flame, electrostatic spark sensitivity, the minimum initiating charge) were studied. The results show that FSFH is high friction sensitivity with 50 angle and 100% fire. The FSFH and lead azide are almost equal in impact, flame and electrostatic spark sensitivity. The thermal decomposition peak of FSFH is 205.88°C with initial temperature of 185.36°C, which indicates that FSFH is weak primary explosive and can be used as primer charge and stab initiating composition.


Li Z.-Y.,The 213th Research Institute of China Ordnance Industry | Xi L.-X.,The 213th Research Institute of China Ordnance Industry | Liu J.-P.,The 213th Research Institute of China Ordnance Industry | Guo C.-X.,The 213th Research Institute of China Ordnance Industry | And 2 more authors.
Hanneng Cailiao/Chinese Journal of Energetic Materials | Year: 2010

The combustion characteristics of pyrotechnic composition was studied. The feasibility of using multi-spectral thermometry to test the flame temperature of pyrotechnic composition was analyzed. The multi-spectral thermometer system with twelve testing channels was developed. The correctness and the stability of the multi-spectral thermometer system were verified using the Israel CI systems SR-20-33 black body which temperature precision is ± 3°C. The flame temperatures of a type of electric igniters were tested using the multi-spectral thermometer system.

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