Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices
Miniaturized laser-initiated pyrotechnic devices have great application prospects in aerospace and modern weapon systems due to their excellent energy output performance and reliability. In order to develop a low-energy insensitive laser detonation technology based on a two-stage charge structure, i...
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| Format: | Article |
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MDPI AG
2023-04-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/5/917 |
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| author | Mingchun Xian Kang Zhao Xuwen Liu Yangang Meng Junyao Xie Jingwei Li Lele Tong Meng Huang Lizhi Wu |
| author_facet | Mingchun Xian Kang Zhao Xuwen Liu Yangang Meng Junyao Xie Jingwei Li Lele Tong Meng Huang Lizhi Wu |
| author_sort | Mingchun Xian |
| collection | DOAJ |
| description | Miniaturized laser-initiated pyrotechnic devices have great application prospects in aerospace and modern weapon systems due to their excellent energy output performance and reliability. In order to develop a low-energy insensitive laser detonation technology based on a two-stage charge structure, it is important to deeply analyze the motion law of a titanium flyer plate driven by the deflagration of the first-stage charge (RDX). The effects of the charge mass of RDX, flyer plate mass, and barrel length on the motion law of flyer plates were studied through a numerical simulation method based on the Powder Burn deflagration model. The consistency between the numerical simulation and the experimental results was analyzed using the paired t confidence interval estimation method. The results show that the Powder Burn deflagration model can effectively describe the motion process of the RDX deflagration-driven flyer plate with a 90% confidence level, and its velocity error is ≤6.7%. The speed of the flyer plate is proportional to the mass of the RDX charge, inversely proportional to the mass of the flyer plate, and exponentially related to its moving distance. As the moving distance of the flyer plate increases, the RDX deflagration products and air in front of the flyer plate are compressed, which inhibits the motion of the flyer plate. In the optimum state (the mass of the RDX charge is 60 mg, the mass of the flyer is 85 mg, and the length of the barrel is 3 mm), the speed of the titanium flyer reaches 583 m/s, and the peak pressure of the RDX deflagration reaches 2182 MPa. This work will provide a theoretical basis for the refined design of a new generation of miniaturized high-performance laser-initiated pyrotechnic devices. |
| first_indexed | 2024-03-11T03:29:19Z |
| format | Article |
| id | doaj.art-842b91c158c0456d9bf37739be7c6010 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T03:29:19Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-842b91c158c0456d9bf37739be7c60102023-11-18T02:29:08ZengMDPI AGMicromachines2072-666X2023-04-0114591710.3390/mi14050917Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic DevicesMingchun Xian0Kang Zhao1Xuwen Liu2Yangang Meng3Junyao Xie4Jingwei Li5Lele Tong6Meng Huang7Lizhi Wu8School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSichuan Aerospace Chuannan Pyrotechnics Co., Ltd., Luzhou 646000, ChinaState Key Laboratory of Precision Blasting, Jianghan University, Wuhan 430056, ChinaSichuan Aerospace Chuannan Pyrotechnics Co., Ltd., Luzhou 646000, ChinaSichuan Aerospace Chuannan Pyrotechnics Co., Ltd., Luzhou 646000, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaSichuan Aerospace Chuannan Pyrotechnics Co., Ltd., Luzhou 646000, ChinaSichuan Aerospace Chuannan Pyrotechnics Co., Ltd., Luzhou 646000, ChinaSchool of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, ChinaMiniaturized laser-initiated pyrotechnic devices have great application prospects in aerospace and modern weapon systems due to their excellent energy output performance and reliability. In order to develop a low-energy insensitive laser detonation technology based on a two-stage charge structure, it is important to deeply analyze the motion law of a titanium flyer plate driven by the deflagration of the first-stage charge (RDX). The effects of the charge mass of RDX, flyer plate mass, and barrel length on the motion law of flyer plates were studied through a numerical simulation method based on the Powder Burn deflagration model. The consistency between the numerical simulation and the experimental results was analyzed using the paired t confidence interval estimation method. The results show that the Powder Burn deflagration model can effectively describe the motion process of the RDX deflagration-driven flyer plate with a 90% confidence level, and its velocity error is ≤6.7%. The speed of the flyer plate is proportional to the mass of the RDX charge, inversely proportional to the mass of the flyer plate, and exponentially related to its moving distance. As the moving distance of the flyer plate increases, the RDX deflagration products and air in front of the flyer plate are compressed, which inhibits the motion of the flyer plate. In the optimum state (the mass of the RDX charge is 60 mg, the mass of the flyer is 85 mg, and the length of the barrel is 3 mm), the speed of the titanium flyer reaches 583 m/s, and the peak pressure of the RDX deflagration reaches 2182 MPa. This work will provide a theoretical basis for the refined design of a new generation of miniaturized high-performance laser-initiated pyrotechnic devices.https://www.mdpi.com/2072-666X/14/5/917laser-initiateddeflagration-drivenflyer platepowder burn |
| spellingShingle | Mingchun Xian Kang Zhao Xuwen Liu Yangang Meng Junyao Xie Jingwei Li Lele Tong Meng Huang Lizhi Wu Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices Micromachines laser-initiated deflagration-driven flyer plate powder burn |
| title | Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices |
| title_full | Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices |
| title_fullStr | Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices |
| title_full_unstemmed | Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices |
| title_short | Theoretical Analysis and Numerical Simulation of the Motion of RDX Deflagration-Driven Flyer Plate Based on Laser-Initiated Micro-Pyrotechnic Devices |
| title_sort | theoretical analysis and numerical simulation of the motion of rdx deflagration driven flyer plate based on laser initiated micro pyrotechnic devices |
| topic | laser-initiated deflagration-driven flyer plate powder burn |
| url | https://www.mdpi.com/2072-666X/14/5/917 |
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