Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device
As an essential component of ammunition, pyrotechnics can control ignition with high reliability. However, due to limits of fabrication technology, traditional pyrotechnics are bulky. To achieve both functionality and miniaturization, MEMS pyrotechnics integrate initiator, safety-and-arming (S&A...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2022-11-01
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| Series: | Defence Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214914721001677 |
| _version_ | 1798044679468482560 |
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| author | Ke-xin Wang Teng-jiang Hu Yu-long Zhao Wei Ren |
| author_facet | Ke-xin Wang Teng-jiang Hu Yu-long Zhao Wei Ren |
| author_sort | Ke-xin Wang |
| collection | DOAJ |
| description | As an essential component of ammunition, pyrotechnics can control ignition with high reliability. However, due to limits of fabrication technology, traditional pyrotechnics are bulky. To achieve both functionality and miniaturization, MEMS pyrotechnics integrate initiator, safety-and-arming (S&A) device and lead charge and keep all components within a small size. MEMS S&A devices, as the core component to ensure system safety, are difficult to achieve active and rapid response to control signals with high safety and reliability. In order to overcome the difficulty, we propose the design and characterization of a MEMS pyrotechnic with a double-layer barrier S&A device. The MEMS pyrotechnic is a high-integrated device with an overall size of 13.4 × 8.5 × 5.2 mm3. The initiator is a NiCr bridge foil covered with an Al/CuO energetic film, which can generate flame when ignited by an excitation voltage. To match the flame energy, lead styphnate is chosen in this study as the lead charge. The S&A device contains four semi-circular barriers, which are directly driven by V-shape electro-thermal actuators to gain active control of the pyrotechnics' ignition condition with rapid response. To improve the system's reliability, the four barriers are axisymmetrically placed in two layers, two barriers for each layer, to constitute a double-layer structure with a thickness of 100 μm. The ignition test results show that the S&A device can prevent the initiator from detonating the lead charge in safety condition. In arming condition, the lead charge will be detonated. |
| first_indexed | 2024-04-11T23:08:04Z |
| format | Article |
| id | doaj.art-e768ef4f77f44abebb2ebf84fa45f685 |
| institution | Directory Open Access Journal |
| issn | 2214-9147 |
| language | English |
| last_indexed | 2024-04-11T23:08:04Z |
| publishDate | 2022-11-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Defence Technology |
| spelling | doaj.art-e768ef4f77f44abebb2ebf84fa45f6852022-12-22T03:57:57ZengKeAi Communications Co., Ltd.Defence Technology2214-91472022-11-01181120342044Research on a MEMS pyrotechnic with a double-layer barrier safety and arming deviceKe-xin Wang0Teng-jiang Hu1Yu-long Zhao2Wei Ren3State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; Corresponding author.State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, ChinaState Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, 710049, China; Science and Technology on Applied Physical Chemistry Laboratory, Shaanxi Applied Physical Chemistry Research Institute, Xi'an, 710061, ChinaAs an essential component of ammunition, pyrotechnics can control ignition with high reliability. However, due to limits of fabrication technology, traditional pyrotechnics are bulky. To achieve both functionality and miniaturization, MEMS pyrotechnics integrate initiator, safety-and-arming (S&A) device and lead charge and keep all components within a small size. MEMS S&A devices, as the core component to ensure system safety, are difficult to achieve active and rapid response to control signals with high safety and reliability. In order to overcome the difficulty, we propose the design and characterization of a MEMS pyrotechnic with a double-layer barrier S&A device. The MEMS pyrotechnic is a high-integrated device with an overall size of 13.4 × 8.5 × 5.2 mm3. The initiator is a NiCr bridge foil covered with an Al/CuO energetic film, which can generate flame when ignited by an excitation voltage. To match the flame energy, lead styphnate is chosen in this study as the lead charge. The S&A device contains four semi-circular barriers, which are directly driven by V-shape electro-thermal actuators to gain active control of the pyrotechnics' ignition condition with rapid response. To improve the system's reliability, the four barriers are axisymmetrically placed in two layers, two barriers for each layer, to constitute a double-layer structure with a thickness of 100 μm. The ignition test results show that the S&A device can prevent the initiator from detonating the lead charge in safety condition. In arming condition, the lead charge will be detonated.http://www.sciencedirect.com/science/article/pii/S2214914721001677MEMSPyrotechnicsSafety and arming deviceInitiatorElectro-thermal actuator |
| spellingShingle | Ke-xin Wang Teng-jiang Hu Yu-long Zhao Wei Ren Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device Defence Technology MEMS Pyrotechnics Safety and arming device Initiator Electro-thermal actuator |
| title | Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device |
| title_full | Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device |
| title_fullStr | Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device |
| title_full_unstemmed | Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device |
| title_short | Research on a MEMS pyrotechnic with a double-layer barrier safety and arming device |
| title_sort | research on a mems pyrotechnic with a double layer barrier safety and arming device |
| topic | MEMS Pyrotechnics Safety and arming device Initiator Electro-thermal actuator |
| url | http://www.sciencedirect.com/science/article/pii/S2214914721001677 |
| work_keys_str_mv | AT kexinwang researchonamemspyrotechnicwithadoublelayerbarriersafetyandarmingdevice AT tengjianghu researchonamemspyrotechnicwithadoublelayerbarriersafetyandarmingdevice AT yulongzhao researchonamemspyrotechnicwithadoublelayerbarriersafetyandarmingdevice AT weiren researchonamemspyrotechnicwithadoublelayerbarriersafetyandarmingdevice |