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| Assessment and Protection of Aerospace Products Against Explosive Shock Environments |
| Received:February 18, 2025 Revised:March 05, 2025 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2025.04.012 |
| KeyWord:pyrotechnic devices shock environment evaluation conditions spaceflight single-unit product |
| Author | Institution |
| LIN Xiaoyan |
Shanghai Institute of Satellite Engineering, Shanghai , China |
| WANG Shunan |
Shanghai Institute of Satellite Engineering, Shanghai , China |
| TAO Qiang |
Shanghai Institute of Satellite Engineering, Shanghai , China |
| CHEN Rui |
Shanghai Institute of Satellite Engineering, Shanghai , China |
| LI Haibao |
Shanghai Institute of Satellite Engineering, Shanghai , China |
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| Abstract: |
| The work aims to revise the traditional test conditions for pyrotechnic devices of spacecraft products under shock environments, and study the shock attenuation method to evaluate and protect spacecraft products in a more effective way. By utilizing theoretical calculations for shock attenuation in continuous structures and engineering experience for shock attenuation in discontinuous structures, the shock environment for pyrotechnic devices of aerospace products was predicted. With satellites as an example, the sources and reasons for the traditional shock test conditions of pyrotechnic devices in single-unit satellite products were analyzed. Considering the characteristics of current new satellite types (such as increased use of explosive bolts, satellite miniaturization, integration, and one-step prototype production), an analytical prediction method for the shock environment of pyrotechnic devices in single-unit products was provided. Combined with data analysis of pyrotechnic device detonation from historical satellite models, more suitable evaluation conditions for pyrotechnic device shock environments were proposed to meet current application requirements.The traditional shock environment evaluation conditions of pyrotechnic devices were no longer suitable for the application needs of new satellite types. Recommendations for evaluation conditions for pyrotechnic device shock environments in current satellite single-unit products were obtained. In conclusion, under the current circumstances, the shock environment for single-unit products on satellites is becoming increasingly severe. Conducting shock tests according to the recommended pyrotechnic device shock environment evaluation conditions can more realistically simulate the on-orbit shock environment of spacecraft products, ensuring thorough qualification while protecting single-unit products from over-testing in the low-frequency range. This paper can be used to guide the establishment of shock test conditions for aerospace models, evaluate whether mature single-unit products can adapt to the explosive shock environment of new aerospace models, and provide recommendations for reducing pyrotechnic device shock environments. |
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