在非名义地球返回囊着陆期间对宇航员的肺损伤风险评估
Xin Ma1, Dongmei Wang2, Yutan Wang1
1School of Mechanical Engineering, Ningxia University, Yinchuan, 750021, Ningxia, China.
Annals of biomedical engineering
|September 4, 2025
概括
宇航员囊降落带来严重肺伤的风险. 37,1g的撞击被确定为危及生命的肺损伤的临界值,特别是在右肺的S5段.
科学领域:
- 生物力学
- 航空航天医学
- 创伤研究
背景情况:
- 太空飞行员在飞行器下降时的安全性至关重要.
- 了解严重的肺伤 (PC) 机制对于船员的生存至关重要.
- 现有的太空着陆撞击伤害门需要改进.
研究的目的:
- 在高g囊着陆期间调查宇航员严重肺伤的受伤机制和脆弱区域.
- 确定宇航员胸肺损伤的危险伤害门.
- 确定特定的肺部部分和相关的严重损伤风险因素.
主要方法:
- 模拟了6个高强度降落场景 (≤52.1g),使用降落塔和混合IIIATD.
- 使用THUMS FEM模拟胸部 - 肺动力学在40°仰卧姿势.
- 通过粘度标准 (VC),延展/延展率和AIS标准评估损伤风险.
主要成果:
- 37. 1g冲击导致AIS 4+ PC的概率为25%,肋骨骨折 (RF) 的概率为19. 5%.
- 右中叶 (S5) 的中间部分是最脆弱的区域,受肋骨和肝脏压缩的影响.
- 右肺损伤比左侧更严重;第1,第9和第10肋骨骨折加剧了肺损伤.
结论:
- 定义为AIS 4+胸肺创伤的临界值为37.1g.
- 阐明了S5压缩机制及其与高风险肋骨骨折的联系 (第1,第9,第10).
- 提供了改善宇航员生存协议,分类和保护对策设计的生物力学基础.
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