不同座椅倾斜角度对腰部动态反应和月球地球重返期间受伤的影响
Mengmeng Jin1, Jiatao Wang2, Qianxiang Zhou2
1School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou, China.
Frontiers in bioengineering and biotechnology
|June 26, 2024
概括
航天器座位的倾斜程度会影响宇航员在进入太空时的安全. 超过20度的角度会增加腰椎损伤的风险,但在月球任务中,低于30度通常是安全的.
科学领域:
- 生物机械工程 生物机械工程
- 航空航天医学 航空航天医学
- 计算力学 计算力学 计算力学
背景情况:
- 在航天器重返太空时,宇航员的安全至关重要.
- 航天器座位的倾斜影响着人体上的重新进入力.
- 腰椎损伤是高G机动期间的一个重要问题.
研究的目的:
- 量化分析航天器座椅倾斜角度对宇航员在月球-地球重返时的腰椎损伤的影响.
- 为了评估在不同的重入负载条件下受伤的风险.
- 为优化载人月球任务的航天器座位设计提供数据.
主要方法:
- 开发并验证了宇航员腰椎的有限元模型.
- 使用有限元分析对0°,10°,20°和30°的座椅倾斜角度进行模拟的再入场场景.
- 使用生物组织损伤标准和多轴动态响应标准评估腰椎损伤风险.
主要成果:
- 座椅倾斜角度的增加导致脊椎和纤维状环的压力更高,尽管速度正在下降.
- 座椅倾斜度超过20°,当受到接近9G的长江5T1 (CE-5T1) 返入负荷时,会增加组织损伤的风险.
- 任何测试的重返载荷条件都没有在座位倾斜角度低于30°时直接导致腰椎损伤.
结论:
- 航天器座椅倾斜角度是航天员在重新入境期间安全的关键因素.
- 在测试条件下,低于30°的角度似乎对腰椎完整性是安全的.
- 这些发现支持基于证据的设计改进,用于月球任务中的航天器座位.
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