在模拟轨道下太空飞行期间预防G诱导对视觉和意识的影响
Aerospace medicine and human performance
|December 23, 2024
概括
一个修改后的抗G机动,涉及肌肉紧张,在模拟航天飞机发射和重新进入过程中有效防止视觉症状. 这种技术显示出保护乘客免受G-诱导效应的潜轨道太空飞行的前景.
科学领域:
- 航空航天医学 航空航天医学
- 太空飞行中的人类因素
- 身体生理学 身体生理学
背景情况:
- 轨道下太空飞机飞行存在视觉症状和G诱导的意识丧失的风险.
- 这些与G相关的效应在从微重力中重新进入时可能会加剧.
- 一个适合公众的修改后的反G机动可以减轻这些风险.
研究的目的:
- 为了评估修改后的反G机动在模拟航天飞机发射和再入境期间预防视觉症状的有效性.
- 评估预期肌肉紧张对G诱导的灰色表情的影响.
主要方法:
- 招募了13名先前有视觉症状的健康受试者.
- 使用了一种加速配置,模拟太空飞机的发射和重新进入.
- 试验对象在放松的状态下,并在进行预期肌肉紧张时进行了机动.
主要成果:
- 预期肌肉紧张完全防止了模拟发射期间的灰色.
- 肌肉紧张在模拟重新进入过程中减少了54%的灰色,并延迟了它的发作.
- 总体而言,灰色的发病率从发射时降低了70%~0%,并在肌肉紧张后重新进入时降低了80%~37%.
结论:
- 预期的腿部和腹部肌肉前紧张是有效的防止G诱导的视觉效应在模拟的次轨道航天飞行.
- 这种机动应该考虑在轨道下太空飞机作业中常规使用.
- 需要使用实际飞行数据进行进一步的研究来证实这些发现.
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