地球への帰還カプセル着陸時の宇宙飛行士の肺損傷リスク評価
Xin Ma1, Dongmei Wang2, Yutan Wang1
1School of Mechanical Engineering, Ningxia University, Yinchuan, 750021, Ningxia, China.
Annals of biomedical engineering
|September 4, 2025
まとめ
宇宙飛行士のカプセル着陸は重度の肺傷 (PC) のリスクを伴います. 37. 1gの衝撃は,生命を脅かす肺損傷,特に右肺のS5セグメントの重要な値として特定されています.
科学分野:
- バイオメカニクス
- 航空宇宙医学
- トラウマ研究
背景:
- 宇宙飛行士の安全は カプセル着陸時に非常に重要です
- 重度の肺傷 (PC) のメカニズムを理解することは,乗組員の生存に不可欠です.
- 宇宙着陸の衝撃に対する既存の傷害の値は 精細化が必要です
研究 の 目的:
- 高gカプセル着陸時の宇宙飛行士の重度の肺傷 (PC) の傷害メカニズムと脆弱な領域を調査する.
- 宇宙飛行士の胸肺外傷の 臨界値を設定する
- 肺の特定の部位と重傷のリスク要因を特定する.
主な方法:
- 降下塔とハイブリッドIIIATDを用いて,6つの高強度着陸シナリオ (≤52.1g) をシミュレートした.
- 40°の仰向け姿勢で胸と肺の動態をモデル化するために THUMS FEM を使用しました.
- 粘度基準 (VC),ストレート/ストレートレート,AIS基準による傷害リスクの評価
主要な成果:
- 37. 1gの衝撃はAIS 4+PCの25%の確率と3+の肋骨骨折 (RF) の19. 5%の確率をもたらしました.
- 右側中葉 (S5) の中部セグメントは,肋骨の弓と肝臓の圧縮によって最も脆弱な領域でした.
- 右肺の損傷は左肺より重かった. 第1,第9,第10の肋骨骨折は肺の損傷を悪化させた.
結論:
- AIS 4+ 胸肺外傷の臨界値として 37. 1g が定義されています.
- S5圧縮メカニズムと高リスクの肋骨骨折との関連を明らかにした (第1,第9,第10).
- 改善された宇宙飛行士の生存プロトコル,トリアージ,保護対策の設計のための生体力学的な基礎を提供します.
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