現在および将来の宇宙観光産業によるCO2排出量の推定
Angela M Huang1,2, Yangyang Xu2
1Ronald Reagan High School, San Antonio, Texas, United States of America.
PloS one
|August 20, 2025
まとめ
サブオービタル宇宙旅行は 商用飛行の400~1,000倍の二酸化炭素 (CO2) を 1時間1人の乗客に排出します 将来の成長は世界の排出量に大きな影響を及ぼし,この新興産業により大きな注意を払う必要があります.
科学分野:
- 環境科学
- 航空宇宙工学
- 気候変動に関する研究
背景:
- 2030年と2050年の温室効果ガス排出の目標は極めて重要です.
- 宇宙観光,特に軌道下飛行は急速に拡大しています.
- 軌道下での宇宙旅行によるCO2排出量に関するデータは限られている.
研究 の 目的:
- サブオービタル飛行によるCO2排出量を推定するための分析モデルを開発する.
- サブオービタル観光と商業航空のCO2排出量を比較する.
- 産業の成長に基づいて将来の二酸化炭素排出量を予測する.
主な方法:
- 物理原理と運動学に基づいた分析モデルを開発した.
- 宇宙船のバリエーション,燃料タイプ (液体水素,RP-1,HTPB,メタン) と飛行段階を考慮した.
- 乗客1人当たりのCO2排出量と年間総排出量
主要な成果:
- サブオービタル観光では 乗客"人あたりのCO2の排出量は 商用航空の400~1,000倍になります
- 液体水素とメタンの燃料は直接の排出量が少ないが,生産による間接的な排出量は大きい.
- 従来の燃料 (RP-1,HTPB) は,かなり高いCO2排出量をもたらします.
- 年間排出量は10年以内に2千万トンのCO2に達し,国全体の排出量に匹敵する.
結論:
- サブオービタル宇宙旅行は 過剰な二酸化炭素排出量です
- 燃料生産は全体的な炭素フットプリントに大きく貢献しています
- サブオービタル観光の急速な成長は 相当な将来の気候リスクをもたらします
- 軌道下での CO2 排出量に 注目し規制する必要があります
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