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Updated: Jun 21, 2026

10:35
Bringing the Visible Universe into Focus with Robo-AO
Published on: February 12, 2013
まとめ
アポロロケットからの低周波音波がバミューダで検出された. 高空から発するこれらの信号は,稀化した大気における衝撃形成理論によって説明される.
科学分野:
- アコースティクス アコースティクス
- 航空宇宙工学は,航空宇宙工学である.
- 大気物理学 大気物理学
背景:
- 低周波音現象は,高速の大気現象によって発生することがあります.
- 以前の研究では,ロケット打ち上げからの音響信号が調査されていますが,高空からの音源は依然として理解が不十分です.
研究 の 目的:
- アポロロケットの打ち上げ中に記録された低周波音の起源と特性を調査する.
- これらの音響信号が,大気の衝撃波理論によって説明できるかどうかを判断する.
主な方法:
- アポロロケットの通過中にバミューダの三方配列によって記録された音響データの分析.
- 信号特性 (一貫性,速度,到着時間,周波数) とロケット軌道のデータとの比較.
- 稀化した大気における衝撃形成に対する運動理論の応用と,ガスダイナミクスの衝撃理論.
主要な成果:
- 一貫した低周波音信号は,アポロロケットが188kmの高さで打ち上げられたときと一致して,複数回記録された.
- 信号は高超音速で,配列全体で一貫した特徴 (外観,周波数,到着時間) を示した.
- 観測された表面圧力変動は,高い高度での衝撃形成の理論的モデルと一致していました.
結論:
- 記録された低周波の音は,高空でのアポロロケット車両に決定的に起因する.
- 運動理論とガスダイナミクスを組み合わせたアプローチは,観測された音響現象と表面圧力効果をうまく説明します.
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