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Updated: Jun 25, 2026

10:26
Fabrication and Characterization of Superconducting Resonators
Published on: May 21, 2016
まとめ
サターンVロケットからの超音波が記録され,2つの異なる信号グループが明らかになった. 分析によると,第2のより強烈なグループは第1段階から発生し,ロケットが音よりも速く走ったために信号が逆転した.
科学分野:
- アコースティクス アコースティクス
- 大気科学 大気科学
- 航空宇宙工学 航空宇宙工学とは
背景:
- 大きなロケット打ち上げによって発生する赤外音波は,長距離を移動することができます.
- これらの波の伝播と特性を理解することで,大気条件と打ち上げ車両の音響に関する洞察が得られます.
研究 の 目的:
- 1967年,サターンVロケットの打ち上げで記録された異なる赤外音波のグループを分析するために.
- 記録された赤外線信号の起源と特徴を決定する.
- 信号の逆転現象と波群の分離を調査する.
主な方法:
- 打ち上げ地点から1485kmの距離で,超音波を記録する.
- サターンVロケットの軌道のデータを分析した.
- 記録された超音波データにフーリエ解析を適用する.
主要な成果:
- 振幅と持続時間によって異なる2つの異なる赤外線波のグループが特定されました.
- 最初のグループ (10分間の期間) は,第1段階の再入国または高度 (>120 km) の第2段階に割り当てられました.
- 2番目の,より強烈なグループ (9分間の持続時間) は,信号の逆転を観察した第1ステージからの音として識別されました.
結論:
- 2つの異なる信号グループに分割されるのは,ロケットが音よりも速く走っているからだろう.
- 上層大気圏のサウンドチャネル内の音のトラッピングは,観測された信号分離を説明することができます.
- フーリエ解析では,ロケットで発生したインフラサウンドの特徴である長時間 (7〜10秒) にわたって広がるエネルギーを明らかにしました.
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