NASA、Artemisプログラム再編でExploration Upper Stageをキャンセル

日本語

NASAは、Artemisプログラムの大幅な改訂の一環として、Space Launch SystemロケットのExploration Upper Stageをキャンセルした。Jared Isaacman長官が発表したこの決定は、表面活動に焦点を当て、より効率的な上段ステージを使用することで月面着陸を加速させることを目的としている。この措置は、2027年および2028年のミッションに先立つSpaceXとBlue Originの人型着陸船のテストを支援する。

NASAのArtemisプログラムは2026年初頭に大幅な再構築を経験し、Jared Isaacman長官が月面ミッションへの迅速な進展を優先した。2026年3月6日の政府調達通知により、NASAはArtemis IVおよびVミッション向けの次世代上段ステージ、特にCentaur Vについて、United Launch Allianceとの単独供給契約を発行する計画であることが示された。これにより、10年以上前にBoeingに委託されたExploration Upper Stageの開発が事実上終了することになる。契約額は2016年以降35億ドルを超え、初期契約は9億6200万ドルだった。

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