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rxk14007の日記: NASA FY09 Budget Estimatesを読んでみた

日記 by rxk14007

NASA、JAXAから宇宙ステーション補給機の購入を検討というストーリーを、否定するような声明がNASAから出ているが、NASAのFY09 Budget Estimatesには、日本からの調達も代替案として検討中という話が載っている。
税金を有効に使うために自国での調達を優先するという建前はあるけど、日本のHTVの選択肢も可能性はなくなったわけじゃない。

P475から引用
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In FY 2007, NASA continued progress in both of these areas for improvement. The ISS is currently addressing several risks that may be encountered in operating the ISS after the Shuttle is retired: the uncertainty in the availability of the cargo transportation vehicles under development, the uncertainty in the costs of those vehicles, and the long lead-time required for procuring the vehicles. Careful risk management is required for planning human spaceflight missions, and this includes continuing the Commercial Orbital Transportation Services (COTS) Project which funds demonstrations of resupply.
Preparations have begun for follow-on procurements of U.S. commercial transportation services as the primary source of resupplying the ISS after Shuttle retirement. A mixed fleet approach will consider alternatives such as the European Space Agency Automated Transfer Vehicle and the Japan Aerospace Exploration Agency H-II Transfer Vehicle if U.S. commercial services are unavailable. To address program manager accountability, the ISS deployed Earned Value Management (EVM) practices at lower levels to improve performance monitoring and control with the same success as demonstrated when using EVM at higher levels.

P478から引用
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The ISS Cargo Crew Services budget consists of International Partner and commercial purchases.
In the near-term, International Partner purchases are required because no U.S. alternatives exist to the Space Shuttle. In the long-term, NASA would prefer to use U.S. commercial space transportation providers, both to ensure domestic sources and to expend taxpayer dollars domestically. The commercial cargo services acquisition is currently in the pre-formal acquisition phase. A draft and formal Request for Proposal (RFP) is expected during FY 2008. NASA currently has agreements with Russia to purchase Soyuz and Progress flights. In the future, NASA may also purchase Japanese H-II Transfer Vehicle (HTV) or European Automated Transfer Vehicle (ATV) flights for cargo delivery in the post-Shuttle timeframe.

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