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NASAの月軌道宇宙ステーション「ラプターゲートウェイ」に新たな問題が発生しました。北米航空宇宙局(NAS)アダミン・ジェイダ・アイザックマン氏は、月面着陸ミッションへの焦点を当てるためにプロジェクトを一時停止すると発表していましたが、現在、ステーションの腐食性問題が原因だと判明しています。
アイザックマン氏は、証言でHALO(Habitation and Logistics Outpost)モジュールとI-HABモジュールに腐食が見つかったことを公的に認めました。この腐食は、北米航空宇宙局認定のプロセスを使用してノースロップ・グロムナが修復を完了し、第3四半期末までには修復完了を目指すとしています。
製造上の不都合が原因であると明らかにされ、フランス・イタリアの防衛・空間企業であるテールズ・アルレニア・スペースがHALOの主構造を製造したことが明かされました。イタリアからアメリカへ約1年前に送られたこのモジュールは、腐食状態であったとされています。
エュロペアースペイス局は「ティガー・チーム」を設置して調査を行い、I-HABモジュールの状況がHALOよりも良いことから技術的に制御可能であると判断しました。さらに、軌道宇宙ステーション「アキームスペース」も同様の腐食問題に直面していることが明らかになりました。
これらの問題は2030年以降のステーションの活用を遅らせる可能性がありますが、修復作業によって影響は限定的であるとされています。
In March, NASA Administrator Jared Isaacman announced that the moon-orbiting "Lunar Gateway" space station was being "paused" to focus instead of missions to the moon's surface. And Ars Technica agrees that the project was essentially "spending billions of dollars to make it more difficult to reach the lunar surface and faced the prospect of watching Chinese astronauts wander around on the Moon from orbit instead of being there themselves."
"But this week, we learned another reason that Gateway is going away, and it's pretty shocking."
During testimony before the US House Committee on Science, Space, and Technology, Isaacman faced questions about NASA's budget... He then publicly confirmed rumors (reported last month by Ars) that there is corrosion in both the HALO [Habitation and Logistics Outpost] and I-HAB modules of the Gateway. "The only two habitable volumes that were delivered — both were corroded," Isaacman said. "And that's unfortunate because it would have delayed, probably beyond 2030, the application of Gateway...."
In a statement, Northrop confirmed the issue as well. "Using NASA-approved processes, Northrop Grumman is completing repairs to HALO after a manufacturing irregularity," a company spokesperson told Ars. "We expect to complete repairs by the end of the third quarter. HALO can still be repurposed for any mission, and it's the most mature technology to support a deep space or lunar habitat." By referring to a "manufacturing irregularity," Northrop answered the central mystery here: how corrosion could appear in both modules. This is because a French-Italian space and defense company, Thales Alenia Space, built the primary structure of HALO for Northrop Grumman. The module was delivered from Italy to the United States about a year ago
Thales is a powerhouse of the European space industry. It built several pressurized modules of the International Space Station, and it's working with Axiom Space to build its commercial space station. The company also had a big piece of the Lunar Gateway in addition to HALO, developing the I-HAB module and a future communications and refueling module known as ESPRIT... After the issue was discovered, the European Space Agency established a "tiger team" to investigate. "Based on the investigation and available data, the corrosion issue was understood to be technically manageable and did not constitute a showstopper for I-HAB, which was, in any case, in better conditions than HALO from [a] corrosion point of view," the spokesperson said...
After publication of this story on Friday, Axiom Space confirmed that it has also experienced corrosion issues. In a statement, the company said: "Axiom Space has experienced a similar phenomenon with the first module; we are leveraging the expertise of NASA and Thales Alenia Space to address the issue. Module 1 is on track to launch in 2028."
Read more of this story at Slashdot.