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• Designers have substituted an Advanced Induction Motor (AIM) for the planned Permanent Magnet Motor (PMM) in the ship’s power system after the PMM failed in tests earlier this year. Although the AIM incorporates proven technology, it is heavier, larger, noisier and less power-dense than the PMM, requiring several changes in the ship’s design.
• The volume search portion of the dual-band radar still is encountering technical problems, although the multifunction radar has successfully completed its tests to date.
• Fire and shock testing for the composite-construction superstructure have been delayed due to questions about the materials to be used.
• The peripheral missile launch system needed to be redesigned after an “immense explosion” caused damage during tests a year ago.