NYT: Boeing Presents Solution for Dreamliner Problems

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  1. NYCUA1K

    NYCUA1K Gold Member

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    TOKYO — Boeing executives said on Friday that they expected commercial flights of the company’s troubled new Dreamliner jet to resume within weeks and that the company was fully confident that it had eliminated all risk of fire or smoke from its batteries, defending its use of the volatile lithium-ion technology.

    Making an ardent pitch in Japan, home to two of the largest buyers of its next-generation 787 plane, Boeing said that more than 500 engineers had worked with outside experts to put in more than 200,000 hours of analysis, engineering work and tests to understand what may have caused the batteries to overheat in two aircraft in January. Those incidents prompted American and Japanese regulators to ground the 50 Dreamliners already delivered.

    Michael K. Sinnett, the Dreamliner’s chief engineer, acknowledged that Boeing had not pinned down the exact cause of the overheating, and said the company might never know what, and by extension who, is responsible. A lithium-ion battery caught fire aboard a parked plane operated by Japan Airlines; another emitted smoke during an All Nippon Airways flight, forcing the jet to make an emergency landing.
    The batteries are made by the Japanese manufacturer GS Yuasa of Kyoto. The Japanese have not yet ruled out that a problem other than the battery, such as a surge in current, could have caused the malfunction. But Boeing has ruled out any possibility the batteries may have been overcharged, citing measurements from instruments aboard the plane.

    [....]
    Mr. Sinnett said that about 75 percent of Boeing’s test plans for the 787 had been approved and that 25 percent of the testing was complete. He said that he expected flights to resume in weeks, and if Boeing missed that time frame, it would “be by a little, not by a lot.

    “I get often asked whether the airplane is still safe,” Mr. Sinnett said. “My answer is ‘absolutely.’ I’d gladly have my family fly in this airplane.”
    [...]

    [emphasis added]

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  2. dtc

    dtc Active Member

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  3. jbcarioca
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    jbcarioca Gold Member

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    It is interesting that the proposed solution eliminated weight savings from ni-cads.
     
  4. jbcarioca
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    jbcarioca Gold Member

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