Boeing and Derlan Aerospace of Canada signed an agreement to develop components for a new transmission for the AH-64D Apache Longbow. Derlan said the contract is estimated to be worth more than $500 million over 10 years. The agreement calls for Derlan to help develop a "split-torque" face gear technology that will be used in the new transmission. Derlan will make the face gears using a Boeing-patented continuous grinding process. Boeing said it has been working on the ...

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