Rolls-Royce Holdings Plc’s North America unit beat General Electric Co. and incumbent Pratt & Whitney to provide upgraded engines for the Air Force’s aging B-52 bomber in an award that could grow to $2.6 billion, the Pentagon announced Friday. Rolls-Royce was given an initial $501 million, six-year base contract to supply 608 engines, as well as spares, sustainment and engineering data through 2038 for installation on the Air Force’s 76 active-duty and reserve B-52s. Each plane has eight… (www.msn.com) 更多...