A Rolls-Royce logo sits outside the Rolls-Royce Holdings Plc factory in Derby, U.K., on Wednesday, Aug. 19, 2015. Rolls-Royce's XWB engine developed for the Airbus A350 should bring in twice the cash flow than the existing Trent 700 model on the Airbus A330, Chief Executive Warren East said in July. Photographer: Chris Ratcliffe/Bloomberg via Getty Images
