Manchester, England—Rolls-Royce’s power gearbox (PGB) for the UltraFan engine has reached 70,000 hp during tests in Dahlewitz, Germany, marking a key step towards development of the company’s next generation turbofan family. The milestone, which was announced at the International Society for Air Breathing Engines (ISABE) conference here by Paul Stein, chief technology officer at Rolls-Royce, comes only four months after full-scale tests of the PGB began in the power rig ...

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