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Test running is in progress with a 535E4 development engine with a high‐efficiency wide‐chord fan. This engine is being developed for service in Boeing 757 airliners from 1984. Its advanced fan incorporates technology unique to Rolls‐Royce. Recent testing has shown that this new fan reduces fuel consumption by over 2½% compared with the earlier design of fan on the initial 535C engine.
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© MCB UP Limited
1982
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