Almost three full decades ago a battle was raging over the powerplant options for what was then the all-new Airbus A320. The competitors–CFM International and International Aero Engines (IAE)–were making claim and counter-claim as to the potential advantages their respective engines would bring to the aircraft, which had been developed to grab a slice of the huge single-aisle market until then dominated by the ubiquitous Boeing 737.
Overall pressure ratio
With positive early test results and an accelerating work schedule, Rolls-Royce is confident it can deliver the Trent XWB as a mature engine, ready for full production before the end of 2014. Related technology programs are said to be on track in terms of high temperature and thrust.
Boeing Business Jets and Airbus Corporate Jetliners could benefit from new engine technology planned to enter service on the next-generation 737 and A320 airliners from which they are respectively derived. CFM International is working on an advanced turbofan, targeting a 16-percent cut in fuel burn that could bring greater efficiency to these and other new bizliners.
Snecma remains “very satisfied” with the performance of its Silvercrest core engine demonstration program despite its failure to secure a launch platform for the new-generation turbofan.
CFM International partners General Electric and Snecma have extended their successful 34-year partnership until 2040 and revealed plans to develop an all-new engine, provisionally called the Leap-X. The engine will provide 16 percent more fuel efficiency than today’s CFM56; however, it will not be offered for retrofit to existing aircraft.
French engine manufacturer Snecma is developing a new high-pressure core for regional jet applications, dubbed DEM 21 for “21st century demonstrator,” in the 12,000- to 17,000-lb-thrust range. The program may provide the basis for variants capable of powering regional airplanes of up to 70 seats.
Though still without a launch program for its new 9,500- to 12,000-pound-thrust engine, Snecma has reported good progress in development work for its new Silvercrest powerplant series for large business jets and small regional airliners. As of
the end of January, the French manufacturer had completed 35 hours of combustion testing since starting work on this phase of the $100 million development on Nov. 30, 2007.