CFM Evaluating Tech Insertion Package For CFM56-5B And CFM56-7B Engines
Published on 18th July 2004
Once the program is launched, Tech Insertion could be certified by early 2007. It will be introduced into both new production engines, and will also be offered as an upgrade kit. The package includes improvements to the high-pressure compressor, the combustor, and the high- and low-pressure turbines. It will help customers to lower overall operating costs through lower maintenance costs, longer time on wing, lower fuel consumption, and reduced airport taxes from lower NOx (nitrogen oxides) emissions.
CFM has designed new high-pressure compressor blades using advanced aerodynamic analysis and design methods developed as part of Project TECH56. This design improves efficiency and decreases deterioration by reducing sensitivity to open clearances.
Using advanced analytic tools developed for the TAPS (twin-annular pre-swirl) combustor, CFM has improved the cooling in the current CFM56 single-annular combustor in order to reduce NOx emissions, providing margin to the CAEP 6 emissions regulations scheduled to take effect in 2008.
Changes in the turbine include a new low-shock high-pressure turbine blade contour, which was validated as part of Project TECH56. The blade design lowers the interaction loss between the high- and low-pressure turbines. When combined with additional durability improvements, the high- and low-pressure turbines reduce fuel burn through improved efficiency, and lower maintenance costs. The design also includes a more durable low-pressure turbine nozzle with modified cooling.
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A 50/50 joint venture between GE Aerospace and Safran Aircraft Engines, CFM International has redefined international cooperation and helped change the course of commercial aviation since its founding in 1974. Today, CFM is the world’s leading supplier of commercial aircraft engines with a product line that sets the industry standard for efficiency, reliability, durability, and optimized cost of ownership. CFM produces the LEAP family of engines and supports LEAP and CFM56 fleets for operators worldwide. For the future of air transport, CFM’s RISE program is accelerating development of new propulsion technologies that will pave the way for the next generation of aircraft. Discover more at www.cfmaeroengines.com