What does CFM56 stand for?
CFM is not an acronym, so it doesn’t stand for anything. The company (CFM), and product line (CFM56), got their names by a combination of the two parent companies’ commercial engine designations: GE’s CF6 and Snecma’s M56. CFM International is a Franco-American aircraft engine manufacturer. The company is a joint venture between GE Aerospace and Safran Aircraft Engines (formerly known as Snecma) and is headquartered in Cincinnati, Ohio. It was founded in 1974 to build and support the CFM56 series of turbofan engines.Known worldwide for engineering excellence, safety, and efficiency, CFM International has transformed aviation with its groundbreaking aircraft engine technology.What Does CFM Stand For? CFM stands for Cubic Feet per Minute, a measurement used in the HVAC industry to quantify the volume of air flowing through a system.CFM means CFM International (CFM), which is a joint venture between: GE Aerospace (United States), and, Safran Aircraft Engines (formerly Snecma, France) The name CFM comes from the combination of: CF for the CF6, a GE engine program – CF stands for Commercial Fan. It was introduced as part of GE’s engine .
What is the rpm of a CFM56 engine?
The fan on a CFM56 engine typically rotates at around 5000 rpm during takeoff, and idles around 1,000 rpm. The new gearbox allows for different shafts to rotate in order to spin the turbine and the fan, allowing the engine to have two different RPM numbers. For the fan, the typical RPM is roughly around 3,200, with the turbine’s RPM reaching as high as 10,000, according to Aviation Week.
Which planes use CFM56?
The CFM56 engine family comprises five different models covering the thrust classes from 18,500 to 34,000 pounds. CFM56 engines are used in the twin-engine Airbus A320 family, in the first generation of the A340-200/-300 long-haul jet, and in the Boeing 737 Classic and 737 Next Generation. The CFM56-2 comprises a single-stage fan with 44 blades, with a three-stage LP compressor driven by a four-stage LP turbine, and a nine-stage HP compressor driven by a single-stage HP turbine.
What is the lifespan of a CFM56 engine?
The cfm56 engine can stay on wing for as many as 20,000 cycles, with an average time on wing (tow) of 18,000 cycles to its first overhaul; that’s approximately nine years without removing the engine for heavy maintenance [see time to first shop visit chart below; tow data accumulated from cfm’s fleet data management ( . Since its introduction in the 1980s, the cfm56 engine product line has continued to serve as the industry benchmark for single-aisle commercial jet engines in terms of reliability, fuel efficiency, time on wing, and overall cost of ownership.