Initial Operational Capability (IOC):
26 March 2012
Also Known As: GEnx 1A and GEnx-1B64
Origin: United States of America
Avio, General Electric Aviation*, Hanwha Techwin, Ishikawajima-Harima Heavy Industries (IHI), Techspace Aero and Volvo Aero (*) lead contractor
Parent System: GENX
Initial Operational Capability (IOC):
12 October 2011
Family Members: GEnx 2B
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Description: The GENX (General Electric Next Generation) commercial engine is being developed to power the newest Boeing 787 Dreamliner aircraft. It will produce 55,000 to 70,000 pounds of thrust with the first engine going to test by 2006 and certification expected one year later. Seven engines will be dedicated to the engine certification effort and two engines to long-term endurance testing. In December 2004, Airbus launched the A350 passenger aircraft project which was reported would be powered by General Electric's GEnx engines. Boeing selected GEnx engine to power its newest 747-8 family of aircraft in November 2005.
It will receive architectural design and solutions from high-thrust GE90 engine. GENX will feature composite front fan blades derived from the GE90 engine, a high-pressure ratio compressor derived from GE90 with fuel efficiency and all-electric modifications due to 7E7/787 requirements, and a twin-annular combustor to achieve lower emissions. A final design for the GEnx engine is anticipated in early 2005. General Electric Aircraft Engines also envisages the GEnx as the replacement for the successful CF6 family of engines with a 15% in specific fuel consumption improvement over CF6-80C2 wide-body aircraft engine. The new engine will future lower noise and high bypass ratio of almost 9.5 to 1 with a 111-in front-fan.
The fan case made of composites and based on the GE90 engine will provide a weight reduction of 400 pounds (181 kg). The GEnx fan blade design will be based on the GE90 engine as well. Both front fan case and fan blade are made of composite materials that will provide greater engine durability and dramatic weight reduction. The 10-stage high pressure compressor is based on the GE90-94B and will remain as the highest pressure-ratio compressor available.
The combustor will incorporate a twin-annular, pre-swirler lean-burning design that allows for efficient fuel mixing before ignition, resulting in significantly lower NOx levels and better hot section life. Finally, the two-stage high-pressure first turbine is followed by multi-stage, counter-rotating, low-pressure turbine (LPT). The counter-rotating low pressure turbine is the key element introduced by GE to achieve improved fuel burn and fewer parts in both turbines.
On 13 August 2004, General Electric announced that had reached an agreement with Ishikawajima-Harima Heavy Industries (IHI) of Japan, and Avio SpA. of Italy to be revenue-sharing participants (RSPs) on the new GEnx Jet engine. IHI and Avio will be responsible for design and manufacture of approximately 27% of the entire GEnx program. IHI will be charged with the low pressure turbine, while Avio will assume overall responsibility for the engine gearboxes.
GEnx final design is expected in early 2005. The first full engine will undergo tests beginning in 2006 and followed by engine first flight. The engine certification is anticipated by 2007. Early engine tests began in the late 2004 in Evendale, Ohio, using a representative engine with the front fan case and fan blades made of composites. On January 20, 2005, General Dynamics announced that five international partners comprising Ishikawajima-Harima Heavy Industries (IHI) of Japan, Avio SpA of Italy, Volvo Aero of Sweden, Techspace Aero of Belgium and Mitsubishi Heavy Industries (MHI) of Japan will have approximately 36 percent share of the GENX engine. Following fierce competition between Airbus and Boeing, GENX will be designed to power both Boeing 7E7/787 and Airbus A350 twin-engine, wide-body long range jetliners.
In early February 2005, UK-based First Choice Airways signed a Memorandum of Understanding (MoU) with General Electric Transportation to purchase GENX engines to power six Boeing 787 Dreamliners. The MoU also included options for powering six additional Dreamliners. This way First Choice became the first customer for the new generation General Electric engine.
The Boeing company selected General Electric's GEnx engine to power the proposed Advanced 747 airplane featuring more payload and more range than current 747s. The Advanced 747 would be able to travel 8,000 nautical miles (approx. 15,000 kilometers) carrying 450 passengers. Boeing anticipated a potential for the Advanced 747 ranging from 250 to 300 airplanes.
On 14 September 2005, Qatar Airways selected General Electric GENX engine to power its newest fleet of Airbus A350 airliners. The Memorandum of Understanding (MoU) signed between General Electric and Qatar Airways included motorization of 60 A350-800/900 airplanes beginning in 2010. The engine contract was valued at $1.6 billion. On 30 September 2005 US operator Continental Airlines selected General Electric GEnx engines to power its Boeing 787 fleet which was formed by ten aircraft. The engine contract was valued at $250 million with first engine deliveries projected by 2009.
Air Canada selected General Electric GEnx and GE90 engines to power a new order for 787 and 777 aircraft on November 9, 2005. GEnx engines were chosen to power Air Canada's 14 firm Boeing 787 airliners to be delivered beginning in 2010 . The engine contract valued at more than $400 million. Japan Airlines (JAL) selected the General Electric's GEnx engine to power its 30 firm and 20 option Boeing 787 airplanes, which would be delivered beginning in 2008, on November 28, 2005. The deal was valued at more than $700 million. In early January 2006, TAM selected General Electric GEnX engine to power 10 Airbus A350-900 airplanes which were expected to be delivered to the Brazilian carrier from late 2012 onwards.
On June 6, 2006, Boeing and Continental Airlines announced an agreement for the purchase of 10 Boeing 787-8 Dreamliners and an undisclosed mix of 24 Next-Generation 737 airplanes. All in, the aircraft deal was valued at $3 billion at list prices. Boeing 787 deliveries to Continental were scheduled to commence in 2009 and 737 deliveries in 2008. On 21 June 2006, Continental Airlines selected the General Electric GEnx engine to power its 787 aircraft. The engine contract was valued at $250 million.
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