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The GE90-115B diameter is 128 in (325 cm) while the 777 fuselage is 244 in (620 cm) The GE90's 10-stage high-pressure compressor developed a then-industry record pressure ratio of 23:1 and is driven by a 2-stage, air-cooled, HP turbine. A 3-stage low-pressure compressor, situated directly behind the fan, supercharges the core.
In February 2012, GE announced studies on a more efficient derivative of the GE90, calling it the GE9X, to power both the -8 and -9 variants of the new Boeing 777X.It was to feature the same 128 in (325 cm) fan diameter as the GE90-115B with thrust decreased by 15,800 lbf (70 kN) to a new rating of 99,500 lbf (443 kN) per engine. [1]
The resulting design changes were demonstrated in the 2005 Quiet Technology Demonstrator Two (QTD2) program in which a new Boeing 777-300ER, fitted with General Electric GE90-115B engines, was used for a three-week trial, again mainly at Boeing's flight test centre at Glasgow Industrial Airport.
It is built around an 0.72 scale of the GE90-110B/115B core [1] and contains a Pratt & Whitney fan and low-pressure system design. The competing Rolls-Royce Trent 900 was named as the lead engine for the then-named A3XX in 1996 and was initially selected by almost all A380 customers. However, the GE/PW engine increased its share of the A380 ...
The aircraft involved was a 16-year-old Boeing 777-312ER, [a] registered as 9V-SWM, with manufacturer serial number 34578 and line number 701. It was equipped with two General Electric GE90-115B engines and was delivered to Singapore Airlines in February 2008.
During the 2017 Dubai Airshow, Ethiopian Airlines placed a firm order for four Boeing 777 Freighters, valued at more than $1.3 billion at list prices; [59] [60] these aircraft will be powered with GE90-115B engines. [61]
31 January - GE90-115B receives FAR 33 certification; currently holds the world record for thrust and engine (fan) size for a gas turbine powered engine at 127,900 lb f of thrust and 128 inches, respectively [8] 26 November: Concorde retires from service
The Boeing 777 twinjet features the most powerful jet engine, the General Electric GE90. [23] The early variants have a fan diameter of 312 centimetres (123 in), and the larger GE90-115B has a fan diameter of 325 centimetres (128 in). [24] This is almost as wide as the 3.30 metres (130 in) Fokker 100 fuselage.