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The higher thrust GE90-110B1 and -115B engines, in combination with the second-generation 777 variants -200LR and -300ER, were primary reasons for 777 sales being greater than those of the rival A330/340 series. [19] Using two engines produces a typical operating cost advantage of around 8–9% for the -300ER over the A340-600. [20]
The Soloviev D-30 (now the Aviadvigatel PS-30) is a Soviet two-shaft low-bypass turbofan engine, officially referred to as a "bypass turbojet" [citation needed].It is one of the most powerful turbofan engines developed in the Soviet Union.
The effort continued with a 5,000 shp (3,700 kW), weighing 1,700 kg (3,700 lb), completed by 1947. Evolution to the TV-12 12,000 shp (8,900 kW) engine required extensive use of new Soviet-developed alloys and was completed in 1951. The NK-12 is the most powerful turboprop engine to enter service, ahead of the Europrop TP400 (in 2005).
The Kuznetsov NK-25 is a turbofan aircraft engine made by the Soviet Kuznetsov Design Bureau and used in the Tupolev Tu-22M strategic bomber. One of the most powerful supersonic engines in service today, it is rated at 245 kN (55,000 lbf) thrust. The three shaft engine was designed in the years 1972–1974.
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 Pratt & Whitney PW1000G family, also marketed as the Pratt & Whitney GTF (geared turbofan), is a family of high-bypass geared turbofan engines produced by Pratt & Whitney. Following years of development and testing on various demonstrators, the program officially launched in 2008 with the PW1200G destined for the Mitsubishi SpaceJet (a ...
The XWB-84 generates up to 84,200 lbf (375 kN) of thrust and the XWB-97 up to 97,000 lbf (431 kN). The engine has a 9.6:1 bypass ratio and a 50:1 pressure ratio. [58] It had its first in-flight shutdown on 11 September 2018, as the fleet accumulated 2.2 million flight hours. [59] It is the most powerful among all Trent engines.
The CFM56 is a high-bypass turbofan engine (most of the air accelerated by the fan bypasses the core of the engine and is exhausted out of the fan case) with several variants having bypass ratios ranging from 5:1 to 6:1, generating 18,500 to 34,000 lbf (80 kN to 150 kN) of thrust. The variants share a common design, and differ only in details.