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It was the largest jet engine, [3] until being surpassed in January 2020 by its successor, the 110,000 lbf (490 kN) GE9X, which has a larger fan diameter by 6 inches (15 cm). However, the GE90-115B, the most recent variant of the GE90, is rated for a higher thrust (115,000 lbs) than the GE9X.
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 engine is the largest reciprocating engine in the world. The 14-cylinder version first entered commercial service in September 2006 aboard the Emma Mærsk. The design is similar to the older RTA96C engine, but with common rail technology (in place of traditional camshaft, chain gear, fuel pump and hydraulic actuator systems).
Development of the NK-6 started in 1955 at the Kuznetsov Design Bureau. [2] It was the first afterburning by-pass engine made in the Soviet Union. [1] With a maximum thrust of 216 kN (49,000 lbf), it was the most powerful jet engine in the world in the early 1960s. [2]
Within two months the engine had already passed 100 hours of running time, and on 10 May had reached its design thrust of 6,000 lbf (27 kN). At the time, it was the most powerful jet engine in the world, although it held this record only briefly until the Rolls-Royce Avon RA.3 was introduced the next year.
The General Electric GE4 turbojet engine was designed in the late 1960s as the powerplant for the Boeing 2707 supersonic transport. [ 1 ] [ 2 ] The GE4 was a nine-stage, single-shaft, axial-flow turbojet based largely on the General Electric YJ93 which powered the North American XB-70 bomber. [ 3 ]
The GE Passport is a high bypass ratio turbofan. The engine is a twin-spool, axial-flow turbofan with a high bypass ratio of 5.6:1 and an overall pressure ratio of 45:1. The front fan is attached to the three-stage low-pressure compressor; the 23:1 pressure ratio 10-stage high-pressure compressor includes five blisk stages for weight reduction.
The Nene was a complete redesign, rather than a scaled-up Rolls-Royce Derwent, [1] with a design target of 5,000 lbf (22 kN), making it the most powerful engine of its era. First run in 1944, it was Rolls-Royce 's third jet engine to enter production, and first ran less than 6 months from the start of design.