What is the difference between turbofan and geared turbofan?
A geared turbofan engine is a variant of a conventional turbofan engine in which a reduction gearbox is installed between the fan and the low pressure (low speed) turbine. In a conventional turbojet engine, the fan, low pressure compressor and low pressure (low speed) turbine are all rigidly joined by a single shaft. A geared turbofan uses a larger fan that moves more air at a lower speed, allowing the same thrust as its nongeared counterpart, but with less energy expended.Assuming the turbofan’s core and the turbojet are the same size, the turbofan pushes more air due to the bypass air. More thrust for the same amount of power means the turbofan does not need to burn as much fuel as the turbojet to create the same amount of thrust. This means that the turbo fan is more fuel efficient.
What is the most powerful GE turbofan engine?
The GE9X is the largest and most powerful commercial aircraft engine ever built, incorporating advanced technologies that enable more efficient, quieter flight with fewer emissions. The GE9X is the most powerful aircraft engine in history and the quietest GE engine ever produced (pounds of thrust per decibel). The engine will bring up to 10% specific fuel consumption improvement compared to the GE90-115B.Powering the twin-engine Boeing 777 aircraft, the GE90 engine combined record thrust and high reliability with lower noise, emissions, and fuel consumption to become an iconic jet engine recognized worldwide for its size and innovations.It was the largest jet engine, 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.GE Aerospace GE90 The GE90 is the most powerful commercial jet engine in service today. Powering the Boeing 777 family aircraft, the engine was first to set a world record for 127,900 Ibf of thrust during tests.Technical comparison. The GE9X is the largest commercial aircraft engine with a fan diameter (134 inches / 340 cm) nearly equal to the fuselage width of the Boeing 737. The GE9X can produce 134,300 bf (pound-force) of thrust and is 5% more powerful than GE90.