Both engines enable the move towards the More Electric Aircraft, that is, the concept of replacing previously hydraulic and pneumatic systems with electrical ones to reduce weight, increase efficiency, and reduce maintenance requirements. A 66,500 lbf (296 kN) thrust version (GEnx-2B67) will be used on the 747-8. (ii) GE SB GEnx-1B S/B 72-0424, Revision 04, dated December 3, 2018. The talks are a blow to Rolls-Royce, which is currently the only engine provider for the A330 and Airbus’s A350 wide-body. It also introduces Titanium Aluminide blades to stages 6 and 7, reducing engine weight by approximately 400 lbs. For fixed values Tmax and Tmin, the n… General Electric Co. General Electric Co. is a technology and financial services company. The GEnx and the Rolls-Royce Trent 1000 were selected by Boeing following a run-off between the three big engine manufacturers. Parker nozzles are an integral part of the engine’s low-smoke, low-NOx, and low-CO performance. The pilots were able to land the plane safely but the engines were found to have sustained damage. [8], In March 2014, a GEnx-powered Boeing 787 had its first in-flight shut down in operation when a JAL flight had to divert to Honolulu after an oil pressure alert, bringing its in-flight shut down rate to 1 per 278,000 hours. [16], It stays on wing 20% longer, uses 30% fewer parts to lower maintenance costs and has a contra-rotating architecture. It first ran on ground in April 2016 and first flew on March 13, 2018; it powered the 777-9's maiden flight in early 2020. A first is the elimination of bleed air systems using high temperature/high pressure air from the propulsion engines to power aircraft systems such as the starting, air-conditioning and anti-ice systems. The 2,000th GEnx was delivered by November 2019, 15 years after the engine launch, as it logged 4.5 million flight cycles and 26 million hours among 60 operators. The engine carries composite technology[5] into the fan case. Gen X: Gen X was born between 1965 and 1979/80 and are currently between 40-55 years old (65.2 million people in U.S.) Gen Y: Gen Y, or Millennials, were born between 1981 and 1994/6. The GEnx-2B contains an identical core and similar materials as the GEnx-1B to provide synergies for mixed GEnx fleets. “A pound of thrust is equal to a force able to accelerate 1 pound of material 32 feet per second per second.” Let’s break that down: 32 feet per second is the same as the force of gravity — 9.8m/s². The GEnx family has two engine models, the -1B and the -2B. They are currently between 24-39 years old (72.1 million in the U.S.) Gen Y.1 = 25-29 years old (around 31 million people in U.S.) Nozzles with proven reliability [7], Introduced in late 2011 on a 747-8 freighter, Cargolux surpassed one million flight hours in early 2017. General Electric GEnx 4 Articles. The GEnx is the fastest-selling, high-thrust jet engine in GE Aviation history with more than 2,700-plus engines in-service and on order. The GEnx-1B has won about a 65 percent share of the Boeing 787 propulsion market to date, and nearly 90 percent in the last 12 months, claims GE. It operates through the following segments: Power, Renewable Energy, Aviation, Healthcare, and Capital. All Nippon Airways (ANA) latest commitment for up to 20 extra Boeing 787’s is not significant for the sheer number of aircraft, nor the sub-types (11 787-10s and up to 9 -9s). The Brayton cycle generalizes the operation of gas turbine engines and consists of four processes: adiabatic compression, isobaric combustion, adiabatic expansion, and isobaric heat rejection. To reduce maintenance cost and increase engine life, spools with lower parts count are achieved by using blisks in some stages, low blade counts in other stages and by using fewer stages; internal engine temperatures are reduced due to more efficient cooling techniques and debris extraction within the low-pressure compressor protects the high-pressure compressor. [18], Fan blades have steel alloy leading edges and the composite fan case reduces thermal expansion. 2. nozzles on General Electric’s GEnx, the high-efficiency, ultra-quiet, ultra-perfor-mance engine selected to power the Boeing Dreamliner and 747-8. General Electric began initial test runs of the bleedless GEnx variant on 19 March 2006. [17] [9], During the spring and summer of 2013, GE learned of four 747-8F freighters that suffered icing in their engines at altitudes of 40,000 feet and above. Idealized, the Brayton cycle describes the generation of fast moving fluid for thrust in jet propulsion and, more directly, dictates the relationship between thermal efficiency and pressure ratio, rp. Designed specifically for the Boeing 787 Dreamliner family, the GEnx-1B engine delivers up to 15% better specific fuel consumption than its predecessor, a 2% fuel burn advantage over its competition and a 1% advantage with respect to fuel burn retention. Boeing predicts reduced fuel consumption of up to 20% and significantly quieter engines than current turbofans. [10] Altitude was restricted until GE changed the software to detect the high-altitude ice crystals and open bleed air valve doors to eject them before they enter the core. Aviation Week this weekend broke the news that Airbus and General Electric are discussing possible new versions of the A350XWB twin-aisle … In addition to powering the four-engine Boeing 747-8, the GEnx engine is also the best-selling engine for the Boeing 787 Dreamliner. It will also have a smaller overall diameter than the initial model to accommodate installation on the 747. “The GEnx was the fastest selling engine in GE’s history, and now it’s the fastest production ramp up of a GE wide-body engine program,” says Tom Levin, general manager of the GEnx and CF6 engine product lines at GE Aviation. GE Aviation, an operating unit of GE (NYSE: GE), is a world-leading provider of jet and turboprop engines, as well as integrated systems for commercial, military, business and general aviation aircraft. The General Electric GEnx ("General Electric Next-generation") is an advanced dual rotor, axial flow, high-bypass turbofan jet engine in production by GE Aviation for the Boeing 787 and 747-8. The most serious incident involved an AirBridgeCargo freighter; on July 31, while at an altitude of 41,000 feet over China, the flight crew noted two engines surging while a third lost substantial power. One failure was caused by an assembly problem, which led to inspections of all other engines then in service. The entire wiki with photo and video galleries for each article The front rotating fan measures 2.82 meters across. The General Electric GEnx ("General Electric Next-generation") is an advanced dual rotor, axial flow, high-bypass turbofan jet engine in production by GE Aviation for the Boeing 787 and 747-8. Top and below: The 1,000th GEnx engine at GE's jet … and contributing to increased fuel efficiency on the GEnx engine. 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