The GEnx is intended to succeed the CF6 in GE's product line. Follow GE Aviation on Twitter and YouTube. The whole engine weighs 6 tonnes and can produce 76,100 pounds of thrust. 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 GEnx engine is also demonstrating better fuel burn on the 787, and as a result, GEnx-powered 787s are flying routes that would be challenging … 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. [18], Fan blades have steel alloy leading edges and the composite fan case reduces thermal expansion. The GEnx was expected to produce thrust from 53,000 to 75,000 lbf (240 to 330 kN) with first tests commencing in 2006 and service entry by 2008 (delayed by 787 deliveries). [14] The GEnx is intended to succeed the CF6 in GE's product line. The Lean TAPS combustor reduces NOx gases with required pressure loss and backflow margin. It operates through the following segments: Power, Renewable Energy, Aviation, Healthcare, and Capital. ゼネラル・エレクトリック GEnx (General Electric Next-generation)とはGE・アビエーションがボーイング787、747-8用に開発された次世代型高バイパス比ターボファンエンジンである。 GEnxはGEの製品群において既存のCF6を置き換える事を予定している。 最新型のGEnx-2Bは2008年 2月29日に最初の運転 … 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. ROCE Insights For General Electric. [8] In the summer of 2012, three engines suffered Low Pressure Turbine (LPT) failures. The GEnx and the Rolls-Royce Trent 1000 were selected by Boeing following a run-off between the three big engine manufacturers. Boeing is working with GE on software solutions to the problem. The GEnx is part of GE's "ecomagination" product portfolio - GE's business strategy to develop new, cost-effective technologies that enhance customers' environmental and operating performance. 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 General Electric GEnx (G eneral E lectric N e x t-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 GEnx-2B contains an identical core and similar materials as the GEnx-1B to provide synergies for mixed GEnx fleets. The -2B is the sole powerplant on the new 747-8, and the -1B powers the 787 Dreamliner. 2. General Electric GEnx (ang. [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. 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. To reduce fuel burn, the 23:1 pressure ratio high-pressure compressor is based on the GE90-94B, shrouded guide vanes reduce secondary flows and counter-rotating spools for the reaction turbines reduce load on guide vanes.[19]. Watch the GEnx animated overview from GE Aviation. Sales, however, increased by 9.39% over the previous quarter to $19.42 billion. The age ranges and birth years for Generation Z are now included with Millennials, Generation X, and Baby Boomers in Pew Research's official generational definitions. It received its FAA type certificate on September 25. Nozzles with proven reliability and contributing to increased fuel efficiency on the GEnx engine. The GEnx is the fastest-selling, high-thrust jet engine in GE Aviation history with more than 1,300 engines on order. [6] The first flight with one of these engines took place on 22 February 2007, using a Boeing 747-100, fitted with one GEnx engine in the number 2 (inboard left hand side) position. [17] It also introduces Titanium Aluminide blades to stages 6 and 7, reducing engine weight by approximately 400 lbs. General Electric began initial test runs of the bleedless GEnx variant on 19 March 2006. nozzles on General Electric’s GEnx, the high-efficiency, ultra-quiet, ultra-perfor-mance engine selected to power the Boeing Dreamliner and 747-8. [11] Therefore, if an engine could produce 2.2 pounds of thrust, it could accelerate a 1 kilogram block at 9.8m/s². Information for this article was provided by GE Aviation in Cincinnati, OH. These leading-edge technologies and the engine's elegant architecture bring in high operational reliability, excellent utilization rate and route flexibility for more flights per year and more revenue for airlines. ANA ANA opts for GEnx for latest 787-order. 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.) 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. 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. 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 787 main electrical power generation and start system is a four-channel variable frequency system with two 250 kVA VFSGs on each of the two main engines. 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 company produces products ranging from toasters and clock radios to healthcare devices to the GEnx jet engine for the Boeing 787 aircraft. The General Electric GEnx (General Electric Next-generation) is an advanced dual rotor, axial flow, high-bypass turbofan jet engine in production … The GEnx engine represents a giant leap forward in propulsion technology, using the latest materials and design processes to reduce weight, improve performance and deliver a more fuel-efficient commercial aircraft engine. The engine carries composite technology[5] into the fan case. [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. [8] In March 2016, the US FAA ordered emergency fixes on the GEnx-1B PIP2. The General Electric GE9X is a high-bypass turbofan developed by GE Aviation exclusively for the Boeing 777X. A 66,500 lbf (296 kN) thrust version (GEnx-2B67) will be used on the 747-8. “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. Unlike the initial version, for the 787, this version has a traditional bleed air system to power internal pneumatic and ventilation systems. Optimized for the Boeing 747-8 airplane, the GEnx-2B engine features a smaller fan, de-staged booster and de-staged low-pressure turbine. The engine market for the 787 is estimated at US$40 billion over the next 25 years. "Uzbekistan Airways Selects GEnx engines for Boeing 787 Dreamliners", "China Eastern Selects GEnx Engine to Power Its Boeing 787 Dreamliners", "Volga-Dnepr Group Signs MOU for Additional GEnx-Powered Boeing 747-8 Aircraft", "FAA Orders 'Urgent' 787 Repair After Engine Fails at 20,000 Feet", "The Innovative 787 Carries Boeing, And Aviation, Ahead", General Electric Performs First Run of New GEnx Engine, "GE In Talks With Airbus Over Potential A350neo", "Issues With Newest Engines Provide Early MRO-Proving Opportunities", "GE identifies installation issue in GEnx, orders inspections", "Icing Hazards Surface on Boeing's Newest 747 Jet", "GE-powered JAL 787 has in-flight shutdown", "FAA orders engine icing fixes for GEnx-powered Boeing 787 Dreamliners", "FAA Orders Urgent Fixes For Boeing 787 Dreamliners", "Airbus and Boeing are head-to-head in the widebody sector", "GE wraps up GE9X trials as 777X flight tests near", "Designing High-Tech Engines For Easier Maintenance", "Type certificate data sheet number E00078NE, Revision: 14", "General Electric's GEnx-1B engine for the Boeing 787 makes first flight on 747 testbed", "GE plans mid-July nod for GEnx siblings", https://en.wikipedia.org/w/index.php?title=General_Electric_GEnx&oldid=987293869, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 November 2020, at 02:57. 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. After introducing composite fan blades on the GE90 engine in 1995, GE Aviation is taking the technology to a new level with the GEnx. [7], Introduced in late 2011 on a 747-8 freighter, Cargolux surpassed one million flight hours in early 2017. 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. The GEnx uses some technology from the GE90 turbofan,[4] including swept composite fan blades and the 10-stage HPC featured in earlier variants of the engine. [16], It stays on wing 20% longer, uses 30% fewer parts to lower maintenance costs and has a contra-rotating architecture. The GEnx has been designed to reduce weight, improve performance, and lower maintenance costs. The power from these generators is supplied to the main load buses through generator feeders and generator circuit breakers (see fig. Key to GEnx engine's performance are its high pressure compressor, lean-burning combustor and lightweight durable composite materials, including the world’s first composite fan case and fan blades for commercial aircraft. Zürich, Switzerland - March 08, 2015: Detail of fan blades and inlet guide vanes of a General Electric GEnx engine at Zurich Airport. GEnx is a trademark of General Electric Company. [13] Abradable material in the casing in front of the fan blades was ground to keep them from rubbing when ingesting ice or debris on 330 GEnx PIP-2. [12] The airworthiness directive affects 43 Boeing 787 Dreamliners in the US. Parker nozzles are an integral part of the engine’s low-smoke, low-NOx, and low-CO performance. After the initial unveiling GE Aviation decided to offer the engine for the original Airbus A350 as… [8], In early 2018, of 1277 orders for the B787, 681 selected the GEnx (53.3%), 420 the Rolls-Royce Trent 1000 (32.9%) and 176 were undecided (13.8%). (3) For GE service information identified in this AD, contact General Electric Company, GE Aviation, Room 285, 1 Neumann Way, Cincinnati, OH 45215; phone: 513-552-3272; email: aviation.fleetsupport@ge.com. 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. 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. Fuel efficiency is improved by 15% compared to the CF6, the bypass ratio reaches up to 9.0:1 and the overall pressure ratio up to 58.1:1. 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. General Electric Next Generation) – udoskonalony silnik turbowentylatorowy amerykańskiej firmy General Electric stosowany w samolotach Boeing 787 Dreamliner (GEnx-1B) oraz Boeing 747-8 (GEnx-2B). In January 2016 a Japan Airlines 787 had an inflight shutdown after flying through icing conditions, caused by ice formed on fan blades and ingested: the blades moved forward slightly and rubbed on the abradable seal in the casing. General Electric Genx: Country: United States of America: Developed in: 2006: Type: Turbofan: List of aircraft accidents in the ASN database involving aircraft fitted with the General Electric Genx engine. 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. “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. 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. It will also have a smaller overall diameter than the initial model to accommodate installation on the 747. One failure was caused by an assembly problem, which led to inspections of all other engines then in service. The talks are a blow to Rolls-Royce, which is currently the only engine provider for the A330 and Airbus’s A350 wide-body. They are 2 different engines, designed and produced by different manufacturers to fit the same basic requirement: powering the 787. The GEnx low-pressure turbine (LPT) is lighter and more efficient than its predecessor and incorporates next-generation 3D aerodynamics. Figure 3: 787 Engine start system schematic—GEnx Meanwhile, GE continues to work on a performance improvement packages (PIP) for both the GEnx-2B –the sole powerplant for the 747-8–and the … Qantas sets record for ultra-long trip, powered by GEnx Aviation Week GE Sees Military as Driving Next-Gen Technology GE Aviation. [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. Based on proven GE90 architecture, the GEnx engine offers up to 15% improved fuel efficiency and 15% less CO2 compared to GE’s CF6 engine. The GEnx family has two engine models, the -1B and the -2B. 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. [15], The GEnx is derived from the GE90 with a fan diameter of 111.1 in (282 cm) for the 787 and 104.7 in (266 cm) for the 747-8. GEnx is the best-selling engine on the 787 Dreamliner in addition to powering the four-engine Boeing 747-8. For fixed values Tmax and Tmin, the n… 3). Boeing selected two new engines to power the 787, the Rolls-Royce Trent 1000 and … To reduce weight, it features 18 composite fan blades, a composite fan case and titanium aluminide stage 6 and 7 low-pressure turbine blades. The General Electric GEnx (General Electric Next generation) is an advanced turbofan under development by GE Aviation for the Boeing 787 747 8. General Electric (NYSE:GE) posted a 107.91% decrease in earnings from Q2. The GEnx is a massive bit of kit. General Electric GEnx 4 Articles. Aviation Week this weekend broke the news that Airbus and General Electric are discussing possible new versions of the A350XWB twin-aisle … General Electric Co. General Electric Co. is a technology and financial services company. By Fall 2019, General Electric was offering the GEnx-2B, developed for the 747-8, for the revised 767-XF variant based on the 767-400ER, but needed enough volume to cover the new product certification. Taking the 76,000 pounds of thrust, which the GEnx ca… (ii) GE SB GEnx-1B S/B 72-0424, Revision 04, dated December 3, 2018. Among the possible factors cited was "'unique convective weather systems' such as unusually large thunderstorms reaching high altitudes." Overall pressure ratio (takeoff / top-of-climb). It has a 10 stage high-pressure compressor and is quieter, helped by larger, more efficient fan blades. GE’s GEnx engine is an option on Boeing Co. ’s 787 Dreamliner wide-body. GEnx is the best-selling engine on the 787 Dreamliner in addition to powering the four-engine Boeing 747-8. With the highest pressure ratio compressor in commercial service today, the GEnx has the best fuel efficiency in its thrust class, enabling it to power many of the longest routes. The GEnx is intended to replace the CF6 in GE's product line. 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. In addition to powering the four-engine Boeing 747-8, the GEnx engine is also the best-selling engine for the Boeing 787 Dreamliner. Aircraft types in the ASN database fitted with the General Electric Genx engine: The entire wiki with photo and video galleries for each article The carbon-fiber composite fan blades on the GEnx engine feature a new, more efficient design, a reduced blade count (from 22 to 18 fan blades) and a composite fan case for further weight reduction. 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. The front rotating fan measures 2.82 meters across. GE Aviation has a global service network to support these offerings. 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