644:
277:
331:
177:
339:
897:
36:
208:
66,500 lbf (296 kN) thrust version (GEnx-2B67) will be used on the 747-8. Unlike the initial version for the 787, this version has a traditional bleed air system to power internal pneumatic and ventilation systems. It will also have a smaller overall diameter than the initial model to accommodate installation on the 747.
248:
747-8F experienced a major engine malfunction that spread a significant amount of metallic debris on the runway when the low-pressure turbine shaft separated and shifted backwards, damaging the low pressure turbine blades and vanes. The NTSB issued urgent safety recommendations to the FAA to require
240:
On August 31, 2012, a GEnx-1B engine installed on a Boeing 787 that had not yet flown was found to have an indication of a similar crack on the fan midshaft. The fan midshaft was removed from the engine for further inspection and examination. As a result of investigative work the NTSB has determined
207:
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). Boeing predicts reduced fuel consumption of up to 20% and significantly quieter engines than current turbofans. A
261:, the flight crew noted two engines surging while a third lost substantial power. The pilots were able to land the plane safely but the engines were found to have sustained damage. Among the possible factors cited was "'unique convective weather systems' such as unusually large
310:
ordered emergency fixes on the GEnx-1B PIP2. The airworthiness directive affects 43 Boeing 787 Dreamliners in the US. 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.
398:
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.
1453:
252:
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 (12,192 m) and above. The most serious incident involved an
199:
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. Both engines enable the move towards the
322:(32.9%) and 176 were undecided (13.8%). 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.
294:
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. In January 2016 a
192:
turbofan, including swept composite fan blades and the 10-stage high-pressure compressor (HPC) featured in earlier variants of the engine. The engine carries composite technology into the fan case.
1107:
350:
with a fan diameter of 111.1 in (282 cm) for the 787 and 104.7 in (266 cm) for the 747-8. To reduce weight, it features 18 composite fan blades, a composite fan case and
383:
Fan blades have steel alloy leading edges and the composite fan case reduces thermal expansion. To reduce fuel burn, the 23:1 pressure ratio high-pressure compressor is based on the
1384:
1336:
204:, that is, the concept of replacing previously hydraulic and pneumatic systems with electrical ones to reduce weight, increase efficiency, and reduce maintenance requirements.
265:
reaching high altitudes." Boeing is working with GE on software solutions to the problem. Altitude was restricted until GE changed the software to detect the high-altitude
1498:
211:
In March 2006 General
Electric began initial test runs of the bleedless GEnx variant. The first flight with one of these engines took place on 22 February 2007, using a
237:
On July 28, 2012, the NTSB initiated an investigation of an engine failure that occurred on a Boeing 787 during a pre-delivery taxi test in
Charleston, South Carolina.
1036:
1460:
1582:
1543:
1111:
984:
1231:
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1156:
249:
ultrasonic scans for midshaft fractures before use of GEnx engines and require repetitive on-wing inspections of the engine to detect cracks.
1357:
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1268:
2012:
1391:
241:
that the fan midshafts on the GEnx engines fractured or cracked at the forward end of the shaft where the retaining nut is installed.
1988:
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1213:
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were selected by Boeing following a run-off between the three big engine manufacturers. The GEnx uses some technology from the
2007:
1510:
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up to 58.1:1. It has a 10 stage high-pressure compressor and is quieter, helped by larger, more efficient fan blades.
1912:
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The engine market for the 787 is estimated at US$ 40 billion over the next 25 years. A first is the elimination of
2017:
1521:
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1433:
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To reduce maintenance cost and increase engine life, spools with lower parts count are achieved by using
302:, caused by ice formed on fan blades and ingested: the blades moved forward slightly and rubbed on the
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276:
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By fall 2019, General
Electric was offering the GEnx-2B, developed for the 747-8, for the revised
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variant based on the 767-400ER, but needed enough volume to cover the new product certification.
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stage 6 and 7 low-pressure turbine blades. Fuel efficiency is improved by 15% compared to the
330:
1970:
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387:, shrouded guide vanes reduce secondary flows and counter-rotating spools for the reaction
165:
146:
8:
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1499:"General Electric's GEnx-1B engine for the Boeing 787 makes first flight on 747 testbed"
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It stays on wing 20% longer, uses 30% fewer parts to lower maintenance costs and has a
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338:
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299:
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370:
215:, fitted with one GEnx engine in the number 2 (inboard left hand side) position.
1133:"Incident: Air Bridge Cargo B748 at Shanghai on Sep 11th 2012, rejected takeoff"
257:
freighter; on July 31, while at an altitude of 41,000 feet (12,497 m) over
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97:
77:
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1604:
266:
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1687:
1232:"FAA orders engine icing fixes for GEnx-powered Boeing 787 Dreamliners"
413:
315:
291:
161:
149:
142:
101:
1822:
377:
303:
270:
196:
1083:"Issues With Newest Engines Provide Early MRO-Proving Opportunities"
1659:
1564:
380:
reduces NOx gases with required pressure loss and backflow margin.
231:
55:
985:"FAA Orders 'Urgent' 787 Repair After Engine Fails at 20,000 Feet"
1962:
725:
388:
1108:"NTSB issues urgent recommendations for GEnx-1B and -2B engines"
141:("General Electric Next-generation") is an advanced dual rotor,
739:
1157:"GE identifies installation issue in GEnx, orders inspections"
395:
258:
1344:
Continuous Lower Energy, Emissions and Noise (CLEEN) Program
1454:"Type certificate data sheet number E00078NE, Revision: 14"
1269:"Airbus and Boeing are head-to-head in the widebody sector"
347:
355:
307:
1012:"The Innovative 787 Carries Boeing, And Aviation, Ahead"
35:
1037:
General
Electric Performs First Run of New GEnx Engine
374:
273:
valve doors to eject them before they enter the core.
1358:"Designing High-Tech Engines For Easier Maintenance"
1251:"FAA Orders Urgent Fixes For Boeing 787 Dreamliners"
892:
1287:"GE wraps up GE9X trials as 777X flight tests near"
1185:"Icing Hazards Surface on Boeing's Newest 747 Jet"
298:787 had an inflight shutdown after flying through
234:surpassed one million flight hours in early 2017.
1242:
1999:
1334:
1057:"GE In Talks With Airbus Over Potential A350neo"
1248:
1211:
1176:
1311:
1102:
1100:
1098:
1080:
1076:
1074:
1072:
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230:Introduced in late 2011 on a 747-8 freighter,
1537:
1182:
334:Fan blades and outlet guide vanes of GEnx-2B
1297:
1214:"GE-powered JAL 787 has in-flight shutdown"
1095:
1067:
306:seal in the casing. In March 2016, the US
1544:
1530:
1054:
1029:
1511:"GE plans mid-July nod for GEnx siblings"
318:, 681 selected the GEnx (53.3%), 420 the
642:
337:
329:
275:
175:
1448:
1446:
314:In early 2018, of 1,277 orders for the
2000:
225:
1525:
1305:"The GEnx Commercial Aircraft Engine"
1459:. FAA. June 20, 2016. Archived from
1443:
1377:
1363:Aviation Week & Space Technology
1417:"GENX high bypass turbofan engines"
1390:. EASA. 17 May 2018. Archived from
1319:"GENX high bypass turbofan engines"
13:
1249:Patterson, Thom (April 23, 2016).
1183:Pasztor, Andy (October 16, 2013).
14:
2029:
2013:General Electric aircraft engines
1482:
638:
1552:GE Aircraft Engines/GE Aviation/
1337:"TAPS II Combustor Final Report"
1212:Stephen Trimble (9 March 2014).
1009:
895:
616:299.8 kN (67,400 lbf)
613:260.2 kN (58,500 lbf)
602:345.2 kN (77,600 lbf)
599:306.0 kN (68,800 lbf)
589:357.6 kN (80,400 lbf)
572:349.2 kN (78,500 lbf)
562:341.2 kN (76,700 lbf)
559:305.2 kN (68,600 lbf)
535:321.6 kN (72,300 lbf)
532:295.8 kN (66,500 lbf)
522:308.7 kN (69,400 lbf)
511:298.0 kN (67,000 lbf)
508:273.6 kN (61,500 lbf)
498:271.3 kN (61,000 lbf)
488:255.3 kN (57,400 lbf)
485:250.4 kN (56,300 lbf)
34:
1426:
1409:
1350:
1328:
1279:
1261:
1224:
1205:
1081:Sean Broderick (Aug 31, 2017).
863:12,397 lb (5,623 kg)
402:
1434:"GEnx General Characteristics"
1335:General Electric (June 2013).
1149:
1125:
1003:
977:
860:13,552 lb (6,147 kg)
827:2,297 lb (1,042 kg)
753:66,500 lbf (296 kN)
290:In March 2014, a GEnx-powered
171:
1:
1989:Joint development aeroengines
1385:"Type certificate data sheet"
970:
824:2,658 lb (1,206 kg)
821:2,624 lb (1,190 kg)
818:2,559 lb (1,161 kg)
750:76,100 lbf (339 kN)
747:74,100 lbf (330 kN)
744:69,800 lbf (310 kN)
346:The GEnx is derived from the
280:Front view of a GEnx-1B on a
184:As of 2016, the GEnx and the
43:General Electric GEnx at the
2008:High-bypass turbofan engines
1110:. 2019-12-27. Archived from
838:169.7 in (431 cm)
707:104.7 in (266 cm)
647:Rear view of a GEnx-1B on a
391:reduce load on guide vanes.
362:reaches up to 9.0:1 and the
7:
1422:. GE Aviation. 11 Jan 2017.
1055:Guy Norris (Nov 15, 2019).
888:
835:184.7 in (469 cm)
704:111.1 in (282 cm)
419:
10:
2034:
991:. Bloomberg. 22 April 2016
244:On September 11, 2012, an
18:
1985:
1961:
1911:
1821:
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1563:
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729:
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654:, showing noise-reducing
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534:
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507:
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325:
164:. The GEnx succeeded the
42:
33:
28:
965:List of aircraft engines
180:GEnx on 747-8I prototype
19:Not to be confused with
1236:Aviation Safety Network
373:architecture. The Lean
2018:2000s turbofan engines
953:Rolls-Royce Trent 7000
943:Rolls-Royce Trent 1000
933:Engine Alliance GP7000
658:
364:overall pressure ratio
343:
335:
320:Rolls-Royce Trent 1000
287:
202:More Electric Aircraft
186:Rolls-Royce Trent 1000
181:
168:in GE's product line.
126:CFM International LEAP
1088:Aviation Week Network
948:Rolls-Royce Trent XWB
938:Rolls-Royce Trent 900
921:General Electric GE9X
916:General Electric GE90
646:
341:
333:
279:
179:
139:General Electric GEnx
130:General Electric GE9X
114:General Electric GE90
21:General Electric GE9X
1515:Flight International
1503:Flight International
1466:on November 15, 2016
1397:on 28 September 2018
1042:Flight International
852:LP 2,835, HP 11,377
815:Takeoff air per sec.
425:GEnx-1B/2B variants
147:high-bypass turbofan
1275:. February 6, 2018.
1190:Wall Street Journal
1114:on 27 December 2019
910:Related development
849:LP 2,560, HP 11,377
663:
433:EASA certification
426:
342:Detail of GEnx core
226:Operational history
16:Turbofan jet engine
1913:Aeroderivative gas
927:Comparable engines
661:
659:
424:
352:titanium aluminide
344:
336:
288:
182:
93:Major applications
1995:
1994:
886:
885:
798:Top-of-climb OPR
720:1 Fan 3 LP 10 HP
636:
635:
152:in production by
135:
134:
2025:
1557:aircraft engines
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1491:Official website
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1045:. 21 March 2006.
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832:Flange to flange
717:1 Fan 4 LP 10 HP
664:
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632:24 January 2014
624:21 October 2011
554:GEnx-1B74/75/P2
547:GEnx-1B70/75/P2
540:GEnx-1B70/72/P2
439:Take-off rating
427:
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300:icing conditions
282:Vietnam Airlines
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1915:turbine engines
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1517:. 16 June 2010.
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1505:. 23 Feb 2007.
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1483:External links
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1324:. GE Aviation.
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1307:. GE Aviation.
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1293:. 18 Nov 2019.
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1238:. 2016-04-23.
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1010:Paur, Jason.
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959:Related lists
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869:Thrust/weight
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594:GEnx-1B75/P2
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584:GEnx-1B78/P2
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567:GEnx-1B76/P2
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527:GEnx-1B70/P2
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516:GEnx-1B67/P2
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493:GEnx-1B58/P2
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480:GEnx-1B54/P2
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471:24 June 2013
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1554:GE Aerospace
1514:
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1468:. Retrieved
1461:the original
1428:
1411:
1399:. Retrieved
1392:the original
1379:
1367:. Retrieved
1361:
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1291:FlightGlobal
1290:
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1273:FlightGlobal
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1218:FlightGlobal
1217:
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1195:. Retrieved
1193:. p. B3
1188:
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1166:. Retrieved
1162:FlightGlobal
1160:
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1140:. Retrieved
1137:avherald.com
1136:
1127:
1116:. Retrieved
1112:the original
1086:
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1019:. Retrieved
1015:
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993:. Retrieved
988:
979:
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957:
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909:
908:
760:Bypass ratio
701:Fan Diameter
629:GEnx-2B67/P
519:17 May 2018
459:3 July 2012
430:Designation
409:Boeing 747-8
403:Applications
393:
382:
368:
360:bypass ratio
345:
313:
289:
267:ice crystals
251:
243:
239:
236:
229:
217:
210:
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201:
194:
183:
158:Boeing 747-8
154:GE Aerospace
138:
136:
98:Boeing 747-8
78:GE Aerospace
1828:turboshafts
1470:November 2,
684:Application
662:Data sheet
621:GEnx-2B67B
468:GEnx-1B/P2
456:GEnx-1B/P1
436:Continuous
172:Development
2002:Categories
1823:Turboprops
1369:18 October
1142:2022-01-25
1118:2022-01-25
1021:18 October
995:18 October
971:References
857:Dry weight
733:2 HP 6 LP
713:Compressor
607:GEnx-2B67
414:Boeing 787
316:Boeing 787
292:Boeing 787
150:jet engine
143:axial flow
102:Boeing 787
84:First run
1777:F404/F412
1660:Turbofans
1565:Turbojets
1168:6 October
730:2 HP 7 LP
378:combustor
304:abradable
271:bleed air
269:and open
197:bleed air
1963:Propfans
1866:H-Series
1836:Catalyst
1738:Passport
1700:CJ805-23
1668:Affinity
1197:June 10,
889:See also
843:Nominal
778:Takeoff
758:Takeoff
738:Takeoff
676:-1B76/78
673:-1B74/75
656:chevrons
444:GEnx-1B
420:Variants
389:turbines
385:GE90-94B
232:Cargolux
156:for the
56:Turbofan
1401:17 June
726:Turbine
679:-2B67B
667:Variant
649:Jetstar
1953:LMS100
1948:LM9000
1943:LM6000
1938:LM2500
1933:LM1600
1928:LM1500
1720:GP7000
1688:CFE738
1588:GE4/J5
1346:. FAA.
740:thrust
696:747-8
693:787-10
396:blisks
358:, the
326:Design
285:787-10
220:767-XF
1923:LM500
1813:XA102
1808:XA100
1766:YF120
1726:HF120
1694:CFM56
1683:CF700
1650:YJ101
1578:CJ805
1573:CJ610
1464:(PDF)
1457:(PDF)
1437:(PDF)
1420:(PDF)
1395:(PDF)
1388:(PDF)
1340:(PDF)
1322:(PDF)
1016:Wired
882:5.36
810:52.4
793:44.7
690:787-9
687:787-8
670:-1B70
652:787-8
259:China
87:2006
52:Type
47:2009
29:GEnx
1976:RISE
1971:GE36
1903:T901
1898:T700
1893:T408
1888:T407
1861:GE38
1856:GE27
1851:CT64
1846:CT58
1826:and
1803:TF39
1798:TF34
1793:RM16
1787:RM12
1782:F414
1771:F136
1761:F118
1756:F110
1750:F108
1745:F101
1732:LEAP
1715:GEnx
1710:GE9X
1705:GE90
1678:CF34
1640:YJ93
1472:2017
1403:2019
1371:2018
1199:2014
1170:2012
1023:2018
997:2018
879:5.62
876:5.47
873:5.15
807:58.1
804:55.4
801:53.3
790:47.4
787:46.3
784:43.8
773:8.0
375:TAPS
348:GE90
190:GE90
160:and
137:The
1883:T64
1878:T58
1873:T31
1841:CT7
1673:CF6
1645:J97
1635:J87
1630:J85
1625:J79
1620:J73
1615:J47
1610:J35
1605:J33
1600:J31
1593:I-A
1583:GE1
1255:CNN
1039:".
845:RPM
780:OPR
770:9.1
767:9.1
764:9.3
356:CF6
308:FAA
166:CF6
162:787
2004::
1987:†
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1445:^
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1234:.
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1187:.
1159:.
1135:.
1097:^
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1069:^
1059:.
1014:.
987:.
145:,
1978:†
1789:†
1773:†
1752:†
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1728:†
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1696:†
1690:†
1545:e
1538:t
1531:v
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999:.
23:.
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