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General Electric GEnx

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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.
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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
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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
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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
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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.
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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.
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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
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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
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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.
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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
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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
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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
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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
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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.
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ultrasonic scans for midshaft fractures before use of GEnx engines and require repetitive on-wing inspections of the engine to detect cracks.
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that the fan midshafts on the GEnx engines fractured or cracked at the forward end of the shaft where the retaining nut is installed.
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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
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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.
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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
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To reduce maintenance cost and increase engine life, spools with lower parts count are achieved by using
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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
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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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freighter; on July 31, while at an altitude of 41,000 feet (12,497 m) over
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reduces NOx gases with required pressure loss and backflow margin.
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Continuous Lower Energy, Emissions and Noise (CLEEN) Program
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General Electric Performs First Run of New GEnx Engine
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valve doors to eject them before they enter the core.
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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: 1658: 1563: 859: 848: 834: 729: 716: 703: 654:, showing noise-reducing 615: 612: 571: 558: 534: 531: 507: 484: 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 1546: 1539: 1532: 1523: 1522: 1518: 1506: 1494: 1493: 1491:Official website 1476: 1475: 1473: 1471: 1465: 1458: 1450: 1441: 1440: 1438: 1430: 1424: 1423: 1421: 1413: 1407: 1406: 1404: 1402: 1396: 1389: 1381: 1375: 1374: 1372: 1370: 1354: 1348: 1347: 1341: 1332: 1326: 1325: 1323: 1315: 1309: 1308: 1301: 1295: 1294: 1283: 1277: 1276: 1265: 1259: 1258: 1246: 1240: 1239: 1228: 1222: 1221: 1209: 1203: 1202: 1200: 1198: 1180: 1174: 1173: 1171: 1169: 1153: 1147: 1146: 1144: 1143: 1129: 1123: 1122: 1120: 1119: 1104: 1093: 1092: 1078: 1065: 1064: 1052: 1046: 1045:. 21 March 2006. 1033: 1027: 1026: 1024: 1022: 1007: 1001: 1000: 998: 996: 981: 905: 900: 899: 898: 832:Flange to flange 717:1 Fan 4 LP 10 HP 664: 660: 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: 423: 376: 300:icing conditions 282:Vietnam Airlines 122: 110: 94: 64: 38: 26: 25: 2033: 2032: 2028: 2027: 2026: 2024: 2023: 2022: 1998: 1997: 1996: 1991: 1981: 1957: 1915:turbine engines 1914: 1907: 1825: 1817: 1654: 1559: 1550: 1517:. 16 June 2010. 1509: 1497: 1489: 1488: 1485: 1480: 1479: 1469: 1467: 1463: 1456: 1452: 1451: 1444: 1436: 1432: 1431: 1427: 1419: 1415: 1414: 1410: 1400: 1398: 1394: 1387: 1383: 1382: 1378: 1368: 1366: 1356: 1355: 1351: 1339: 1333: 1329: 1321: 1317: 1316: 1312: 1303: 1302: 1298: 1285: 1284: 1280: 1267: 1266: 1262: 1247: 1243: 1230: 1229: 1225: 1210: 1206: 1196: 1194: 1181: 1177: 1167: 1165: 1155: 1154: 1150: 1141: 1139: 1131: 1130: 1126: 1117: 1115: 1106: 1105: 1096: 1079: 1068: 1053: 1049: 1034: 1030: 1020: 1018: 1008: 1004: 994: 992: 983: 982: 978: 973: 903:Aviation portal 901: 896: 894: 891: 641: 422: 405: 371:contra-rotating 328: 228: 174: 128: 120: 108: 100: 92: 63:National origin 62: 24: 17: 12: 11: 5: 2031: 2021: 2020: 2015: 2010: 1993: 1992: 1986: 1983: 1982: 1980: 1979: 1973: 1967: 1965: 1959: 1958: 1956: 1955: 1950: 1945: 1940: 1935: 1930: 1925: 1919: 1917: 1909: 1908: 1906: 1905: 1900: 1895: 1890: 1885: 1880: 1875: 1869: 1868: 1863: 1858: 1853: 1848: 1843: 1838: 1832: 1830: 1819: 1818: 1816: 1815: 1810: 1805: 1800: 1795: 1790: 1784: 1779: 1774: 1768: 1763: 1758: 1753: 1747: 1741: 1740: 1735: 1729: 1723: 1717: 1712: 1707: 1702: 1697: 1691: 1685: 1680: 1675: 1670: 1664: 1662: 1656: 1655: 1653: 1652: 1647: 1642: 1637: 1632: 1627: 1622: 1617: 1612: 1607: 1602: 1596: 1595: 1590: 1585: 1580: 1575: 1569: 1567: 1561: 1560: 1549: 1548: 1541: 1534: 1526: 1520: 1519: 1507: 1505:. 23 Feb 2007. 1495: 1484: 1483:External links 1481: 1478: 1477: 1442: 1425: 1408: 1376: 1349: 1327: 1324:. GE Aviation. 1310: 1307:. GE Aviation. 1296: 1293:. 18 Nov 2019. 1278: 1260: 1241: 1223: 1204: 1175: 1148: 1124: 1094: 1066: 1047: 1028: 1002: 975: 974: 972: 969: 968: 967: 956: 955: 950: 945: 940: 935: 924: 923: 918: 907: 906: 890: 887: 884: 883: 880: 877: 874: 871: 865: 864: 861: 858: 854: 853: 850: 847: 840: 839: 836: 833: 829: 828: 825: 822: 819: 816: 812: 811: 808: 805: 802: 799: 795: 794: 791: 788: 785: 782: 775: 774: 771: 768: 765: 762: 755: 754: 751: 748: 745: 742: 735: 734: 731: 728: 722: 721: 718: 715: 709: 708: 705: 702: 698: 697: 694: 691: 688: 685: 681: 680: 677: 674: 671: 668: 640: 639:Specifications 637: 634: 633: 630: 626: 625: 622: 618: 617: 614: 611: 610:29 March 2011 608: 604: 603: 600: 597: 595: 591: 590: 587: 585: 581: 580: 578: 577:GEnx-1B76A/P2 574: 573: 570: 568: 564: 563: 560: 557: 555: 551: 550: 548: 544: 543: 541: 537: 536: 533: 530: 528: 524: 523: 520: 517: 513: 512: 509: 506: 504: 500: 499: 496: 494: 490: 489: 486: 483: 481: 477: 476: 474: 472: 469: 465: 464: 462: 460: 457: 453: 452: 450: 448: 447:29 March 2011 445: 441: 440: 437: 434: 431: 421: 418: 417: 416: 411: 404: 401: 327: 324: 296:Japan Airlines 255:AirBridgeCargo 246:AirBridgeCargo 227: 224: 213:Boeing 747-100 173: 170: 133: 132: 123: 121:Developed into 117: 116: 111: 109:Developed from 105: 104: 95: 89: 88: 85: 81: 80: 75: 71: 70: 65: 59: 58: 53: 49: 48: 45:Paris Air Show 40: 39: 31: 30: 15: 9: 6: 4: 3: 2: 2030: 2019: 2016: 2014: 2011: 2009: 2006: 2005: 2003: 1990: 1984: 1977: 1974: 1972: 1969: 1968: 1966: 1964: 1960: 1954: 1951: 1949: 1946: 1944: 1941: 1939: 1936: 1934: 1931: 1929: 1926: 1924: 1921: 1920: 1918: 1916: 1910: 1904: 1901: 1899: 1896: 1894: 1891: 1889: 1886: 1884: 1881: 1879: 1876: 1874: 1871: 1870: 1867: 1864: 1862: 1859: 1857: 1854: 1852: 1849: 1847: 1844: 1842: 1839: 1837: 1834: 1833: 1831: 1829: 1824: 1820: 1814: 1811: 1809: 1806: 1804: 1801: 1799: 1796: 1794: 1791: 1788: 1785: 1783: 1780: 1778: 1775: 1772: 1769: 1767: 1764: 1762: 1759: 1757: 1754: 1751: 1748: 1746: 1743: 1742: 1739: 1736: 1733: 1730: 1727: 1724: 1721: 1718: 1716: 1713: 1711: 1708: 1706: 1703: 1701: 1698: 1695: 1692: 1689: 1686: 1684: 1681: 1679: 1676: 1674: 1671: 1669: 1666: 1665: 1663: 1661: 1657: 1651: 1648: 1646: 1643: 1641: 1638: 1636: 1633: 1631: 1628: 1626: 1623: 1621: 1618: 1616: 1613: 1611: 1608: 1606: 1603: 1601: 1598: 1597: 1594: 1591: 1589: 1586: 1584: 1581: 1579: 1576: 1574: 1571: 1570: 1568: 1566: 1562: 1558: 1555: 1547: 1542: 1540: 1535: 1533: 1528: 1527: 1524: 1516: 1512: 1508: 1504: 1500: 1496: 1492: 1487: 1486: 1462: 1455: 1449: 1447: 1435: 1429: 1418: 1412: 1393: 1386: 1380: 1365: 1364: 1359: 1353: 1345: 1338: 1331: 1320: 1314: 1306: 1300: 1292: 1288: 1282: 1274: 1270: 1264: 1256: 1252: 1245: 1238:. 2016-04-23. 1237: 1233: 1227: 1219: 1215: 1208: 1192: 1191: 1186: 1179: 1164: 1163: 1158: 1152: 1138: 1134: 1128: 1113: 1109: 1103: 1101: 1099: 1090: 1089: 1084: 1077: 1075: 1073: 1071: 1062: 1061:Aviation Week 1058: 1051: 1044: 1043: 1038: 1032: 1017: 1013: 1010:Paur, Jason. 1006: 990: 989:Bloomberg.com 986: 980: 976: 966: 963: 962: 961: 960: 959:Related lists 954: 951: 949: 946: 944: 941: 939: 936: 934: 931: 930: 929: 928: 922: 919: 917: 914: 913: 912: 911: 904: 893: 881: 878: 875: 872: 870: 869:Thrust/weight 867: 866: 862: 856: 855: 851: 846: 842: 841: 837: 831: 830: 826: 823: 820: 817: 814: 813: 809: 806: 803: 800: 797: 796: 792: 789: 786: 783: 781: 777: 776: 772: 769: 766: 763: 761: 757: 756: 752: 749: 746: 743: 741: 737: 736: 732: 727: 724: 723: 719: 714: 711: 710: 706: 700: 699: 695: 692: 689: 686: 683: 682: 678: 675: 672: 669: 666: 665: 657: 653: 650: 645: 631: 628: 627: 623: 620: 619: 609: 606: 605: 601: 598: 596: 594:GEnx-1B75/P2 593: 592: 588: 586: 584:GEnx-1B78/P2 583: 582: 579: 576: 575: 569: 567:GEnx-1B76/P2 566: 565: 561: 556: 553: 552: 549: 546: 545: 542: 539: 538: 529: 527:GEnx-1B70/P2 526: 525: 521: 518: 516:GEnx-1B67/P2 515: 514: 510: 505: 503:GEnx-1B64/P2 502: 501: 497: 495: 493:GEnx-1B58/P2 492: 491: 487: 482: 480:GEnx-1B54/P2 479: 478: 475: 473: 471:24 June 2013 470: 467: 466: 463: 461: 458: 455: 454: 451: 449: 446: 443: 442: 438: 435: 432: 429: 428: 415: 412: 410: 407: 406: 400: 397: 392: 390: 386: 381: 379: 372: 367: 365: 361: 357: 353: 349: 340: 332: 323: 321: 317: 312: 309: 305: 301: 297: 293: 286: 283: 278: 274: 272: 268: 264: 263:thunderstorms 260: 256: 250: 247: 242: 238: 235: 233: 223: 221: 216: 214: 209: 205: 203: 198: 193: 191: 187: 178: 169: 167: 163: 159: 155: 151: 148: 144: 140: 131: 127: 124: 119: 118: 115: 112: 107: 106: 103: 99: 96: 91: 90: 86: 83: 82: 79: 76: 74:Manufacturer 73: 72: 69: 68:United States 66: 61: 60: 57: 54: 51: 50: 46: 41: 37: 32: 27: 22: 1714: 1554:GE Aerospace 1514: 1502: 1468:. 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Index

General Electric GE9X

Paris Air Show
Turbofan
United States
GE Aerospace
Boeing 747-8
Boeing 787
General Electric GE90
CFM International LEAP
General Electric GE9X
axial flow
high-bypass turbofan
jet engine
GE Aerospace
Boeing 747-8
787
CF6

Rolls-Royce Trent 1000
GE90
bleed air
Boeing 747-100
767-XF
Cargolux
AirBridgeCargo
AirBridgeCargo
China
thunderstorms
ice crystals

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