AEROSPACE PROPULSION A THIRD GENERATION BY-PASS ENGINE AEROSPACE 410 (10/7/2002) AIR BREATHING ENGINE TURBO-FAN ENGINES GE 90 A THIRD GENERATION BY-PASS ENGINE Dr. Cengiz Camci

GE 90 introduced in 1995 current thrust level is 115,000 lbs GE 90 115B the engine sustained 122,965 lbs ground tests Peebles OHIO expected in service in 2003 Boeing 777 ER

Composite fan blades Swept fan blades High efficiency core compressor

6 years 2.3 million engine flight hours 30 reported bird ingestion events (including a bird more than 3 lbs) All fan blades remained fully servicable

Swept fan blades add More than 2000 lbs (8.9 k N) Additional thrust SWEPT FAN BLADES also provide better fuel burn

Tests by Lucas Aerospace Ex Pan Am 747-100 Tests by Lucas Aerospace Wings needed re-strengthening

ETOPS EXTENDED TWIN OPERATIONS OVER WATER

FAA Type Design approval confirms that the engine/aircraft combination has the reliability to conduct ETOPS operations up to 180 minutes flying time from a primary or alternate airport. ETOPS approval provides airlines much greater route-scheduling flexibility as it allows twin-engine aircraft to service routes traditionally reserved for three- and four-engine aircraft.

MOST IN FLIGHT SHUT-DOWNS ARE CAUSED BY PUMPS, TUBES AND SIMILAR EXTERNAL COMPONENTS

GE 90 115B the engine sustained 122,965 lbs ground tests Peebles OHIO