Boeing Hangs GEnx-2B Engines on the 747-8 Freighter

GEnx-2B engines were hung on the first Boeing 747-8 Freighter in 2009.

Boeing cutaway diagram of the GEnx-2B engine labelling the fan, booster, compressor, combustor and turbines, and marking which parts are common to the 787 and which were resized for the 747-8
Boeing's own cutaway. The marked parts show what the 747-8 shares with the 787's GEnx and what had to be resized for a four-engined aircraft.Boeing

Boeing said today that they have installed the GEnx-2B engines off the 747-8F. This airplanes is moving through it’s assembly and testing activities pretty fast. In fact the GEnx will most likely fly on the 747-8 before it flies on the 787 which is the airplane it was meant for (forget about the engines that are flying on the GE 747 test bed).

EVERETT, Wash., Sept. 2 /PRNewswire-FirstCall/ – Boeing (NYSE: BA) continues to make progress on the assembly of the 747-8 Freighter, as mechanics completed the installation of the new GEnx-2B engines on airplane No. 1 in final assembly at the factory in Everett, Wash.

“We are another step closer to bringing the 747-8 Freighter to market,” said Mo Yahyavi, vice president and general manager of the 747 program. “This production milestone is a reflection of the strong working together relationship among Boeing, GE Aviation, Middle River Aircraft Systems and Spirit AeroSystems.”

The GEnx-2B continues its progress through its engine certification testing. It recently completed the first phase of flight testing on GE’s 747 flying testbed.

“The GEnx-2B engine has performed very well during more than 1,500 hours of ground certification tests and 100 hours of flight testing,” said Tom Brisken, general manager of GE Aviation’s GEnx program. “We look forward to watching the GEnx-powered 747-8 Freighter take its first flight, ushering in a new era of improved aircraft efficiency.”

The GEnx-2B is based on the GEnx-1B engine launched with the 787 Dreamliner. The GEnx-2B engine has been designed for the 747-8 and rated at 66,500 pounds of thrust.

“The 747-8 and the GEnx-2B are a perfect match,” said Keith Leverkuhn, vice president and general manager of Boeing Commercial Airplanes Propulsion Systems. “The combination of these two technologies will provide our customers with improved fuel efficiency and reduced emissions and noise as well as lower cost of ownership.”

With the GEnx-2B engines, the 747-8 Freighter will be 17 percent more fuel efficient than the 747-400 Freighter, resulting in a 17-percent reduction in carbon emissions. It also will have a noise footprint that is 30 percent smaller than its predecessor, making it a QC2-compliant airplane on both departure and arrival.

The 747-8 Freighter is expected to make its first flight in the fourth quarter of this year, with first delivery scheduled for the third quarter of 2010. Boeing has secured 78 orders from leading cargo operators for the new 747-8 Freighter. Cargolux, Nippon Cargo Airlines, AirBridgeCargo Airlines, Atlas Air, Cathay Pacific, Dubai Aerospace Enterprise, Emirates SkyCargo, Guggenheim and Korean Air all have placed firm orders for the airplane.

Update

The GEnx-2B was the only engine ever offered on the 747-8. An exclusivity agreement between GE and Boeing meant no other manufacturer’s engine could be fitted for at least ten years.

That was a significant break with 747 history. Every earlier generation could be bought with engines from more than one maker, and that choice mattered commercially — the 747-200 was the first 747 offered with Pratt & Whitney, General Electric and Rolls-Royce, and it outsold the 747-100 by more than two to one partly because airlines could buy a 747 that matched the engines they already maintained.

In service the GEnx-2B burned about 16 percent less fuel per seat than the engines on the 747-400. Boeing later delivered a Performance Improvement Package that added a further 1.8 percent.

See also engines optimised for the 747-8.