The GE9XTM engine lifted off on March 13 under wing of GE Aviation’s 747 flying testbed in Victorville, California, for its first flight test.The engine that will power Boeing’s new 777X aircraft flew for more than four hours on its first flight. During the flight, the aircraft and engine completed the entire test card and validated key operational and functional characteristics enabling the test campaign to progress in subsequent flights.
Certification testing of the GE9X engine began in May 2017. Beyond flight testing, the engine recently completed icing tests at GE Aviation’s facility in Winnipeg, Manitoba, Canada, and continues crosswind testing at the Peebles Test Operation in Ohio. Engine certification is expected in 2019.
With almost 700 GE9X engines on order, the GE9X engine will be in the 100,000 pound thrust class and will have the largest front fan at 134 inches in diameter with a composite fan case and 16 fourth generation carbon fiber composite fan blades. Other key features include: a next-generation 27:1 pressure-ratio 11-stage high-pressure compressor; a third-generation TAPS III combustor for high efficiency and low emissions; and CMC material in the combustor and turbine. Ultra heat-resistant materials known as ceramic matrix composites (CMC) in the combustor and turbine can operate at temperatures up to 1,300°C (2,400°F). The GE9X will be the most fuel-efficient engine GE has ever produced on a per-pounds-of-thrust basis.
What is the Boeing 777X?
It is set to be the biggest passenger plane ever seen with a wingspan so big the tips have to be folded up so it can fit into airports.The 777X series was launched in November 2013 with two variants, the 777-8X and the larger 777-9X.
The Boeing 777-9X will be the largest and most efficient twin-engine jet in the world, the aerospace giant claims. Around 320 have already been ordered, the firm says, and will feature a wider cabin and bigger windows than even the firm’s 787 Dreamliner.
The plane will have the widest wingspan of any aircraft: 235 feet, five inches (71.8 metres), making it wider than four 53-foot (16-metre) semi-truck trailers parked end to end. The hinged wingtips will measure 12 feet, and locking pins will prevent them from folding during flight, Boeing told.Inside, the 777-9X will seat at least 400 passengers, 34 more than the 777-9X’s competitor – the Airbus A350-1000.
The 777-9X cabin will be 16 inches (40 centimeters) wider than the A350-1000, Boeing says, allowing economy-class seat widths up to 18 inches (46 centimeters). Typical airline seat widths range from 17 to 18.5 inches (43 to 47 centimeters). The 777-9X’s windows will also be 15% larger than competing airliners, Boeing says, and placed at a height that will be eye level for most passengers.