Boeing Commercial Airplanes
777X Tripple Seven
Produced 2017–present
Number built 4

The Boeing 777X is the latest series of the long-range, wide-body, twin-engine jetliners in the Boeing 777 family from Boeing Commercial Airplanes. The 777X features new GE9X engines, new composite wings with folding wingtips, greater cabin width and seating capacity, and technologies from the Boeing 787. The 777X was launched in November 2013 with two variants: the 777-8 and the 777-9. The 777-8 provides seating for 384 passengers and has a range of 8,745 nautical miles [nmi] (16,196 km; 10,064 mi) while the 777-9 has seating for 426 passengers and a range of over 7,285 nmi (13,492 km; 8,383 mi).

Design

Wing

The 777X has a new longer composite wing with folding wingtips. Due to this, the 777X is the first aircraft to have 'Wingtip Controls' inside the cockpit. Based on the 787 wing but with less sweep, the new wing has a higher lift-to-drag ratio, aspect ratio increased from 9:1 to 10:1, area increased from 4,702 to 5,562 sq ft (436.8 to 516.7 m²), and usable fuel capacity increased from 320,863 to 350,410 lb (145,541 to 158,943 kg).

To stay within the size category of the current 777 with a less than 213 ft (65 m) wingspan, it features 11 feet (3.5 m) folding wingtips with the folding wingtip actuation system made by Liebherr Aerospace. The mechanism was demonstrated for Aviation Week at the Boeing Everett Factory in October 2016; the folding movement should be complete in 20 seconds and be locked in place at the end. Specific alerts and procedures are needed to handle a malfunction.