The Boeing 777X (variant 777-9) has the highest capacity of any twin-engine aircraft, with a typical two-class seating capacity of 426 passengers.
Thanks to many improvements, the 777X is significantly more efficient than its predecessor (B777-300ER). New wings contribute significantly to aerodynamic efficiency. The 777X has raked wingtips instead of conventional winglets. The wings are also mainly made of carbon fibre and other composite materials, which provide higher strength and enable significant weight savings.
The most unique feature of the 777X is the folding wingtips. Increase of the wingspan reduces aerodynamic drag, and the folding wingtips allow to reduce the wingspan on the ground to fit into Airport E Category (reduction of the wingspan from 71.8 metres to 64.8 metres).
The 777X is powered by General Electric's GE9X engines, currently the largest jet engines ever built. Each engine generates 467 kN of thrust.
The 777X improves passenger comfort by using a modified version of the 787's pressurisation system, which lowers the cabin altitude to 6,000 feet (1,830 m) and significantly improves humidity. The interior of the 777X is more spacious and quieter than its predecessors and has significantly larger windows than its competitor.
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Негізгі бет Ғылым және технология Extreme Maneuvering of the Boeing 777X | Paris Air Show 2023
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