Lire
https://en.wikipedia.org/wiki/Boeing_New_Midsize_Airplane
extrait
In 2015, Boeing determined the market was large enough to launch a new design. In 2017, multiple airlines expressed interest in a composite, seven-abreast twin-aisle with an elliptical cross-section. The new aircraft, likely to be known as the Boeing 797, would be available in two versions: a 225-seater with 5,000 nmi (9,300 km) range and a 275-seater with a range of 4,500 nmi (8,300 km). Third-party forecasts for this market vary from 2,000 to 4,000 aircraft, though Boeing expects the market demand to lie at the upper end of this range. At a projected price of $65–75 million, the NMA should generate 30% more revenue than narrowbodies and have 40% lower trip costs than the widebodies it would replace, but would cost $12–15 billion to develop. It would be powered by a new 50,000 lbf (220 kN) turbofan from GE Aviation/CFM International or Pratt & Whitney, with a bypass ratio of 10:1 or more and an overall pressure ratio exceeding 50:1.
Boeing says it will decide in 2019 whether to offer the airplane to the market and in 2020 make its final decision on whether to launch the new airplane. Development would begin soon thereafter, with entry into service targeted for 2025.
