Okees From Canada, joined Sep 2005, 424 posts, RR: 5 Posted (10 years 3 weeks 4 days 15 hours ago) and read 9363 times:
Was reading about the yellowstone project, which seems to be a project that will replace all current boeing aircraft. So far boeing is focusing on Y2.. which introduces the 787.. is there any information regarding Y1 and Y3? Did anyone hear/read about possible 737, 747, and 777 replacements?
Boeing nut From , joined Dec 1969, posts, RR:
Reply 1, posted (10 years 3 weeks 4 days 6 hours ago) and read 9129 times:
From what I remember, Yellowstone was/is a codename for technology that is to be used on future Boeing models, not a term for the models themselves. The term Yellowstone was tossed around a lot during Sonic Cruiser studies and even during early 787 development.
Behind the scenes, however, initial product development work is already being conducted on the 737 successor platform. Believed to be codenamed Yellowstone 1 (Y1), the project forms one of the three Yellowstone new-generation studies emerging from the broad-based "Project 20XX" advanced technologies initiative behind the Sonic Cruiser and subsequently the 787. In this sequence, Y1 is believed to cover the 100-200 passenger range; Y2, which became the 787, covers the 200- to 350-seat range; and Y3 covers the range for what could eventually become a long-term successor to the 777 in the next decade.
A handful of product-development engineers who were working on the Sonic Cruiser and the pre-launch phases of the 7E7/787 up to 2004 are now believed to have been redirected to work on the early stages of the Y1. Sources familiar with the project say the aim is to use as many technologies from the 787 programme as possible, but one adds: "It is not really clear how the technology for the 787 can make its way – dollar-wise – on to a smaller aircraft. It isn't easy, unless you've made it that way from the start. Everybody is jumping on that bandwagon and rolling over to the programme. Whole teams are setting up to carry it to firm configuration, though it is still years away."
Zvezda From Lithuania, joined Aug 2004, 10512 posts, RR: 63
Reply 4, posted (10 years 3 weeks 4 days 5 hours ago) and read 8957 times:
Quoting BoeingBus (Reply 3): Y2, which became the 787, covers the 200- to 350-seat range
What would a 350 seat B787 be? It all depends on seating configuration. Fortunately, we have a good clue: The smallest size (B787-3/8) is implied to be a 200 seat model. That means a 3 class configuration. A B787 with 350 seats in 3 classes would not be a B787-10X, which would seat 307 in a three class configuration with 61" F pitch, 39" C pitch, and 32" Y pitch. The 350 seat B787 mentioned by FI would have to be a 75 meter stretch -- about the same size as the A340-600.
N60659 From United States of America, joined Mar 2005, 654 posts, RR: 23
Reply 6, posted (10 years 3 weeks 4 days 4 hours ago) and read 8761 times:
Quoting Zvezda (Reply 4): The 350 seat B787 mentioned by FI would have to be a 75 meter stretch -- about the same size as the A340-600.
Zvezda, I think your assumption that the Y2 definition up to 350 seats translates to a typical three-class seating arrangement may not necessarily be true. My read on that statement is that the Y2 definition translates to a single class, all-economy "pack it to the rafters" type seating arrangement at the upper end of the spectrum. If that is the case, would the proposed 787-10X study not cover that definition? It is kind of in the same vein as the 773ER has a typical 3-class seating arrangement for 365 passengers, but has the potential to seat up to 550 passengers in a single-class layout. Just a thought.