Summary
The Boeing Yellowstone Project was a Boeing Commercial Airplanes project to replace its entire civil aircraft portfolio with advanced technology aircraft. New technologies to be introduced include composite aerostructures, more electrical systems (instead of hydraulic systems), and more fuel-efficient turbofan engines (such as the Pratt & Whitney PW1000G, General Electric GEnx, the CFM International CFM56, and the Rolls-Royce Trent 1000). The term "Yellowstone" refers to the technologies, while "Y1" through "Y3" refer to the actual aircraft.[1]
The first of these projects, Y2, entered service as the Boeing 787. The second project, Y3, is expected to enter service as the Boeing 777X. The Y1 project was cancelled in favor of the re-engined Boeing 737 MAX.
Yellowstone projects edit
Yellowstone is divided into three projects:
- Boeing Y1, to replace the 737 and 757 product lines.[2] The Y1 covers the 100- to 250-passenger market, and is expected to be the second Yellowstone Project aircraft to be developed. Boeing submitted a patent application in November 2009, that was released to the public in August 2010, that envisions an elliptical composite fuselage, and likely signals the company's planning for the 737 successor.[3][4] In early 2011, Boeing outlined plans for a 737 replacement that would arrive in 2020.[5][6] In August 2011, Boeing announced the 737 MAX, an updated and re-engined version of the 737, rather than progress with Y1 concepts.[7]
- Boeing Y2, to replace the 767 product line.[8] It covers the 250- to 350-passenger market, and was the first completed Yellowstone project, coming to fruition as the Boeing 787 Dreamliner. Y2 initially referred to the highly efficient, more conventional, baseline aircraft for the Sonic Cruiser, which was project "Glacier".[9] The Dreamliner competes with the Airbus A330neo.
- Boeing Y3, to replace the 777 and 747 product lines. Y3 covers the 350–600+ passenger market. The Boeing 777X is largely considered the end result of the Y3 program, which was launched by Boeing on November 16, 2013. The 777X competes with the Airbus A350.
See also edit
References edit
- ^ "Boeing Y-class Yellowstone". GlobalSecurity.org. Retrieved 13 May 2012.
- ^ "Boeing firms up 737 replacement studies by appointing team"". FlightGlobal. March 3, 2006.
- ^ "Weight-Optimizing Internally Pressurized Composite-Body Aircraft Fuselages Having Near-Elliptical Cross Sections". ip.com, August 12, 2010.
- ^ Ostrower, John (September 24, 2010). "Boeing patent may provide glimpse into 737 replacement plan". FlightGlobal. Archived from the original on October 6, 2014.
- ^ Sanders, Peter; Cameron, Doug (January 26, 2011). "Boeing Says 787 Still Profitable, Eyes 737 Revamp". The Wall Street Journal.
- ^ Ostrower, Jon (February 10, 2011). "Boeing boss green-lights all-new next generation narrowbody". FlightGlobal.
- ^ "Boeing Launches 737 New Engine Family with Commitments for 496 Airplanes from Five Airlines" (Press release). Boeing. August 30, 2011.
- ^ Norris, Guy (February 7, 2006). "THE 737 STORY: Smoke and mirrors obscure 737 and Airbus A320 replacement studies". FlightGlobal.
- ^ Norris, Guy (January 7, 2003). "Sonic Cruiser is dead - long live Super Efficient?". FlightGlobal.
External links edit
- March 2001 Newsletter, Richard Aboulafia, March, 2001.
- "Future Airliners", Aerospaceweb.org, January 5, 2003. (refers to Yellowstone as the project name for the future Boeing 787)
- "Not if... but when", Flight International, July 6, 2005.
- "Boeing's answer to the "superjumbo" takes off". The Independent. February 9, 2010.