The Boeing Yellowstone Project was a

Boeing Commercial Airplanes Boeing Commercial Airplanes (BCA) is a division of the Boeing Company. It designs, assembles, markets, and sells commercial aircraft, including the 737, 767, 777, and 787, along with freighter and business jet variants of most. The divis ...

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 A turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a combination of references to the preceding generation engine technology of the turbojet and the add ...

engines (such as the

Pratt & Whitney PW1000G The Pratt & Whitney PW1000G family, also marketed as the Pratt & Whitney GTF (geared turbofan), is a family of high-bypass geared turbofan engines produced by Pratt & Whitney. The various models can generate 15,000 to 33,000 Pound (force), pounds ...

General Electric GEnx The General Electric GEnx ("General Electric Next-generation") is an advanced dual rotor, axial flow, high-bypass turbofan jet engine in production by GE Aerospace for the Boeing 747-8 and Boeing 787, 787. The GEnx succeeded the General Electri ...

, the

CFM International CFM56 The CFM International CFM56 (U.S. military designation F108) series is a Franco-American family of high-bypass turbofan aircraft engines made by CFM International (CFMI), with a thrust range of . CFMI is a 50–50 joint-owned company of Safran ...

, and the Rolls-Royce Trent 1000). The term "Yellowstone" refers to the technologies, while "Y1" through "Y3" refer to the actual aircraft. The first of these projects, Y2, entered service as the

Boeing 787 The Boeing 787 Dreamliner is an American wide-body airliner developed and manufactured by Boeing Commercial Airplanes. After dropping its unconventional Sonic Cruiser project, Boeing announced the conventional 7E7 on January 29, 2003, wh ...

. The second project, Y3, is expected to enter service as the

Boeing 777X The Boeing 777X is the latest series of the Long-haul, long-range, Wide-body aircraft, wide-body, Twinjet, twin-engine jetliners in the Boeing 777 family from Boeing Commercial Airplanes. The changes for 777X include General Electric GE9X engi ...

. The Y1 project was cancelled in favor of the re-engined

Boeing 737 MAX The Boeing 737 MAX is a series of narrow-body aircraft developed by Boeing Commercial Airplanes as the fourth generation of the Boeing 737. It succeeds the Boeing 737 Next Generation and incorporates more efficient CFM International LEAP engin ...

Yellowstone projects

Yellowstone is divided into three projects: * Boeing Y1, to replace the 737 and 757 product lines. 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. In early 2011, Boeing outlined plans for a 737 replacement that would arrive in 2020. In August 2011, Boeing announced the 737 MAX, an updated and re-engined version of the 737, rather than progress with Y1 concepts. * Boeing Y2, to replace the 767 product line. It covers the 250- to 350-passenger market, and was the first completed Yellowstone project, coming to fruition as the ''

Boeing 787 Dreamliner The Boeing 787 Dreamliner is an American wide-body airliner developed and manufactured by Boeing Commercial Airplanes. After dropping its unconventional Sonic Cruiser project, Boeing announced the conventional 7E7 on January 29, 2003, wh ...

''. Y2 initially referred to the highly efficient, more conventional, baseline aircraft for the Sonic Cruiser, which was project "Glacier". The Dreamliner competes with the

Airbus A330neo The Airbus A330neo ("neo" for " New Engine Option") is a wide-body airliner developed by Airbus from the original Airbus A330 (now A330''ceo'' – "Current Engine Option"). A new version with modern engines comparable with those developed fo ...

. * Boeing Y3, to replace the 777 and 747 product lines. Y3 covers the 350–600+ passenger market. The

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 The Airbus A350 is a flight length, long-range, wide-body twin-engine airliner developed and produced by Airbus. The initial A350 design proposed in 2004, in response to the Boeing 787 Dreamliner, would have been a development of the Airbu ...

References

External links

March 2001 Newsletter
Richard Aboulafia, March, 2001.
"Future Airliners"
Aerospaceweb.org, January 5, 2003. (refers to Yellowstone as the project name for the future

)
"Not if... but when"
''

Flight International ''Flight International'', formerly ''Flight'', is a monthly magazine focused on aerospace. Published in the United Kingdom and founded in 1909 as "A Journal devoted to the Interests, Practice, and Progress of Aerial Locomotion and Transport", i ...

'', July 6, 2005. * {{Boeing Aircraft

Yellowstone Yellowstone National Park is a List of national parks of the United States, national park of the United States located in the northwest corner of Wyoming, with small portions extending into Montana and Idaho. It was established by the 42nd U ...

Yellowstone projects

See also

References

External links