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 is divided into three projects:
The Boeing 777, commonly referred to as the Triple Seven, is an American long-range wide-body airliner developed and manufactured by Boeing Commercial Airplanes. The 777 is the world's largest twinjet and the most-built wide-body airliner. The jetliner was designed to bridge the gap between Boeing's other wide body airplanes, the twin-engined 767 and quad-engined 747, and to replace aging DC-10 and L-1011 trijets. Developed in consultation with eight major airlines, the 777 program was launched in October 1990, with an order from United Airlines. The prototype was rolled out in April 1994, and first flew in June. The 777 entered service with the launch operator United Airlines in June 1995. Longer-range variants were launched in 2000, and first delivered in 2004.
The Boeing 737 is a narrow-body aircraft produced by Boeing at its Renton factory in Washington. Developed to supplement the Boeing 727 on short and thin routes, the twinjet retained the 707 fuselage width and six abreast seating but with two underwing turbofans instead of four. Envisioned in 1964, the initial 737-100 made its first flight in April 1967 and entered service in February 1968 with Lufthansa. The lengthened 737-200 entered service in April 1968, and evolved through four generations, offering several variants for 85 to 215 passengers.
A wide-body aircraft, also known as a twin-aisle aircraft and in the largest cases as a jumbo jet, is an airliner with a fuselage wide enough to accommodate two passenger aisles with seven or more seats abreast. The typical fuselage diameter is 5 to 6 m. In the typical wide-body economy cabin, passengers are seated seven to ten abreast, allowing a total capacity of 200 to 850 passengers. Seven-abreast aircraft typically seat 160 to 260 passengers, eight-abreast 250 to 380, nine- and ten-abreast 350 to 480. The largest wide-body aircraft are over 6 m (20 ft) wide, and can accommodate up to eleven passengers abreast in high-density configurations.
The Boeing 787 Dreamliner is an American wide-body jet airliner developed and manufactured by Boeing Commercial Airplanes. After dropping its unconventional Sonic Cruiser project, Boeing announced the conventional 7E7 on January 29, 2003, which focused largely on efficiency. The program was launched on April 26, 2004, with an order for 50 aircraft from All Nippon Airways (ANA), targeting a 2008 introduction. On July 8, 2007, a prototype 787 was rolled out without major operating systems, and then the aircraft experienced multiple delays until its maiden flight on December 15, 2009. Type certification was received in August 2011 and the first 787-8 was delivered in September 2011 before entering commercial service on October 26, 2011, with ANA.
The Boeing Sonic Cruiser was a concept jet airliner with a delta wing–canard configuration. It was distinguished from conventional airliners by its delta wing and high-subsonic cruising speed of up to Mach 0.98. Boeing first proposed it in 2001, but airlines generally preferred lower operating costs over higher speed. Boeing ended the Sonic Cruiser project in December 2002 and shifted to the slower, but more fuel-efficient 7E7 airliner.
Boeing Business Jets (BBJ) are versions of Boeing's jet airliners with modifications to serve the private, head of state, and corporate jet market. The jets are capable of flying more than 6,000 nautical miles nonstop and offers more cabin space than traditional long-range business jets. The first BBJ, based on the 737-700, rolled out on July 26, 1998; and had its first flight on September 4, 1998.
Boeing Commercial Airplanes (BCA) is a division of The Boeing Company. It designs, assembles, markets, and sells jet airliners and business jets, and also provides product-related maintenance and training to customers worldwide. BCA operates out of its division headquarters in Renton, Washington, and has more than a dozen engineering, manufacturing, and assembly facilities located throughout the United States and internationally. It includes the assets of the Douglas Aircraft division of the former McDonnell Douglas Corporation, which merged with Boeing in 1997. As of the end of 2021, BCA employed about 35,926 people.
The Airbus A350 is a long-range, wide-body twin-engine jet airliner developed and produced by Airbus. The initial A350 design proposed by Airbus in 2004, in response to the Boeing 787 Dreamliner, would have been a development of the Airbus A330 with composite wings and new engines. Due to inadequate market support, Airbus switched in 2006 to a clean-sheet "XWB" design, powered by two Rolls-Royce Trent XWB high bypass turbofan engines. The prototype first flew on 14 June 2013 from Toulouse, France. Type certification from the European Aviation Safety Agency (EASA) was obtained in September 2014, followed by certification from the Federal Aviation Administration (FAA) two months later.
The Boeing 747-8 is the latest series of the large, long-range wide-body airliners in the Boeing 747 family from Boeing Commercial Airplanes. It is Boeing's largest aircraft. After introducing the 747-400, Boeing considered larger 747 versions as alternatives to the proposed double-deck Airbus A3XX, later developed as the Airbus A380. The stretched 747 Advanced was launched as the 747-8 on November 14, 2005, for a market forecast of 300 aircraft. The first 747-8F Freighter performed its maiden flight on February 8, 2010, and the passenger 747-8I Intercontinental followed suit on March 20, 2011. The cargo version was first delivered in October 2011 and the airliner began commercial service in June 2012.
A twinjet or twin-engine jet is a jet aircraft powered by two engines. A twinjet is able to fly well enough to land with a single working engine, making it safer than a single-engine aircraft in the event of failure of an engine. Fuel efficiency of a twinjet is better than that of aircraft with more engines. These considerations have led to the widespread use of aircraft of all types with twin engines, including airliners, fixed-wing military aircraft, and others.
The Boeing Everett Factory is an airplane assembly facility built by Boeing in Everett, Washington, United States. It sits at the northeast corner of Paine Field and includes the largest building in the world by volume at 13,385,378 m3 and covers 98.7 acres (39.9 ha). The entire complex spans both sides of State Route 526. The factory was built in 1967 for the Boeing 747 and has since been expanded several times to accommodate new airliners, including the 767, 777, and 787 programs.
The competition between Airbus and Boeing has been characterized as a duopoly in the large jet airliner market since the 1990s.
The Emirates fleet is composed of two wide-bodied aircraft families, the Airbus A380 and Boeing 777. The airline also has the Airbus A350-900, Boeing 777X and Boeing 787 aircraft on order.
Boeing South Carolina is an airplane assembly facility built by Boeing in North Charleston, South Carolina, United States. Located on the grounds of the joint-use Charleston Air Force Base and Charleston International Airport, the site is the final assembly and delivery point for the Boeing 787 Dreamliner. Boeing opened the site in July 2011, after purchasing the facilities of suppliers Vought and Global Aeronautica in 2008 and 2009. The final assembly building covers 1,200,000 square feet (110,000 m2) and opened on November 12, 2011. As of September 28, 2017, the site employs 6,943 workers and contractors.
The Boeing 737 MAX is the fourth generation of the Boeing 737, a narrow-body airliner manufactured by Boeing Commercial Airplanes, a division of American company Boeing. It succeeds the Boeing 737 Next Generation (NG) and competes with the Airbus A320neo family. The new series was announced on August 30, 2011. It took its maiden flight on January 29, 2016 and was certified by the United States Federal Aviation Administration (FAA) in March 2017. The first delivery was a MAX 8 in May 2017 to Malindo Air, with which it commenced service on May 22, 2017.
The Boeing 777X is the latest series of the long-range, wide-body, twin-engine jetliners in the Boeing 777 family from Boeing Commercial Airplanes. The 777X features new GE9X engines, new composite wings with folding wingtips, greater cabin width and seating capacity, and technologies from the Boeing 787. The 777X was launched in November 2013 with two variants: the 777-8 and the 777-9. The 777-8 provides seating for 384 passengers and has a range of 8,745 nautical miles [nmi] while the 777-9 has seating for 426 passengers and a range of over 7,285 nmi.
British Airways operates a fleet of Airbus and Boeing aircraft. It operates a single-aisle fleet of Airbus aircraft, including the Airbus A320-200 and the Airbus A320neo. It also operates a twin-aisle aircraft fleet of the Airbus A350-1000, Airbus A380, Boeing 777 and 787 wide-body aircraft, with most of it powered by Rolls-Royce Trent engines.
Dutch flag-carrier airline KLM operates a fleet of 107 aircraft. The narrow-body fleet is composed of Boeing 737 Next Generation aircraft which will be replaced by the Airbus A320neo family aircraft in the mid 2024. Airbus A330, Boeing 777 and Boeing 787 Dreamliner widebody aircraft are used primarily on long-haul flights. In September 2023, Air France-KLM announced an order for 50 Airbus A350s. These will replace the groups’ remaining Airbus A330s and Boeing 777-200ERs, and will be split between Air France and KLM.
The middle of the market, often abbreviated MoM, is the airliner market between the narrowbody and the widebody aircraft, a market segmentation used by Boeing Commercial Airplanes since at least 2003. Both Airbus and Boeing produce aircraft that serve this segment.
The New Midsize Airplane (NMA), or New Midsize Aircraft, is a concept airliner proposed by Boeing to fill the middle of the market segment.