![]() Previously, an MD-81 was used as a testbed for propfan engines, such as the General Electric GE36 and the Pratt & Whitney/Allison 578-DX. Propfan engine Civilian: MD-94X A concept illustration of the McDonnell Douglas MD-94X An MD-81 testbed for propfan engines at Farnborough Airshow 1988įurther information: McDonnell Douglas MD-94Xįor several years, McDonnell Douglas proposed powering the MD-90 with two unducted fan (UDF) or propfan engines, designated the MD-94X. Powered by the 26,500 lbf thrust (118 kN) CFM56-5 or V2500, the MD-90X replaced the MD-89 as McDonnell Douglas's proposed new turbofan offering, and it was designed to compete with the Boeing 757. Unlike the MD-91 and MD-92 derivatives and the clean-sheet MD-94X proposal, the MD-90X would still use turbofan engines. Starting in late 1986, McDonnell Douglas began offering the MD-90X, a 25 ft (7.6 m) stretch of the MD-80. The type was 57-inch-longer (1.4 m) longer than MD-80 and featured a glass cockpit (electronic instrumentation) and more powerful, quieter, fuel-efficient IAE V2525-D5 engines, with the option of upgrading to an IAE V2528 engine. The MD-90, the stretched derivative of the MD-80 and thus the third generation of the DC-9 family, was launched on Novemwhen Delta Air Lines placed an order for 50 MD-90s, with options to purchase a further 110 aircraft. Stretching: MD-90 An MD-90-30 with airline Blue1 pictured in 2008 In 1983, McDonnell Douglas began studies on derivatives of the MD-80 series or the third generation of the DC-9 family, which later became known as the MD-90 series. A total of 1,191 MD-80 airliners were delivered from 1980 to 1999, making it the company's most successful airliner model. The MD-80 series has five variants or production versions, which are designated with a non-zero second digit similar to the DC-9 series, the MD-81, MD-82, MD-83, MD-87, and the MD-88. The aircraft series was originally designated as Series 80 or stylized as the Super 80, which was a 14 ft 3 in (4.34 m) lengthened Series 50 with a higher maximum take-off weight (MTOW) and higher fuel capacity, as well as next-generation Pratt and Whitney JT8D-200 series engines and an improved wing design. The MD-80 series, the first derivative or the second generation of the DC-9 family, entered service in 1980. The success prompted the manufacturer to further develop the first generation DC-9 family into its second generation. The aircraft series was an all-new design, using two rear fuselage-mounted turbofan engines, a T-tail configuration, and a narrow-body fuselage design with five-abreast seating for 80 to 135 passengers. The DC-9 series, the first generation of the DC-9 family with five members or variants (DC-9-10 / DC-9 Series 10, Series 20, Series 30, Series 40, and Series 50) and ten production versions (Series 11, Series 12, Series 14, Series 15, Series 21, Series 31, Series 32, Series 33, Series 34, Series 41, and Series 51), was a commercial success with 976 units built when production ended in 1982. It was involved in three hull-loss accidents with only one fatality being a fire related or non-aeronautical accident. It was briefly retired before being put into testing with Boeing Commercial Airplanes for the X-66A program. Delta Air Lines flew the final MD-90 passenger flight on June 2, 2020. Production ended in 2000 after 116 deliveries. The shrunken derivative of MD-80 or shorter variant of MD-90, originally marketed as MD-95, was later renamed the Boeing 717 following McDonnell Douglas' merger with Boeing in 1997. It kept the MD-88's electronic flight instrument system (EFIS). Its 5 ft (1.4 m) longer fuselage seats 153 passengers in a mixed configuration over up to 2,455 nmi (4,547 km), making it the largest member of the DC-9 family. The MD-90 competed with the Airbus A320ceo family and the Boeing 737 Next Generation. The MD-90 first flew on February 22, 1993, and the first delivery was in February 1995 to Delta. It was a stretched derivative of the MD-80 and thus part of the DC-9 family.Īfter the more fuel-efficient IAE V2500 high-bypass turbofan was selected, Delta Air Lines became the launch customer on November 14, 1989. The airliner was produced by the developer company until 1997 and then by Boeing Commercial Airplanes. The McDonnell Douglas (later Boeing) MD-90 is an American five-abreast single-aisle airliner developed by McDonnell Douglas from its successful model MD-80. 1 in use with Boeing Commercial Airplanes
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