McDonnell Douglas MD-12

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The McDonnell Douglas MD-12 was an aircraft design study undertaken by the McDonnell Douglas company in the 1990s for a "superjumbo" aircraft, first conceived a larger trijet, then stretched to a 4-engine airliner. It was to be similar in size to the Boeing 747, but with more passenger capacity. However, the MD-12 received no orders and was canceled. McDonnell Douglas then studied larger MD-11 derivatives named MD-XX without proceeding.

Design and development

Background

McDonnell Douglas studied improved, stretched versions of the trijet MD-11, named MD-12X md-eleven.net. Retrieved: April 14, 2008. Airliners.net. Retrieved: October 18, 2007. The MDC board of directors agreed in October 1991 to offer the MD-12X design to airlines. MD-12X had a length of 237&nbsp;ft 11 in (72 m) and wingspan of 212.5&nbsp;ft (64.39 m). In November 1991, McDonnell Douglas and Taiwan Aerospace Corporation signed a Memorandum of Understanding to form a company to produce the new design. The new company would have McDonnell Douglas as the majority shareholder (51%) with Taiwan Aerospace (40%) and other Asian...
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