The Douglas D-906 was a paper project for a heavy lift transport by the Douglas Aircraft Company

Douglas Aircraft Company

The Douglas Aircraft Company was an American aerospace manufacturer, based in Long Beach, California. It was founded in 1921 by Donald Wills Douglas, Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas...

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Douglas spent four years studying a heavy lift logistics aircraft capable of moving outsize payloads and Army units, for which no capability existed, under the CX-4 and Experimental Cargo-Heavy Logistics Support (CX-HLS) programs, which ultimately produced the C-5

C-5 Galaxy

The Lockheed C-5 Galaxy is a large military transport aircraft built by Lockheed. It provides the United States Air Force with a heavy intercontinental-range strategic airlift capability, one that can carry outsize and oversize cargos, including all air-certifiable cargo. The Galaxy has many...

. The D-906 was one of them.

With a shoulder wing and six 30000 lb (13,608 kg)-thrust turbofan

Turbofan

The turbofan is a type of airbreathing jet engine that is widely used for aircraft propulsion. A turbofan combines two types of engines, the turbo portion which is a conventional gas turbine engine, and the fan, a propeller-like ducted fan...

s, it superficially resembled the Antonov An-225

Antonov An-225

The Antonov An-225 Mriya is a strategic airlift cargo aircraft, designed by the Antonov Design Bureau in the 1980s. It is the world's heaviest aircraft. The design, built in order to transport the Buran orbiter, was an enlargement of the successful An-124 Ruslan...

. Planned payload was to be 195000 lb (88,451 kg) for up to 3260 nmi (3,751.6 mi; 6,037.5 km), with a takeoff weight of 606000 lb (274,877 kg).

Length was to be 190 foot, span 192 foot, and wing area 4920 ft2.

Source

• Francillon, René J. McDonnell Douglas aircraft since 1920. New York: Putnam, 1979. Page 718.

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