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

Douglas Aircraft Company The Douglas Aircraft Company was an American aerospace manufacturer based in Southern California. It was founded in 1921 by Donald Wills Douglas Sr. and later merged with McDonnell Aircraft in 1967 to form McDonnell Douglas; it then operated as ...

. 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. The D-906 was one of them. With a shoulder wing and six -thrust

turbofan The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft engine, aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which ac ...

s, it superficially resembled the

Antonov An-225 The Antonov An-225 Mriya ( uk, Антонов Ан-225 Мрія, lit=dream' or 'inspiration; NATO reporting name: Cossack) was a strategic airlift cargo aircraft designed and produced by the Antonov Design Bureau in the Soviet Union. It was ...

. Planned payload was to be for up to , with a takeoff weight of . Length was to be , span , and wing area {{convert, 4920, ft2, m2, abbr=on.

Sources

* Francillon, René J. ''McDonnell Douglas aircraft since 1920''. New York: Putnam, 1979. Page 718. ''This page uses content originally create
here
'. Cancelled military aircraft projects of the United States D-906 Six-engined jet aircraft High-wing aircraft