Douglas D-906

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

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 30000 lb-thrust turbofans, it superficially resembled the Antonov An-225. Planned payload was to be 195000 lb for up to 3260 nmi, with a takeoff weight of 606000 lb.

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