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 able to move outsize payloads and Army units, for which no capability then existed, under the CX-4 and Experimental Cargo-Heavy Logistics Support (CX-HLS) programs, which ultimately produced the C-5, and the D-906 was one of those studies. With a shoulder wing and six turbofans of 30,000 lb thrust each, it superficially resembled the Antonov An-225. The planned payload was 195,000 lb over up to 3,260 nautical miles, with a takeoff weight of 606,000 lb, a length of 190 ft 8.5 in, a span of 192 ft 2.5 in and a wing area of 4,920 square feet. It was never built.