Miles M.26


Miles M.26 was the designation used to cover the family of X-series design proposals, for long-range transport aircraft. The common factors of most X design proposals were the use of a blended wing body and engines buried in the wings, based on principles patented by Nicolas Woyevodsky. A sub-scale prototype of the X.9 proposal was constructed, designated the Miles M.30.

Variants

Data from: Miles aircraft since 1925
;X.2
;X.3:A projected six-engined variant.
;X.4 to X.8: Variants of the X blended wing theme which didn't proceed further than the concept stage, including an eight-engined transatlantic airliner.
;X.9:A design for a four-engined transport, submitted to the Ministry of Aircraft Production in Autumn of 1942, powered by four Rolls-Royce Griffon V-12 piston engines and fitted with retractable tricycle undercarriage.
;X.10: A small twin-engined airliner / transport, following the blended wing concept but with externally mounted engines.
;X.11:After the Brabazon Committee released the Type I specification for the post-war transatlantic airliner, only to Bristol, F.G. Miles unofficially submitted a design based on the Xseries of blended wing aircraft. The X.11 was to be eight-engined, with high cruising speed, high wing loading and low power loading, seating at least 50 passengers, but was rejected..
;X.12: A bomber version of the X.11
;X.13: A troop transport version of the X.11
;X.14: After rejection of the X.11, Miles was unofficially encouraged to submit a design for a smaller aircraft not competing with the Brabazon specifications, powered by four Bristol Centaurus radial engines, with a span of and gross weight of ). This submission was also summarily rejected.
;X.15:A revised X.14, to be powered by six Napier Sabre H-24 in-line engines.
;Miles M.30: X-Minor sub-scale aerodynamic test-bed / research aircraft for the X.9 project.

Specifications (M.26 ''X.9'')