Miles M.26

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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.[1][2] A sub-scale prototype of the X.9 proposal was constructed, designated the Miles M.30.

Variants

Data from: Miles aircraft since 1925[3]

X.2
The X.2 design was first published in Flight in 1938,[4] from work begun in 1936. A projected 300 mph 38-seat transport of about 48,000 lb loaded with 1,000 mile range, it did not use a lifting body fuselage.[5][6][7] Initial design powered by four unspecified Script error: No such module "convert". air-cooled Rolls-Royce piston engines. Span Script error: No such module "convert"., gross weight Script error: No such module "convert".. Met with a cool reaction by the Air Ministry only receiving a paltry £25,000 development contract and a wooden mock-up to Specification 42/37.
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.8)
X.9
A design for a four-engined transport, submitted to the Ministry of Aircraft Production (MAP) 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 (later developed into Air Ministry Specification 2/44) 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 (for 1943), high wing loading and low power loading, seating at least 50 passengers, but was rejected. (Span Script error: No such module "convert"., gross weight Script error: No such module "convert".).
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 Script error: No such module "convert". Bristol Centaurus radial engines, with a span of Script error: No such module "convert". and gross weight of Script error: No such module "convert".). 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)

Data from Miles aircraft since 1925[3]

General characteristics

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References

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  1. Script error: No such module "citation/CS1".
  2. The Westland Dreadnought had been built to test Woyevodsky's ideas in 1924
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  4. Flight likened it to the " Nurflügel (all-wing) aircraft visualised more than twenty years ago by the late Professor Junkers"
  5. Flight 21 April 1938 p 378
  6. Flight 1943 p 703
  7. Flight 28 April 1938 p 411

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External links

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