| 释义 |
- Variants
- Specifications (M.26 X.9)
- References
- External links
| name = M.26 | image = | caption = }}{{Infobox Aircraft Type | type = Airliner | national origin = United Kingdom | manufacturer = Miles Aircraft | designer = | first flight = | introduced = | retired = | status = Cancelled | primary user = | more users = | produced = | number built = 0 | unit cost = | developed from = | variants with their own articles = Miles M.30
}} |
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. VariantsData 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 {{convert|900|hp|abbr=on}} air-cooled Rolls-Royce piston engines. Span {{convert|99|ft|abbr=on}}, gross weight {{convert|61000|lb|abbr=on}}. Met with a cool reaction by the Air Ministry only netting 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 {{convert|150|ft|abbr=on}}, gross weight {{convert|165000|lb|abbr=on}}).
- 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 {{convert|2400|hp|abbr=on}} Bristol Centaurus radial engines, with a span of {{convert|150|ft|abbr=on}} and gross weight of {{convert|120000|lb|abbr=on}}). 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">Miles M.30: X-Minor sub-scale aerodynamic test-bed / research aircraft for the X.9 project.
Specifications (M.26 X.9) {{Aircraft specs
|ref=Miles aircraft since 1925[3]
|prime units?=imp
|genhide=
|crew=4? plus cabin crew
|capacity=100 seats / {{convert|12196|lb|abbr=on}} (Estimated)
|length ft=80
|span ft=116
|height m=
|height ft=
|height in=
|height note=
|wing area sqft=1485
|aspect ratio=9.1
|airfoil=
|empty weight lb=37000
|gross weight lb=76000
|max takeoff weight kg=
|max takeoff weight lb=
|max takeoff weight note=
|fuel capacity=
|more general=
|eng1 number=4
|eng1 name=Rolls-Royce Griffon II
|eng1 type=V-12 liquid-cooled piston engines
|eng1 hp=2000
|eng1 note=plus
|prop blade number=
|prop name=
|prop dia m=
|prop dia ft=
|prop dia in=
|prop dia note=
|perfhide=
|max speed kmh=
|max speed mph=
|max speed kts=
|max speed note=
|cruise speed mph=295
|cruise speed note=at {{convert|8000|ft|abbr=on}}, {{convert|275|mph|kn km/h|abbr=on}}| at {{convert|22000|ft|abbr=on}}
|stall speed kmh=
|stall speed mph=
|stall speed kts=
|stall speed note=
|never exceed speed kmh=
|never exceed speed mph=
|never exceed speed kts=
|never exceed speed note=
|minimum control speed kmh=
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|minimum control speed kts=
|minimum control speed note=
|range miles=2600
|ferry range km=
|ferry range miles=
|ferry range nmi=
|ferry range note=
|endurance=
|ceiling m=
|ceiling ft=
|ceiling note=
|g limits=
|roll rate=
|climb rate ms=
|climb rate ftmin=
|climb rate note=
|time to altitude=
|wing loading lb/sqft=51.3
|fuel consumption kg/km=
|fuel consumption lb/mi=
|power/mass=
|more performance=
}}
References1. ^{{cite web|last1=Woyevodsky|first1=Nicolas|title=US 1391355 A|url=https://www.google.co.uk/patents/US1391355?dq=ininventor:%22Woyevodsky+Nicolas%22&hl=en&sa=X&ved=0ahUKEwjwv7f5jZnXAhVLI8AKHbhaB68Q6AEIKDAA|website=Google Patent Search|publisher=USPTO}}
2. ^The Westland Dreadnought had been built to test Woyevodsky's ideas in 1924
3. ^1 {{cite book |last=Brown |first=Don L. |title=Miles Aircraft since 1925 |publisher=Putnam & Company Ltd. |location=London |year=1970 |edition=1st |isbn=0-370-00127-3|pages=128-130, 202-204, 246-248, 257-265, }}
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
- {{cite |url=http://www.flightglobal.com/pdfarchive/view/1943/1943%20-%202999.html |title=The Miles X |work=Flight |date=23 December 1943 |pages=703-705}}
External links- https://www.secretprojects.co.uk/forum/index.php/topic,8088.15.html
- https://books.google.co.uk/books?id=M3NhrPVyQiIC&pg=PA44&lpg=PA44&dq=Miles+x+airliner&source=bl&ots=VLul-Qi7ly&sig=cgEHOKZ7zxjn8cmo3-cNA34f0LQ&hl=en&sa=X&ved=0ahUKEwjIxLafmZnXAhVGI8AKHX4YCmsQ6AEITTAI#v=onepage&q=Miles%20x%20airliner&f=false
{{Miles aircraft}} 3 : Abandoned civil aircraft projects|Aviation history of the United Kingdom|British airliners 1940–1949 |