| 词条 | Beagle B.206 | |||||||||||||||||
| 释义 |
The Beagle B.206 is a 1960s British seven-seat twin-engined liaison and communication aircraft built by Beagle Aircraft Limited at Shoreham Airport and Rearsby Aerodrome. Design and developmentThe design of a twin-engined light transport began in 1960 and the prototype registered G-ARRM (designated the B.206X) first flew from Shoreham Airport, West Sussex on 15 August 1961.[1] The prototype aircraft was a five-seat all metal low-wing monoplane powered by two Continental flat-six engines. Owned since 1990 by Brooklands Museum then loaned to the Bristol Aero Collection before eventually being restored by a team of volunteers at Shoreham Airport, it was loaned to the Farnborough Air Sciences Trust Museum at Farnborough, Hampshire from 2011 until 2017. With the expiry of the loan agreement, it was dismantled and transported from FAST to Brooklands by road on 3 August 2017. The second prototype (registered G-ARXM and designated B.206Y) was slightly larger with a larger-span wing and seating for seven. Two aircraft (designated B.206Z) were built for evaluation by the Ministry of Aviation at Boscombe Down and an order for twenty aircraft (designated B.206R) for the Royal Air Force followed.[1][2] The RAF aircraft were designated Basset CC.1 and were built at Rearsby Aerodrome, Leicestershire. Initial production was the Series 1 aircraft which were powered by 310 hp Rolls-Royce Continental GIO-470A engines, and the first aircraft (G-ASMK) first flew on 17 July 1964. This aircraft was then converted as the first Series 2 aircraft with 340 hp Continental GTSIO-520C turbocharged engines and first flew as such on 23 June 1965.[1] The production Series 2 (initially known as the B.206S) was also fitted with a large freight door. The aircraft was soon in demand with air taxi companies and as a light transport for companies. Three aircraft were delivered to the Royal Flying Doctor Service in Australia.[3] A Series 3 was developed with a raised rear fuselage to carry 10-passengers but only two were flown as such, one modified from a Series 2 airframe (G-35-28 c/n B.074) was used as the "Aerodynamic Test Vehicle" and later re-converted back to a Series 2 as G-AXPV[4] and the second (G-AWLN, c/n B.080) which was converted on the production line and ultimately sold in Brazil[5]; a third airframe (B.037, which had been damaged in production) was converted as a mock-up only and never flown[6]. When the company needed the room at Rearsby to build the Beagle Pup, production of the B.206 ended with the 79th aircraft, (c/n B.080). Four further fuselages and a number of fuselage sections had also been constructed but were never completed[7]. Operational historyA competition was held at RAF Northolt in March 1963 between the B.206 and the de Havilland Devon for an aircraft to replace the Avro Anson, resulting in 20 Bassets being ordered for the RAF. The first delivery to RAF communications squadrons was made in May 1965. It was powered by two Rolls-Royce/Continental GIO-470 six cylinder horizontally-opposed engines giving it a maximum speed of 220 mph and a range of 1,645 miles. Up to eight persons could be carried. The Northolt aircraft were originally based at RAF Bovingdon near Watford, Hertfordshire with the Southern Communications Squadron until the 'SCS' moved to Northolt and became 207 Squadron on 4 February 1969. Another squadron, the Northern Communications Squadron, operated Bassets from RAF Topcliffe near Thirsk in North Yorkshire, later becoming 26 Squadron at RAF Wyton. Most aircraft were removed from RAF service on 2 May 1974 and sold for civil use. The first civil-ordered aircraft (a Series 1 registered G-ASWJ) was delivered in May 1965 to Rolls-Royce Limited at Hucknall. In 1975, Rolls-Royce retired this aircraft and donated it to RAF Halton for use by apprentices as 8449M; it is now with the Midland Air Museum at Coventry[8] An unusual use was for one of the first aircraft registered G-ATHO which was bought by Maidenhead Organ Studios Limited for transporting electronic organs.[3] Other examples were operated by UK-based air charter firms including Air Kilroe. The type was sold to and operated by civilian firms and individuals in several countries including Australia, Brazil and the United States. Bassets were sold after RAF service to the United States and Paraguay. Variants
Prototype, 1 built.
Larger prototype, 1 built.
Pre-production military version, 2 built.
Military version, 20 built.
Seven-seat civil production aircraft, 11 built.
Higher-performance civil production aircraft, 45 built.
10-seat version, 2 converted from Series 2. OperatorsMilitary operators
Planned
Civil operators
Accidents and incidents
Specifications (B.206 Series 2){{aircraft specifications|ref=British Civil Aircraft since 1919: Volume I [12] |plane or copter?=plane |jet or prop?=prop |crew= |length main= 33ft 8in |length alt= 10.26 m |span main= 45 ft 9½ in |span alt= 13.96 m |height main= 11 ft 4 in |height alt= 3.45 m |area main= 214 ft² |area alt= 19.88 m² |empty weight main= 4,800 lb |empty weight alt= 2177 kg |loaded weight main= |loaded weight alt= |max takeoff weight main= 7,499 lb |max takeoff weight alt= 3401 kg |engine (prop)=Rolls-Royce Continental GTSIO-520-C |type of prop= flat-six piston engine |number of props=2 |power main=340 hp |power alt= 254 kW |max speed main= 258 mph[2] |max speed alt= 224 knots, 415 km/h |cruise speed main=218 mph |cruise speed alt=190 knots, 351 km/h |range main= 1,620 mi |range alt= 1,409 NM, 2608 km |ceiling main= 27,100 ft [13] |ceiling alt= 8260 m |climb rate main=1,340 ft/min |climb rate alt=6.81 m/s |loading main= |loading alt= |power/mass main= |power/mass alt= |more performance= |armament= }} See also{{aircontent|related= |similar aircraft=
|lists=
|see also= }} ReferencesNotes1. ^1 2 Jackson 1974, p.198. 2. ^1 {{cite web |accessdate=2007-03-11 |url=http://www.airliners.net/info/stats.main?id=60 |title=The Beagle B-206 |publisher=Airliners.net |archiveurl=https://web.archive.org/web/20070213073244/http://www.airliners.net/info/stats.main?id=60 |archivedate=13 February 2007 |deadurl=no |df= }} 3. ^1 Jackson 1974, p.199. 4. ^Wenham 2015, p.182 5. ^Wenham 2015, pp.182-183 6. ^Wenham 2015, p.181 7. ^Wenham 2015, p.422 8. ^Wenham 2015, p.409. 9. ^Wenham 2015, p.140. 10. ^Halley 2001, page 82 11. ^{{cite web |last=unnamed author |first= |authorlink= |coauthors= |title=Aviation Accident Database & Synopses |work= |publisher=(United States) National Transportation Safety Board |url=http://www.ntsb.gov/ntsb/brief.asp?ev_id=46836&key=0 |format=text |doi= |accessdate=2007-08-30 |archiveurl=https://web.archive.org/web/20070929130857/http://www.ntsb.gov/ntsb/brief.asp?ev_id=46836&key=0 |archivedate=29 September 2007 |deadurl=no |df= }} 12. ^Jackson 1974, p.200. 13. ^Donald 1997, p.95. Bibliography{{refbegin}}
|publisher = Blitz Editions|location=Leicester, UK|isbn = 1-85605-375-X}}
External links{{Commons category|Beagle B.206}}
6 : British civil utility aircraft 1960–1969|British military transport aircraft 1960–1969|Beagle aircraft|Low-wing aircraft|Aircraft first flown in 1961|Twin piston-engined tractor aircraft |
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