| 词条 | Avro 626 | ||||||||||||||||
| 释义 |
The Avro 626 is a single-engined British biplane trainer aircraft produced by Avro during the (1918-1939) inter-war period. Design and developmentThe Model 626 was developed by Avro from the company's Model 621 (Tutor) for export to smaller air forces, the idea being that the 626 would be a single aircraft that could carry out general aircrew training as well as a number of other roles. The types 621 and 626 were both two-seaters, but the latter had an additional cockpit behind the rear seat of the 621 and accessible from it. This additional cockpit was fitted with a Scarff ring for a machine gun and carried equipment for air navigation, wireless and gunnery training. Structurally and aerodynamically, it was almost identical to the Tutor: it had a conventional fabric-covered, metal airframe with single-bay wings. Most of the 626s, like the Tutors had an Armstrong Siddeley Lynx IVC engine of 240 hp (180 kW), but most of those supplied to the Egyptian and Brazilian Air Forces used a 260 hp (190 kW) Cheetah V from the same maker. The usual undercarriage used split, fixed mainwheels and either a tailskid or later a tailwheel, but some 621s appeared on floats and on skis. The prototype was first flown in 1930. Operational historyAvro employed an aggressive sales and marketing effort to introduce the Model 626 to customers throughout the world. An early production demonstration aircraft, marked G-ABFM [1] was sent by sea to South America in 1931. After demonstrations in Buenos Aires and a record-setting flight over the Andes, the aircraft was commandeered by Argentine military officials to help quell a local uprising. The 626 performed so well that an order was immediately placed for 14 additional aircraft. The biggest users were the Air Forces of Chile, Greece, and Portugal. Numerous sales were made to foreign air forces up to 1939, some of which survived in second-line service until 1945. The 621 was not a civil type, though some did briefly appear on the civil registers of the UK (15) and Hong Kong (6).[2] These markings were worn for testing, demonstration and export; only two civil machines stayed on the prewar U.K.register. After the war, two R.A.F. Prefects were civilianised, as was one in New Zealand. Variants
Operators198 Avro 626s and Prefects were produced.[6]
SurvivorsNZ203, c/n 811, survived the war and was purchased by Mr. J. Frogley in 1948 who registered it as ZK-APC.The aircraft ceased flying in 1958 but in the 1980s it was acquired by the Royal New Zealand Air Force Museum and returned to the air. It is the sole surviving active Avro 621 or Prefect. Specifications (Avro 626 (Lynx IVC engine)){{aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=Avro Aircraft since 1908[9] |crew=two |capacity= |length main= 26 ft 6 in |length alt= 8.08 m |span main= 34 ft 0 in |span alt= 10.36 m |height main= 9 ft 7 in |height alt= 2.92m |area main= 300 ft² |area alt= 27.9 m² |airfoil= |empty weight main= 1,765 lb |empty weight alt= 801 kg |loaded weight main= 2,750 lb |loaded weight alt= 1,247 kg |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |more general= |engine (prop)=Armstrong Siddeley Lynx IVC |type of prop=7-cylinder radial |number of props=1 |power main= 210 hp |power alt= 157 kW |power original= |max speed main= 97 kn |max speed alt= 112 mph, 180 km/h |cruise speed main= 83 kn |cruise speed alt= 95 mph, 153 km/h |never exceed speed main= |never exceed speed alt= |stall speed main= |stall speed alt= |range main= 209 nmi |range alt= 240 mi, 386 km |ceiling main= 14,800 ft |ceiling alt= 4,511 m |climb rate main= 880 ft/min |climb rate alt= 4.5 m/s |loading main= 9.18 lb/ft² |loading alt= 44.7 kg/m² |thrust/weight= |power/mass main= 0.076 hp/lb |power/mass alt= 0.126 kW/kg |more performance= |armament= |avionics= }}{{aircontent |related= |similar aircraft= |sequence= |lists= |see also= }} See also{{aircontent|related= Avro 504 - predecessor of the Avro 621/626 |similar aircraft= |sequence= |lists=*List of Interwar military aircraft
|see also= }} Notes1. ^Jackson 1990, p. 295. 2. ^"VR-H." {{webarchive |url=https://web.archive.org/web/20081120060246/http://www.goldenyears.ukf.net/reg_VR-H.htm |date=20 November 2008 }} goldenyears.ukf.net. Retrieved: 8 August 2011. 3. ^Jackson 1990, p. 296-297. Quote: "During their service life these machines were known simply as Avro Prefects without type number, to distinguish them from the Avro 626" 4. ^Jackson 1990, p. 296. 5. ^Němeček 1983, p. 181. 6. ^Jackson 1990, pp. 296-298. Note: 1965 edition data and pagination. The numbers are for ordered aircraft plus demonstrators left behind 7. ^The Avro 626 is listed in some sources as having been used by the Argentine Air Force. This is because its predecessor, the Army Aviation Service, was established in 1912 and dissolved in 1945 when the Air Force was created. 8. ^Pacco 2003, p. 83. 9. ^Jackson 1990, p. 298. ReferencesNotes{{reflist}}Bibliography{{refbegin}}
External links{{commons category|Avro 626}}
5 : British military trainer aircraft 1930–1939|Avro aircraft|Single-engined tractor aircraft|Biplanes|Aircraft first flown in 1930 |
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