| 词条 | Avro 627 Mailplane | |||||||||||||||||||
| 释义 |
The Avro 627 Mailplane was a British biplane developed in 1931 by Avro from the Avro Antelope bomber as a mail plane for use in Canada. Only one was built which ended up being used as a test bed. DevelopmentThe Avro 608 Hawk was a proposed two-seater fighter variant of the Antelope, which was planned to be powered by a Bristol Jupiter radial engine. Although construction of a prototype began, it was incomplete when it was redesigned with a 540 hp (400 kW) Armstrong Siddeley Panther engine as the Avro 622.[1] Following interest by Canadian Airways, who had a possible requirement for a mail plane, Roy Chadwick again redesigned the incomplete prototype to the Avro 627 Mailplane . This was a single-engine, single-bay biplane, powered by a 525 hp (391 kW) Panther engine and fitted for wheel or float operation. The sole prototype (G-ABJM) was certificated on 2 August 1931,[1] and was shipped to Canada for operational trials. While these trials were successful, the Canadian government cut the subsidy for civil aviation and so Canadian Airways was unable to afford new aircraft, so the mailplane was returned to England.[1] The Mailplane was converted in 1933 to a high-speed test bed for the Armstrong Siddeley Tiger engine, the revised aircraft being known as the Avro 654.[1] Operational historyOn return from Canada, the Mailplane was entered in the 1932 King's Cup Race, where it recorded the fastest speed of 176 mph (283 km/h),[2] although owing to the handicap system, it came 29th.[1] After conversion to the Avro 654, the aircraft operational life was short, it being dismantled at Woodford Aerodrome in 1934.[2] Variants
Specifications (Avro 627 Mailplane){{Aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=Avro Aircraft since 1908 [1] |crew=One |capacity=40 ft³ mail compartment |length main= 30 ft 10 in |length alt= 9.40 m |span main= 36 ft 0 in |span alt= 10.98 m |height main= 10 ft 10 in |height alt= 3.30 m |area main= 381 ft² |area alt= 35.4 m² |airfoil= |empty weight main= 3,077 lb |empty weight alt= 1,399 kg |loaded weight main= 5,150 lb |loaded weight alt= 2,341 kg |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |more general= |engine (prop)=Armstrong Siddeley Panther IIA |type of prop=14 cylinder two-row radial engine |number of props=1 |power main= 525 hp |power alt= 391 kW |power original= |max speed main= 148 kn |max speed alt= 170 mph, 274 km/h |cruise speed main= 128 kn |cruise speed alt= 147 mph, 237 km/h |never exceed speed main= |never exceed speed alt= |stall speed main= |stall speed alt= |range main= 487 nmi |range alt= 560 mi, 902 km |ceiling main= 19,000 ft |ceiling alt= 5,800 m |climb rate main= 1,200 ft/min |climb rate alt= 6.1 m/s |loading main= 13.5 lb/ft² |loading alt= 66.1 kg/m² |thrust/weight= |power/mass main= 0.102 hp/lb |power/mass alt= 0.167 kW/kg |more performance= |armament= |avionics= }} See also{{Aircontent|related=
|similar aircraft= |sequence= |lists= |see also= }} References{{commons category|Avro 627 Mailplane}}1. ^1 2 3 4 5 {{cite book |last= Jackson|first= A J |title=Avro Aircraft since 1908 |edition= 2nd|year= 1990 |publisher= Putnam Aeronautical Books|location= London |isbn= 0-85177-834-8}} {{Avro aircraft}}2. ^1 {{cite book |last= Jackson|first= A.J.|authorlink= |coauthors= |title= British Civil Aircraft since 1919 Volume 1|year= 1974|publisher= Putnam|location= London|isbn=0-370-10006-9 }} 5 : British mailplanes 1930–1939|Avro aircraft|Biplanes|Single-engined tractor aircraft|Aircraft first flown in 1931 |
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