| 词条 | Beardmore W.B.XXVI | |||||||||||||||
| 释义 |
The Beardmore W.B.XXVI (W.B.26) was a prototype British two-seat fighter of the 1920s. A single engined biplane, one example was built and evaluated by Latvia, but was not accepted for service. Development and designIn 1924, the Scottish shipbuilding company of William Beardmore and Company designed a two-seat fighter for Latvia, the W.B.XXVI. Beardmore's chief designer, W.S. Shackleton produced a wooden single-bay biplane, powered by a Rolls-Royce Eagle engine. The slab-sided fuselage was of hexagonal section, with the crew of two seated in separate cockpits. To reduce drag, the wings had no bracing wires, bracing being solely by means of struts, with a large inter-wing gap. A Lamblin radiator was installed in the leading edge of the lower wing. Instead of the normal Vickers and Lewis machine guns, the aircraft was armed by Beardmore's own gas-operated Beardmore-Farquhar machine guns.[1][2] The prototype first flew some time in 1925.[3] While it proved to be manoeuvrable,[4][4] it was underpowered, and performance was poor, with the Latvians unwilling to pay for replacement of the Eagle with a more powerful Napier Lion engine. It was sent to Latvia for evaluation in 1926, but was only flown three times in Latvia before it was rejected, and was eventually sent back to Beardmore and scrapped. No more W.B.XXVIs were built.[5] Specifications{{aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=Limited Editions Part 4: Beardmore W.B.XXVI[6] |crew=2 |capacity= |payload main= |payload alt= |payload more= |length main= 27 ft 10½ in |length alt=8.50 m |span main=37 ft 0 in |span alt=11.28 m |height main= |height alt= |area main= 356 sq ft |area alt= 33.1 m² |airfoil= |empty weight main= 2,555 lb |empty weight alt= 1,162 kg |loaded weight main= 3,980 lb |loaded weight alt= 1,809 kg |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |max takeoff weight more= |more general= |engine (prop)=Rolls-Royce Eagle IX |type of prop= water cooled V-12 |number of props=1 |power main= 360 hp |power alt=269 kW |power original= |power more= |max speed main= 145 mph |max speed alt=233 km/h |max speed more= |cruise speed main= |cruise speed alt= |cruise speed more |stall speed main= |stall speed alt= |stall speed more= |never exceed speed main= |never exceed speed alt= |range main= |range alt= |ferry range main= |ferry range alt= |ferry range more= |endurance=4 hr |ceiling main= 20,000 ft |ceiling alt= 6,100 m |climb rate main= |climb rate alt= |loading main=11.2 lb/sq ft |loading alt=54.7 m² |thrust/weight= |power/mass main=0.09 hp/lb |power/mass alt=0.15 kW/kg |more performance=*Climb to 15,000 ft: 20 min |guns= 2× fixed forward firing Beardmore-Farquhar machine guns and 1 or two flexibly mounted Beardmore-Farquhar machine guns on Scarff ring |bombs= |rockets= |missiles= |hardpoints= |hardpoint capacity= |avionics= }}{{aircontent |see also= |related= |similar aircraft= |lists= }} Notes1. ^Jarrett 1996, pp.27-29. 2. ^Flight 31 December 1925, pp.850-851. 3. ^Mason 1991, p.175. 4. ^Flight 25 February 1925, p.111. 5. ^Jarrett 1996, p.31. 6. ^1 Jarrett 1996, p.30. References{{refbegin}}
External links{{commons category|Beardmore aircraft}}
5 : British fighter aircraft 1920–1929|Beardmore aircraft|Single-engined tractor aircraft|Biplanes|Aircraft first flown in 1925 |
|||||||||||||||
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。