| 词条 | Parnall Elf | ||||||||||||||
| 释义 |
The Parnall Elf is a British two seat light touring aircraft of the 1920s. Built by George Parnall & Co. the Elf was the last aircraft designed by Harold Bolas before he left the company to go to the United States. Design and developmentThe Parnall Elf was designed by Harold Bolas, chief designer of the reformed George Parnall & Co. The type made its public debut at Olympia in July 1929.[1] The Elf was a biplane of wood and fabric construction with staggered wings set well forward on the fuselage as a feature to assist crew escape in an emergency. The wings were unusually braced with 'vee' interplane struts which dispensed with any flying wires [2] and could be folded for ease of hangarage. The main fuel tank was fitted in the fuselage, while a pump raised the fuel to a small tank in the wing centre section where it was then fed to the engine by gravity. An Elf placed fifth in the 1930 King's Cup Air Race out of a field of 88 entrants. The purchase price of the aircraft at this time was between £875 and £890.[3] Survivors
Specifications (Elf){{aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=The Shuttleworth Collection, 1969. |crew=Two |capacity= |length main= 22 ft 10.5 in |length alt= 7 m |span main= 31 ft 2.5 in (upper wing) 26 ft 9 in (lower wing) 7 ft 2 in (folded) |span alt= 9.5 m |height main= 8 ft 6 in |height alt= 2.6 |area main= 195 ft² |area alt= 18 m² |airfoil= |empty weight main= 1,140 lb |empty weight alt= 517 kg |loaded weight main= |loaded weight alt= |useful load main= |useful load alt= |max takeoff weight main= |max takeoff weight alt= |more general= |engine (prop)= Cirrus Hermes II |type of prop= in-line piston engine |number of props=1 |power main= 115 hp |power alt= 86 kW |power original= |max speed main= 116 mph |max speed alt= 187 km/h |cruise speed main= |cruise speed alt= |never exceed speed main= |never exceed speed alt= |stall speed main= |stall speed alt= |range main= |range alt= |ceiling main= |ceiling alt= |climb rate main= |climb rate alt= |loading main= |loading alt= |thrust/weight= |power/mass main= |power/mass alt= |more performance= |armament= |avionics= }} See also{{aircontent|related= |similar aircraft=
|lists= |see also= }} ReferencesNotes1. ^Ogilvy, 1989. 2. ^Ogilvy, 1989 3. ^Guttery, 1969. p. 43. 4. ^The Shuttleworth Collection – Parnall Elf www.shuttleworth.org Retrieved: 8 April 2010 Bibliography{{refbegin}}
External links{{commons category}}
6 : British civil utility aircraft 1920–1929|British sport aircraft 1920–1929|Single-engined tractor aircraft|Biplanes|Parnall aircraft|Aircraft first flown in 1929 |
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