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Vickers Vendace

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Vendace
General information
TypeTrainer
ManufacturerVickers
Primary userBolivia
Number built5
History
Introduction date1928
First flight1926
Retired1933

TheVickers Vendace was a 1920sBritishtrainer aircraft. It was originally designed as afloatplane trainer for theRoyal Air Force.

Background

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In October 1924, the BritishAir Ministry issuedSpecification 5A/24 for a floatplane trainer. To meet this requirement,Vickers designed a two-seatbiplane, the Vickers Type 120 Vendace I. In August 1925, the Air Ministry placed an order for a single prototype, in addition to competing aircraft fromParnall andBlackburn, (theParnall Perch andBlackburn Sprat).[1][2]

Design and development

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The Vendace I was a two-bay biplane withfolding wooden wings and a steel tubefuselage, powered by aRolls-Royce Falcon engine. Itsundercarriage could be changed from floats to wheels in ten minutes, while its fuel supply was held in two streamlined tanks above the upper wing.[1]

The first Vendace first flew at Brooklands by March 1926, and then underwent successful trials as a landplane, including operation from theaircraft carrierHMS Furious.[3] In 1927, these were followed by testing in seaplane configuration at theMarine Aircraft Experimental Establishment,Felixstowe.[4] The trials were successful, with the Vendace being selected to meet the RAF's needs. The requirement was soon cancelled as a cost saving measure, although the RAF did retain the aircraft for experimental purposes.[4][5]

Vickers built a second aircraft, the Type 157 Vendace II, as a private venture, with anADC Nimbus (an inline six-cylinder engine derived from theSiddeley Puma) that replaced the Falcon of the Vendace I. It first flew in November 1927, and was sold to theAircraft Operating Company for survey operations inSouth America.[6][7]

Development continued with the Type 155 Vendace III powered by a 300 hp (220 kW)Hispano-Suiza 8F, and three were sold toBolivia for use as trainers,[8] at a cost of£ 9,997 for the three aircraft.[9]

Operational history

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In July 1929,[9] the three Bolivian Vendaces entered service with the Escuela Militar de Aviación.[10] While the Vendaces maintained good performance at the high altitude of Bolivia's training airfield atLa Paz, they experienced engine problems, blamed on dusty conditions in the Bolivian summer, resulting in the aircraft being grounded several times while waiting for spare parts for the engines to be delivered from France.[11][12] Two Vendaces were listed as still being in service in 1933, with one being used as a communications aircraft during theChaco War before being destroyed by Bolivian forces during a retreat in December 1933.[9]

Variants

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Type 120 Vendace I
Prototype convertible landplane/seaplane for RAF, powered by 275 hp (205 kW)Rolls-Royce Falcon III engine. One (serial numberN208) built.
Type 157 Vendace II
Private venture aircraft powered by 300 hp (220 kW) ADC Nimbus engine. One (registeredG-EBPX) built, converted for airborne survey purposes.
Type 155 Vendace III
Trainer for Bolivia, powered by 300 hp (220 kW) Hispano-Suiza 8F engine. Three built.

Operators

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 Bolivia
 United Kingdom

Specifications (Vendace III)

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Vickers Vendace I

Data from Vickers Aircraft since 1908[13]

General characteristics

  • Crew: 2
  • Length: 33 ft 3 in (10.13 m)
  • Wingspan: 44 ft 7 in (13.59 m)
  • Height: 12 ft 9 in (3.89 m)
  • Wing area: 533 sq ft (49.5 m2)
  • Empty weight: 2,604 lb (1,181 kg)
  • Gross weight: 3,207 lb (1,455 kg)
  • Powerplant: 1 ×Hispano-Suiza 8F V-8 water-cooled piston engine, 300 hp (220 kW)
  • Propellers: 2-bladed fixed-pitch propeller

Performance

  • Maximum speed: 119 mph (192 km/h, 103 kn) at 19,000 ft (5,791 m)
  • Service ceiling: 25,800 ft (7,900 m)
  • Rate of climb: 720 ft/min (3.7 m/s)
  • Wing loading: 6.02 lb/sq ft (29.4 kg/m2)
  • Power/mass: 0.094 hp/lb (0.155 kW/kg)

See also

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Related lists

References

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Wikimedia Commons has media related toVickers Vendace.
  1. ^abAndrews and Morgan 1988, p. 194
  2. ^Jackson 1968, p. 233
  3. ^Andrews and Morgan 1988, p. 195
  4. ^abDonald 1997, p. 893
  5. ^Jackson 1968, p. 235
  6. ^Andrews and Morgan 1988, p. 196.
  7. ^"Air Survey Developments".Flight. Vol. XX, no. 1017. 21 June 1928. p. 474. Retrieved23 February 2008.
  8. ^Andrews and Morgan 1988, p. 197
  9. ^abcHagedorn and Sapienza 1997, p. 115
  10. ^Klaus, Erich."Bolivia Air Force Aircraft Types: Vickers 155 Vendace III"Aeroflight.co.uk, 15 March 2007. Retrieved 23 February 2008.
  11. ^Hagedorn and Sapienza 1997, pp. 113, 115
  12. ^Andrews and Morgan 1988, p. 198
  13. ^Andrews and Morgan 1988, p. 206

Bibliography

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Type
numbers
Early types
Civilian
Airships
Military
1st World War
Fighting Biplanes
Fighters
Bombers, GP and
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Military Transports
Trainers
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