Martinsyde Buzzard

Last updated

F.4 Buzzard
Martinsyde Buzzard 070707.JPG
Martinsyde Buzzard in the Aviation Museum of Finland, 2007
General information
Type Biplane fighter
Manufacturer Martinsyde
Designer
Primary users Royal Air Force
Number built~370 [1]
History
First flightJune 1918
Retired1940, by Finland [2]

The Martinsyde F.4 Buzzard was developed as a powerful and fast biplane fighter for the Royal Air Force (RAF), but the end of the First World War led to the abandonment of large-scale production. Fewer than 400 were eventually produced, with many exported. Of particular note was the Buzzard's high speed, being one of the fastest aircraft developed during World War I. [3]

Contents

Design and development

In 1917, George Handasyde of Martinsyde designed a single-seat biplane fighter powered by a Rolls-Royce Falcon V-12 engine, the Martinsyde F.3, with a single prototype being built as a private venture without an official order, and had flown at Brooklands aerodrome by October 1917. [4] six being ordered in 1917, with the first flying in November that year. Its performance during testing was impressive, demonstrating a maximum speed of 142 mph (229 km/h), [5] and was described in an official report as "a great advance on all existing fighting scouts", [6] resulting in an order for six pre-production aircraft and 150 production fighters being placed late in 1917. [7] It soon became clear, however, that all Falcon production was required to power Bristol F.2 Fighters, so an alternative to the Falcon would be needed. [8]

Martinsyde designed a new fighter based on the F.3, but powered by a 300 hp (220 kW) Hispano-Suiza 8 engine, the F.4 Buzzard. The Buzzard, like the F.3, was a single-bay tractor biplane powered by a water-cooled engine. It had new lower wings compared with the F.3, and the pilot's cockpit was positioned further aft, but otherwise the two aircraft were similar. The prototype F.4 was tested in June 1918, and again demonstrated excellent performance, being easy to fly and maneuverable as well as very fast for the time. [9] Large orders followed, with 1,450 ordered from Martinsyde, Boulton & Paul Ltd, Hooper & Co and the Standard Motor Company. It was planned to supply the French Aéronautique Militaire as well as the British Royal Air Force, and production of a further 1,500 aircraft was planned in the United States of America. [10]

Deliveries to the RAF had just started when the Armistice between the Allies and Germany was signed. Martinsyde was instructed to only complete those aircraft which were part built, while all other orders were cancelled. The Buzzard was not adopted as a fighter by the post war RAF, the cheaper Sopwith Snipe being preferred despite its lower performance. [11]

Martinsyde continued development of the Buzzard, buying back many of the surplus aircraft from the RAF, and producing two-seat tourers and floatplanes. After the bankruptcy of Martinsyde in 1922, these aircraft were obtained by the Aircraft Disposal Company which continued to develop and sell F.4 variants for several years. [12]

Martinsyde ADC.1 G-EBKL, used for racing from November 1924 until January 1930 Martinsyde ADC.1.jpg
Martinsyde ADC.1 G-EBKL, used for racing from November 1924 until January 1930

Operational history

Despite the limited production, four of the six Martinsyde F.3s ordered were issued to Home Defence squadrons of the RAF in 1918, with two being operated by No. 39 Squadron RAF on 8 July 1918 [6] and one used by 141 Squadron. [13] The RAF received 310 F.4 Buzzards before the end of the First World War, but only 57 would be used. In the immediate post war period, two Buzzards were used as high speed communications aircraft in support of the British delegation at the Paris Peace Conference in 1919, while a few other Buzzards were used at the Central Flying School. [14] [15]

While the postwar RAF was not buying Buzzards, Martinsyde had some success selling them overseas, with both single and two-seat versions being sold to a number of air forces, including those of Spain (20 aircraft), [16] Finland (15 aircraft) [2] and the Soviet Union (41 aircraft). [2] Some of these aircraft had long careers, with six of the Spanish Buzzards remaining in service at the start of the Spanish Civil War. [17] Following the bankruptcy of Martinsyde, the Aircraft Disposal Company sold eight Jaguar engined versions, the ADC.1 to Latvia, one of these remaining in service until 1938. [18]

Other Martinsydes were sold to civil owners for use as tourers, racing aircraft, and in Newfoundland, for survey flights and seal spotting. [19]

Variants

F.3
Single-seat fighter biplane. Powered by Rolls-Royce Falcon. Seven built. [13]
F.4 Buzzard
Single-seat fighter biplane. Powered by 300 hp (220 kW) Hispano-Suiza 8 engine. Main production type.
F.4 Buzzard 1a
Long range escort fighter for Independent Air Force; three built. [14]
F.4A
Surplus F.4 Buzzards converted into two-seat aircraft for touring and military use.
F.6
Surplus F.4 Buzzards converted into two-seat aircraft; revised wing and landing gear. [20]
F.16
Soviet two-seater derived from F.4, 20 built. [2]
Martinsyde Type A Mk. II Martinsyde F6 ExCC.jpg
Martinsyde Type A Mk. II
Type A.Mk I
Surplus F.4 Buzzards converted into two-seat long-range aircraft. Larger two-bay wings, powered by Rolls-Royce Falcon engines. [21]
Type AS.Mk I
This version of the Type A.Mk I was fitted with float landing gear. [21]
Type A.Mk II
Four-passenger cabin version of A Mk.I. Powered by Hispano-Suiza or Falcon engine. [21] [22]
A.D.C. 1
Single-seat fighter version, powered by a 395 hp (295 kW) Armstrong Siddeley Jaguar radial piston engine. The aircraft was developed by the Aircraft Disposal Company. [23] One prototype. [24] Eight production aircraft were exported to Latvia. [18]
Nimbus Martinsyde
One aircraft was converted by A.D.C. with a 300 hp (220 kW) ADC Nimbus engine. [18] [25]
A.V. 1
One aircraft built for the engine designer Amherst Villiers, painted two-tone blue and white, and nicknamed the Blueprint. [18]
Raymor
a single A.Mk 1 modified for a transatlantic flight attempt, powered by a 285 hp (213 kW) Rolls-Royce Falcon III.

Operators

Canadian Red Ensign (1921-1957).svg  Canada
Flag of Finland.svg  Finland
Flag of France.svg  France
Flag of Ireland.svg  Ireland
Flag of Japan.svg  Japan
Flag of Latvia.svg  Latvia
Flag of Lithuania 1918-1940.svg  Lithuania
Flag of Poland.svg  Poland
Flag of Portugal.svg  Portugal
Flag of Spain (1931-1939).svg  Spain
Flag of the Soviet Union.svg  Soviet Union
Flag of the United Kingdom.svg  United Kingdom
Flag of Uruguay.svg  Uruguay

Specifications

Data fromWar Planes of the First World War: Volume One Fighters. [17]

General characteristics

Performance

Armament

See also

Aircraft of comparable role, configuration, and era

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References

Notes

  1. Holmes, 2005. p 34.
  2. 1 2 3 4 5 6 7 8 Bruce, 1999, p.29
  3. Bruce 1965, p.162. Note:"...one of the fastest then in existence."
  4. Bruce Air International July 1977, p. 28.
  5. Mason 1992, p.118.
  6. 1 2 Bruce 1965, p. 160.
  7. Bruce Air International July 1977, p. 29.
  8. Bruce Air International July 1977, pp. 30–31.
  9. Bruce 1965, p.162.
  10. Bruce 1965, p. 164.
  11. Mason, 1991, pp.137–138
  12. Bruce 1965, pp. 165–166.
  13. 1 2 Bruce Air International August 1977, p. 86.
  14. 1 2 Bruce 1965, p. 165.
  15. 1 2 3 Mason 1992, p. 138.
  16. Bruce, 1999, pp.28-29
  17. 1 2 Bruce 1965, p. 166.
  18. 1 2 3 4 5 6 7 8 Bruce, 1999, p.30
  19. Jackson 1988, pp. 28–34.
  20. 1 2 Bruce, 1999, p.27
  21. 1 2 3 Jackson 1988, p. 28.
  22. Flight 17 August 1922, pp. 463–465.
  23. Flight 27 November 1924, pp. 742–745.
  24. Jackson 1988, p. 33.
  25. Flight 3 June 1926, pp. 315–317.
  26. Jackson, 1988, p.31
  27. Suomen, Keski. "Ilmavoimien koneet vuodesta 1917 alkaen / Airplanes of FAF since 1917." Ilmailumuseo (Aviation Museum of Central Finland). Retrieved: 25 November 2008.
  28. 1 2 Bruce, 1999, p.36
  29. "Air Corps History." Archived 2008-12-22 at the Wayback Machine Irish Defence Forces. Retrieved: 25 November 2008
  30. "Air Corps Aircraft Register." Archived 2011-07-15 at the Wayback Machine IrishAirPics.com. Retrieved: 25 November 2008.
  31. Vistakas 1985, p. 63.
  32. Bruce, 1999, p.35
  33. Bruce, 1999, p.28

Bibliography