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Blériot-SPAD S.34

From Wikipedia, the free encyclopedia
S.34
General information
TypeTrainer aircraft
ManufacturerBlériot
Designer
Primary usersFrench Air Force
Number built150
History
Introduction date1920
First flight16 July 1920
Retired1936

The Blériot-SPAD S.34 was a French twin-seat, single-engine biplane flight training aircraft designed in 1920. The side-by-side seating arrangement was unique for its time. 150 aircraft were built, 125 for the French Air Force, who used them until 1936.

The Finnish Air Force purchased two S.34s in 1921. Due to inadequate maintenance they did not last long and were withdrawn from service by 1925.

Variants

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Bleriot-SPAD S.34-1
First Bleriot-SPAD S.34 prototype.
Bleriot-SPAD S.34-2
Second Bleriot-SPAD S.34 prototype.
Bleriot-SPAD S.34-3
Third Bleriot-SPAD S.34 prototype.
Bleriot-SPAD S.34
Two-seat primary trainer biplane.
Bleriot-SPAD S.34 bis
Improved variant, powered by a 130-hp (97-kW) Clêrget 9B rotary piston engine. Three were built for the Aéronavale.

Operators

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 France
 Argentina
  • (6 aircraft)
 Finland
 Bolivia

Specification (S.34)

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Blériot-SPAD S.34 3-view drawing from Les Ailes August 18, 1921

Data from Les Ailes, August 1921[1]

General characteristics

  • Crew: One instructor, one pupil
  • Length: 6.50 m (21 ft 4 in)
  • Upper wingspan: 8.12 m (26 ft 8 in)
  • Lower wingspan: 7.40 m (24 ft 3 in)
  • Height: 2.36 m (7 ft 9 in)
  • Wing area: 21 m2 (230 sq ft)
  • Airfoil: Albatrs RA.54
  • Empty weight: 440 kg (970 lb)
  • Gross weight: 690 kg (1,521 lb)
  • Powerplant: 1 × Le Rhône 9C 9-cylinder rotary engine, 60 kW (80 hp)
  • Propellers: 2-bladed

Performance

  • Maximum speed: 136 km/h (85 mph, 73 kn)
  • Service ceiling: 4,000 m (13,000 ft)
  • Time to altitude: 17 min 7 s to 2,000 m (6,600 ft)
  • Landing speed: 40 km/s (89,000 mph; 78,000 kn)

References

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  1. ^ Lemonon, E.-H. (18 August 1921). "La biplaces Spad-Herbemont". Les Ailes (938): 2–3.
  • Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions.
  • Keskinen, Kalevi; Partonen, Kyösti and Stenman, Kari: Suomen Ilmavoimat I 1918-27, 2005. ISBN 952-99432-2-9.
  • Keskinen, Kalevi; Stenman, Kari and Niska, Klaus: Suomen ilmavoimien lentokoneet 1918-1939, Tietoteos, 1976.
  • Hirschauer, Louis; Dollfus, Charles, eds. (1921). L'Année Aéronautique: 1920-1921. Paris: Dunod. p. 35.
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