Blériot-SPAD S.33

Blériot-SPAD S.33

Role	Airliner
Manufacturer	Blériot
First flight	12 December 1920
Primary users	Franco-Roumaine, CMA SNETA
Number built	ca. 41
Variants	Blériot-SPAD S.46

The Bleriot-SPAD S.33 was a small French airliner developed soon after World War I. A great success, the S.33 dominated its field throughout the 1920s, initially on CMA's Paris-London route, and later on continental routes serviced by Franco-Roumaine. The aircraft was a biplane of conventional configuration whose design owed much to the Blériot company's then-recent fighter designs such as the S.20. Four passengers could be accommodated in an enclosed cabin within the monocoque fuselage, and a fifth passenger could ride in the open cockpit beside the pilot.

One interesting development was a sole example converted by CIDNA to act as a blind-flying trainer. A set of controls was installed inside the passenger cabin, the windows of which had been blacked out.

Variants

S.33: Single-engined passenger transport aircraft, powered by a 260 hp (190 kW) Salmson CM.9 radial piston engine. 41 aircraft built.
S.46: Improved version of the S.33, powered by a 370 hp (280 kW) Lorraine-Dietrich 12Da engine. 38 built and sold to the Franco-Roumaine Company.
S.48: A single S.33 temporarily re-engined in 1925, fitted with a 275 hp (205 kW) Lorraine 7M Mizar engine.
S.50: Luxury version with passenger cabin enlarged to six seats, fitted with a 300 hp (220 kW) Hispano-Suiza 8Fb engine. Three were converted from S.33s, plus two all-new aircraft.

Operators

France

Franco-Roumaine (20 aircraft)
CMA (15 aircraft)

Belgium

SNETA (6 aircraft)

Specifications (S.33)

General characteristics

Crew: one pilot
Capacity: 5 passengers
Length: 9.08 m (29 ft 10 in)
Wingspan: 11.66 m (38 ft 3 in)
Height: 3.20 m (10 ft 6 in)
Wing area: 42.2 m² (454 ft²)
Empty weight: 1,050 kg (2,315 lb)
Gross weight: 2,062 kg (4,546 lb)
Powerplant: 1 × Salmson CM.9 water-cooled radial engine, 194 kW (260 hp)

Performance

Maximum speed: 180 km/h (112 mph)
Cruising speed: 160 km/h (100 mph)
Range: 1,060 km (670 miles)
Service ceiling: 3,800 m (12,470 ft)

References

Taylor, Michael J. H. (1989). Jane's Encyclopedia of Aviation. London: Studio Editions. p. 163.
World Aircraft Information Files. London: Bright Star Publishing. pp. File 890 Sheet 42.
aviafrance.com

External links

Wikimedia Commons has media related to Blériot-SPAD S.33.

"The Spad "Berline" S.33 bis" (PDF). Flight XIII (27): 460–462. 7 July 1921. No. 654. Retrieved 26 April 2012. Contemporary technical description of the Blériot-SPAD S.33, including photographs and drawings.

SPAD and Blériot-SPAD aircraft

SPAD aircraft	S.A-1, 2, 3 & 4 S.C S.D S.E S.F S.G S.H S.V S.VII S.XI S.XII S.XIII S.XIV S.XV S.XVI S.XVII S.XX

Blériot-SPAD aircraft	S.20 S.26 S.27 S.29 S.30 S.33 S.34 S.41 S.42 S.45 S.46 S.48 S.50 S.51 S.54 S.56 S.58 S.61 S.66 S.70 S.81 S.86 S.91 S.116 S.126 S.510 S.710

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