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Savoia-Marchetti S.74

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S.74
General information
TypeAirliner then military transport aircraft
National originItaly
ManufacturerSavoia-Marchetti
Designer
Primary usersLATI
Number built3
History
Introduction date1935
First flight16 Nov 1934
Retired1943
Developed fromSavoia-Marchetti S.72

The Savoia-Marchetti S.74 was a four-engine airliner developed by Savoia-Marchetti for Ala Littoria.

Design and development

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The prototype first flew on 16 November 1934. Only three were ever built.[1]

Operational history

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The aircraft were used in passenger service. On 22 December 1937, one broke the speed record over 1,000 kilometres (620 mi), at 322.089 km/h (200.137 mph).[2] When Italy entered World War II in 1940, they were put into service as military transport aircraft for the Regia Aeronautica. None of the three survived the war.

Operators

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Civil operators

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 Kingdom of Italy

Military operators

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 Kingdom of Italy

Specifications (S.74)

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Paris-Le Bourget Airport in 1935. I-URBE (in the foreground) is an S.74; the other aircraft is a Douglas DC-2 airliner operated by the Spanish airline LAPE (Lineas Aéreas Postales Españolas).

Data from World Encyclopedia of Civil Aircraft,[3] Italian Civil and Military Aircraft 1930–1945[1]

General characteristics

  • Crew: 4
  • Capacity: 24 passengers + 363 kg (800 lb) baggage + 726 kg (1,600 lb) freight
  • Length: 19.49 m (63 ft 11+12 in)
  • Wingspan: 30.00 m (98 ft 5 in)
  • Height: 5.50 m (18 ft 0+12 in)
  • Wing area: 119.96 m2 (1,291.2 sq ft)
  • Empty weight: 7,784 kg (17,160 lb)
  • Gross weight: 14,000 kg (30,865 lb)
  • Powerplant: 4 × Piaggio Stella P.X R.C. 9-cylinder air-cooled radial piston engines, 520 kW (700 hp) each for take-off
  • Propellers: 3-bladed variable-pitch metal propellers

Performance

  • Maximum speed: 330 km/h (210 mph, 180 kn)
285 km/h (177 mph; 154 kn) on three engines
  • Cruise speed: 300 km/h (190 mph, 160 kn)
  • Range: 1,000 km (620 mi, 540 nmi)
  • Service ceiling: 7,000 m (22,960 ft)
  • Time to altitude: 3,000 m (9,840 ft) in 8 minutes 55 seconds
5,000 m (16,400 ft) in 19 minutes 43 seconds

See also

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Aircraft of comparable role, configuration, and era

References

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  1. ^ a b Thompson, Jonathon W. (1963). Italian Civil and Military Aircraft 1930–1945. USA: Aero Publishers Inc. pp. 260–261. ISBN 0-8168-6500-0.
  2. ^ Faurote, Fay Leone (1939). The Aircraft Year Book for 1939. New York City: Manufacturers Aircraft Association. p. 473.
  3. ^ Angelucci, Enzo (1982). World Encyclopedia of Civil Aircraft. New York: Crown Publishers, Inc. ISBN 0-517-54724-4.