From Wikipedia, the free encyclopedia
The Savoia-Marchetti S.74 was a four-engine
airliner developed by
Savoia-Marchetti for
Ala Littoria .
Design and development
The
prototype first flew on 16 November 1934. Only three were ever built.
[1]
Operational history
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
Civil operators
Kingdom of Italy
Military operators
Kingdom of Italy
Specifications (S.74)
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+ 1 ⁄2 in)
Wingspan: 30.00 m (98 ft 5 in)
Height: 5.50 m (18 ft 0+ 1 ⁄2 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
Aircraft of comparable role, configuration, and era
References
^
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 .
^ Faurote, Fay Leone (1939). The Aircraft Year Book for 1939 . New York City: Manufacturers Aircraft Association. p. 473.
^ Angelucci, Enzo (1982).
World Encyclopedia of Civil Aircraft . New York: Crown Publishers, Inc.
ISBN
0-517-54724-4 .
SIAI Marchetti Savoia-Marchetti SIAI-Marchetti