Sikorsky S-45

The Sikorsky S-45 was a proposed double-deck transoceanic flying boat originally designed in 1938 by Sikorsky Aircraft for Pan Am. The high wing monoplane featured a single-step hull with a triple-tail and was to be powered by six Wright R-3350 Duplex-Cyclone engines which were being developed at the time. The aircraft would have competed with the Boeing 314 but no examples of the S-45 were ever manufactured.[1][2][3]

S-45
Role Flying boat airliner
National origin United States
Manufacturer Sikorsky Aircraft

Specifications

Data from Global Security[1]

General characteristics

  • Capacity: 100 passengers
  • Length: 155.5 ft (47.4 m)
  • Wingspan: 236 ft (72 m)
  • Height: 25.75 ft (7.85 m)
  • Wing area: 4,670 sq ft (434 m2) [3]
  • Empty weight: 34,930 lb (15,844 kg)
  • Gross weight: 87,000 lb (39,463 kg)
  • Powerplant: 6 × Wright R-3350 Duplex-Cyclone Air-cooled 18-cylinder radial engines, 2,500 hp (1,900 kW) each [3]

Performance

  • Cruise speed: 200 mph (320 km/h, 170 kn)
  • Range: 5,000 mi (8,000 km, 4,300 nmi)
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References
  1. "Sikorsky S-45 Flying Boat". www.globalsecurity.org. 2017. Retrieved 19 May 2017.
  2. "The American Fixed Wing Era". www.sikorskyarchives.com. Sikorsky Archives. Retrieved 14 May 2017.
  3. Johnson, E.R. (2009). American Flying Boats and Amphibious Aircraft: An Illustrated History. Jefferson, North Carolina: McFarland & Company, Inc., Publishers. p. 340. ISBN 978-0-7864-3974-4.
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