Sikorsky S-4

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S-4
Sikorsky S-4 aircraft circa 1911.jpg
S-4 displayed at an exhibition in Kharkov in the spring of 1911
Role Experimental
National origin Russian
Designer Igor Sikorsky
Introduction 1911
Number built 1
Developed from Sikorsky S-3

The Sikorsky S-4 was a Russian aircraft built by Igor Sikorsky using many components of the S-3 including the 40 hp (30 kW) Anzani three-cylinder engine. Construction of the biplane began in late December 1910 and was completed early in the spring of 1911. The machine was never flown but did appear in a static display at an aeronautical exhibition at Kharkov in the spring of 1911. Sometime afterward it was disassembled.[1][2]

Specifications[edit]

Data from Russian Aviation Museum[3]

General characteristics

  • Crew: One
  • Length: 26 ft 3 in (8 m)
  • Upper wingspan: 29 ft 6 in (9 m)
  • Wing area: 300 sq ft (28 m2)
  • Empty weight: 573 lb (260 kg)
  • Gross weight: 794 lb (360 kg)
  • Powerplant: 1 × Anzani 3 -cylinder air-cooled fan piston engine, 40 hp (30 kW)

Performance

References[edit]

  1. ^ Sikorsky, Igor (1944). The Story of the Winged-S. New York: Dodd, Mead & Company. p. 43. ISBN 9781258163556.
  2. ^ "Sikorsky S-4 1911". www.aviastar.org. Retrieved 5 April 2017.
  3. ^ "S-4". ram-home.com. 4 September 1997. Retrieved 4 April 2017.