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New England Air Museum, Windsor Locks Connecticut
Sikorsky R-4B 'Hoverfly' SN: 43-46503

Description
  Manufacturer:Sikorsky
  Base model:R-4
  Designation:R-4
  Version:B
  Nickname:Hoverfly
  Designation System:U.S. Air Force
  Designation Period:1941-1947
  Basic role:Rotary Wing (Helicopter)
  See Also:
  Serial/Bureau Number:43-46503
  Location:New England Air Museum, Windsor Locks Connecticut

Specifications
  Length: 33' 7" 10.2 m
  Height:12' 5" 3.7 m
  Wingspan: 38' 11.5 m
  Gross Weight: 2,579 lb 1,170 kg
  Max Weight: 2,581 lb 1,170 kg

Propulsion
  No. of Engines: 1
  Powerplant: Warner R-550
  Horsepower (each): 200

Performance
  Range: 130 miles 209 km
  Cruise Speed: 65 mph 104 km/h 56 kt
  Max Speed: 75 mph 120 km/h 64 kt
  Ceiling: 8,000 ft 2,438 m