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Juan de la Cierva C4 helicopter

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Specifications Comment this helicopter
Picture C4
General
Manufacturer Juan de la Cierva
Type C4
Introduced 1/9/1923
In production? No
Units produced 1
Price US $ 0.00
Dimensions
Overall Length 0 ft
Length 0 ft
Height 0 ft
Width 0 ft
   
   
Description With his model, C4, De la Cierva built the first autogiro aircraft that could actually make a controlled flight. By using flapping hinges, he resolved the problem of asymetric aerodynamic load caused by the speed difference between forward and retreating blades in forward flight. Although this idea had been proposed earlier, De la Cierva is credited with the first realisation of flapping hinges in a rotor system. The autogiro is not a helicopter; however, the use of flapping hinges in the C4 had a significant influence on their development.
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Design features
  • Conventional aeroplane fuselage with stub wings
  • Rotorhead with flapping hinges
  • No cyclic control
  • Rotor head slightly offset
Description
With his model, C4, De la Cierva built the first autogiro aircraft that could actually make a controlled flight. By using flapping hinges, he resolved the problem of asymetric aerodynamic load caused by the speed difference between forward and retreating blades in forward flight. Although this idea had been proposed earlier, De la Cierva is credited with the first realisation of flapping hinges in a rotor system. The autogiro is not a helicopter; however, the use of flapping hinges in the C4 had a significant influence on their development.
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Design features:
  • Conventional aeroplane fuselage with stub wings
  • Rotorhead with flapping hinges
  • No cyclic control
  • Rotor head slightly offset
Performance
Persons 1
Max. Range 0 mi
Cruise Speed 37 mph
Max. Speed 0 mph
Max. rate of Climb 0 ft/min
HOGE ceiling 0 ft
Service Ceiling 0 ft
Gross Weight 0 lb
Empty Weigt 0 lb
Useful Load 0 lb
Dynamic system
Fuel Capacity 0 gallons
Number of Engines 1
Engine Type Piston
Engine Code Le Rhone
Horse Power 110
Rotorhead Flap hinges
Number of rotorblades 4
Rotor Diameter 32.2 ft
Number of tail rotorblades 0
Tailrotor Diameter 0 ft
Blueprints & model
Manufacturer Website manufacturer..
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