page_title: Cierva C.17
section_title: Specifications
hierarchical_section_title: Cierva C.17 / Specifications
caption_attribution_description: English: Cierva C.17 3-View drawing from L'Air June 1,1929
context_page_description: The Cierva C.17 was a British experimental autogyro built by Cierva Autogiro Company in England in 1928, in association with Avro. It was an attempt to build upon the successful Cierva C.8 design using the smaller, more streamlined fuselage of an Avro Avian IIIA as a starting point. The type was found to be underpowered, and when the first attempt at fitting a more powerful engine still did not result in acceptable performance, the design was abandoned.
context_section_description: Data from Jane's all the World's Aircraft 1928, British Aircraft Directory
  General characteristics
  Crew: 1
  Capacity: 1
  Length: 28 ft 9 in (8.76 m)
  Wingspan: 19 ft 9 in (6.02 m) auxiliary wing
  Height: 11 ft 1 in (3.38 m) tail up
  Empty weight: 970 lb (440 kg)
  Gross weight: 1,455 lb (660 kg)
  Fuel capacity: 17 imp gal (20 US gal; 77 l)
  Powerplant: 1 × ADC Cirrus III 4-cylinder air-cooled in-line piston engine, 90 hp (67 kW)
  Main rotor diameter:  33 ft 3.25 in (10.1410 m)
  Main rotor area: 869 sq ft (80.7 m²)
  Propellers: 2-bladed Avro wooden fixed pitch airscrew
  Performance
  Maximum speed: 90 mph (140 km/h, 78 kn) 
  Minimum speed: 25 mph (22 kn; 40 km/h)
  Range: 210 mi (340 km, 180 nmi) at 70 mph (61 kn; 110 km/h)
  Endurance: 3 hours
  Rate of climb: 500 ft/min (2.5 m/s)
  Power/mass: 18.2 lb/hp (11.13 kg/kW)
caption: Cierva C.17 3-view drawing from L'Air June 1,1929
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