Cierva C.17
British experimental autogyro rotorcraft
title: "Cierva C.17" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["1920s-british-experimental-aircraft", "single-engined-tractor-autogyros", "aircraft-first-flown-in-1928", "cierva-aircraft"] description: "British experimental autogyro rotorcraft" topic_path: "geography/united-kingdom" source: "https://en.wikipedia.org/wiki/Cierva_C.17" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary British experimental autogyro rotorcraft ::
::data[format=table title="Infobox aircraft"]
| Field | Value |
|---|---|
| name | C.17 |
| image | Cierva C.17 L'Aéronautique December,1928.jpg |
| type | Experimental autogyro |
| national_origin | United Kingdom |
| manufacturer | Cierva |
| designer | Juan de la Cierva |
| first_flight | 23 October 1928 |
| number_built | 2 |
| :: |
| name = C.17 | image = Cierva C.17 L'Aéronautique December,1928.jpg | caption = | type = Experimental autogyro | national_origin = United Kingdom | manufacturer = Cierva | designer = Juan de la Cierva | first_flight = 23 October 1928 | introduction = | retired = | status = | primary_user = | more_users = | produced = | number_built = 2 | variants =
The Cierva C.17 was a British experimental autogyro built by Cierva Autogiro Company in England in 1928, in association with Avro (which designated it their Type 612). 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.{{cite book | last = Taylor | first = Michael J. H. | title = Jane's Encyclopedia of Aviation | year = 1989 | publisher = Studio Editions | location = London | pages = 254
Variants
;C.17: Powered by a 67 kW (90 hp) A.D.C. Cirrus III piston engine.{{cite book | title = World Aircraft Information Files | publisher = Bright Star Publishing | location = London | pages = File 891 Sheet 29 ;C.17 Mk II: Powered by an Avro Alpha radial piston engine.
Specifications
::figure[src="https://upload.wikimedia.org/wikipedia/commons/b/bf/Cierva_C.17_3-View_L'Air_June_1,1929.png" caption="Cierva C.17 3-view drawing from L'Air June 1, 1929"] ::
|ref=Jane's all the World's Aircraft 1928, British Aircraft Directory |prime units?=imp General characteristics
|crew=1 |capacity=1 |length ft=28 |length in=9 |span ft=19 |span in=9 |span note=auxiliary wing |height ft=11 |height in=1 |height note=tail up |wing area sqm= |wing area sqft= |wing area note= |aspect ratio= |airfoil= |empty weight lb=970 |gross weight lb=1455 |max takeoff weight kg= |max takeoff weight lb= |max takeoff weight note= |fuel capacity=17 impgal |more general= Powerplant
|eng1 number=1 |eng1 name=ADC Cirrus III |eng1 type=4-cylinder air-cooled in-line piston engine |eng1 hp=90
|prop blade number=2 |prop name=Avro wooden fixed pitch airscrew |prop dia m= |prop dia ft= |prop dia in= |prop dia note=
|rot number=1 |rot dia ft=33 |rot dia in=3.25 |rot area sqft=869 |rot area note= Performance
|max speed mph=90 |max speed note=
- Minimum speed: 25 mph |cruise speed kmh= |cruise speed mph= |cruise speed kts= |cruise speed note= |never exceed speed kmh= |never exceed speed mph= |never exceed speed kts= |never exceed speed note= |range miles=210 |range note= at 70 mph |ferry range km= |ferry range miles= |ferry range nmi= |ferry range note= |endurance=3 hours |ceiling m= |ceiling ft= |ceiling note= |climb rate ftmin=500 |time to altitude= |wing loading kg/m2= |wing loading lb/sqft= |wing loading note= |fuel consumption kg/km= |fuel consumption lb/mi= |power/mass=18.2 lb/hp (11.13 kg/kW) |thrust/weight=
|more performance=
References
References
- (1928). "Jane's all the World's Aircraft 1928". Sampson Low, Marston & company, ltd.
- (10 February 2007). "C.17".
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::