Bristol Type 171 Sycamore
1947
Type 171 Sycamore first flew 27 Jul 1947 against spec E.20/45 with a Wasp engine. A Mk.2 prototype (against spec E.34/46) flew with a Leonides 71 engine. In all, 178 built in 13 marks, 65 as HR.14 and 50 as the Mk.52 for export. The factory at Filton produced 95 and 83 were built at Oldmixon, W-s-M.
British Army used HC.10 and HC.11, RAF used HR.12, HR.13 and HR.14. RAN used HR.50 and HR.51. The Luftwaffe took delivery of the Mk.52.
British Army used HC.10 and HC.11, RAF used HR.12, HR.13 and HR.14. RAN used HR.50 and HR.51. The Luftwaffe took delivery of the Mk.52.
Specifications
| Engine | 1 x Alvis Leonides Mk.71 550 shp |
|---|---|
| Capacity | 1 + 4 |
| Length (m) | 18.62 |
| Height (m) | 4.23 |
| Blades | 3 |
| Rotor diam. (m) | 14.8 |
| Disc area (m2) | 172.1 |
| Weight (kgs) | Empty: 1730 Max: 2450 |
| Speed (km/h) | Max: 212 |
| Range (km) | 431 |
| Ceiling (m) | 4725 |
Derivatives & Versions
| Sycamore 1 | 1947 | Type 171 Sycamore first flew 27 Jul 1947 against spec E. |
| Sycamore 2 | 1948 | A single Type 171 Mk. |
| Sycamore 3 | 1950 | |
| Sycamore 4 | 1953 | The Type 171 Mk. |
| Sycamore Mk.52 | 1958 | The Sycamore Mk. |
Operators
| 1951-1965 |  Royal Australian Air Force |
| 1953-1966 | Fleet Air Arm (RAN) |
| 1953-1960 |  British European Airways |
| 1953-1972 | Royal Air Force |
| 1954-1960 |  Force Aérienne Belge / Luchtmacht |
| 1957-1969 |  Luftwaffe |
| 1958-1967 | Marineflieger |
| 1979-1985 | Flambards Experience |
| 1980- | Newark (Notts & Lincs) Air Museum |
| 2007- | Boscombe Down Aviation Collection |