1947


Bristol Type 171 Sycamore







Type 171 Sycamore
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.

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.


  Type 171 Sycamore News


Sycamore Historic Visit to Weston-super-Mare

Sycamore Historic Visit to Weston-super-Mare

14-Jun-18 - The world’s last flying Bristol 171 Sycamore flew to the Helicopter Museum at Weston-super-Mare, UK 60 years after it was built. Will be displayed until June 24 #museum


Specifications Type 171 Sycamore


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     Max: 4875
Rate/Climb (m/min)
blueprints


  Derivatives & Versions of Type 171 Sycamore


ModelYearHistory
Sycamore 1

1947
1947 Type 171 Sycamore first flew 27 Jul 1947 against spec E.20/45 with a Wasp engine. Two built.
Sycamore 2

1948
1948 A single Type 171 Mk.2 prototype, (against spec E.34/46) flew with a Leonides 71 engine. An improvement over the Mk.1 was the engine orientation ...
Sycamore 3

1950
1950
Sycamore 4

1953
1953 The Type 171 Mk.4 was built with 4 doors, featured a 520shp Alvis Leonides 71 engine, a higher main undercarriage and the pilot sat on the right ...
Sycamore Mk.52

1958
1958 The Sycamore Mk. 52 was an export version for West Germany, based on the Sycamore 4. Federal German Government placed an order for 50 Sycamore Mk ...
Following retirement from German military service, at least 4 were acquired by various agencies of government. The Feuerwehrflugdienst Niedersac ...

  List of Operators of Type 171 Sycamore


Years Model Org
1951/65 australia Royal Australian Air Force
1953/66 australia Fleet Air Arm (RAN)
1953/72 united kingdom Royal Air Force
1953/60 united kingdom British European Airways
1954/60 belgium Force Aérienne Belge
1957/69 germany Luftwaffe
1958/67 germany Marineflieger
1979/85 united kingdom Flambards Experience
1980-    united kingdom Newark (Notts & Lincs) Air Museum
2007-    united kingdom Boscombe Down Aviation Collection
2015-    Sycamore 4 united kingdom Aerospace Bristol



  Global Distribution of Type 171 Sycamore



2Sycamore 1
1Sycamore 2
19Sycamore 3
91Sycamore 4
50mk.52
4Type 171 Sycamore





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