Westland dragonfly

Derived from Sikorsky S-51 / R-5 / H-5
1948







Model



dragonfly
In December 1946, Westland Aircraft signed an agreement to build under licence the world's first successful operational helicopter, the US Sikorsky S-51 general utility model. This became the first production helicopter in Britain and the first helicopter in the UK to achieve an airworthiness certificate. Named the Dragonfly, the first British-built WS51 flew on 5 October 1948. Westland produced two piston engined original versions, the Series 1A with a British 500hp Alvis Leonides 521/1 and the Series 1B with a US 450hp Pratt & Whitney R-985-B4 Wasp Junior. Westland produced about 150 Dragonflys. Of these, 71 went to the Royal Navy, a further 16 went to the Royal Air Force to form the first frontline helicopter squadron in the service. Westland also produced the Dragonfly for civilian customers and in small numbers for the militaries of Ceylon (now Sri Lanka), Egypt, France, Iraq, Italy, Japan and Yugoslavia. A further private development programme produced the Westland Widgeon, based heavily on the Dragonfly.




Derivatives & Versions


ModelYearHistory
Dragonfly 1A 1950 Civil transport helicopter powered by a 520 hp (388 kW) Alvis Leonides 521/1 radial piston engine.
Dragonfly HC.2 1950 3 Dragonfly HC.2 were initially ordered by the RAF and all were delivered in Mar 1950. These were based on the Navy Dragonfly HR.1 with composite ...
Dragonfly HR.1 1950
Dragonfly HR.3 1950
Dragonfly 1B 1951 Civil transport helicopter powered by a 450 hp (336 kW) Pratt & Whitney R-985 Wasp Junior B4 radial piston engine with metal rotor blades.
Dragonfly HC.4 1952 The prototype Dragonfly HC.4 (WT845) for the RAF was based on the Navy Dragonfly HR.3 (with all metal main rotors) and included lessons learned f ...
Dragonfly HR.5 1953
Widgeon 1955 Developed from the Westland WS-51 Dragonfly HR.5 as a private venture. A 3 seat general utility helicopter, powered by an Alvis Leonides 521 ...

List of Operators of Westland dragonfly


From Organisation with model dragonfly
1950
thailand Royal Thai Air Force
    Dragonfly 1A 3 1950/54
united kingdom Fleet Air Arm
    71 1950/67
united kingdom Royal Air Force
    Dragonfly HC.2 4 1950/54
1952
france Armée de l'Air
    9 1952/59
united kingdom Royal Air Force
    Dragonfly HC.4 12 1952/58
1953
italy Aeronautica Militare Italiana
    Dragonfly 1A 3 1953/??
united kingdom Royal Air Force
    16 1953/58
1954
yugoslavia Ratno Vazdhuhoplovstvo i Protiv Vazdusna
    10 1954/92
Construction Numbers on database of dragonfly or its versions

23dragonfly
15Dragonfly 1A
3hc.2
10hc.4
7hr.1
27hr.3






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