Westland Dragonfly - Variants

Variants

Westland/Sikorsky WS-51

Prototype.

Dragonfly HR.1

Air-sea search and rescue helicopter for the Royal Navy powered by a 540 hp (400 kW) Alvis 50 radial piston engine. Thirteen built, some modified later as HR.5s.

Dragonfly HC.2

Casualty evacuation helicopter for the Royal Air Force similar to the commercial Mark 1A, three built.

Dragonfly HR.3

Air-sea search and rescue helicopter for the Royal Navy. Similar to the Dragonfly HR.1, but fitted with all-metal rotor blades, 58 built some later modified as HR.5s.

Dragonfly HC.4

Casualty evacuation helicopter for the RAF similar to the Dragonfly HR.3 with all-metal rotor blades, 12 built.

Dragonfly HR.5

Air-sea search and rescue helicopter for the Royal Navy similar to the Dragonfly HR.3. Modified from HR.1 and HR.3.

Westland-Sikorsky WS-51 Mk.1A

Civil transport helicopter powered by a 520 hp (388 kW) Alvis Leonides 521/1 radial piston engine. Built by Westland in the United Kingdom.

Westland-Sikorsky WS-51 Mk.1B

Civil transport helicopter powered by a 450 hp (336 kW) Pratt & Whitney R-985 Wasp Junior B4 radial piston engine.