Part I

Westland Helicopters Part II

1934: Cierva C-29 Five seat gyroplane produced for Cierva, a single prototype was built but never progressed beyond the ground running phase due to ground resonance for which no remedy could be found.
Cierva C-29

February 5,1935: Cierva CL-20 Two seat gyroplane built for Cierva and Le Pere. Development abandoned due to threat of WWII

Rotor diameter: 9.75 m
Length: 6.17 m
Weight: 636 kg
Power: 1 Pobjoy Niagra S (90 hp)
Cierva CL-20

Note: The above two projects were undertaken at a time when the Company's main activity was concerned with fixed wing aircraft. It does however indicate an early interest in rotorcraft within the Westland organisation.

Westland Heritage

January 10,1947: Westland signed a licence agreement with United Aircraft Corporation to manufacture the Sikorsky S-51. This event signalled Westland's move into the helicopter business.

October 5,1948: WS-51 Dragonfly Westland built version of the Sikorsky S-51
Rotor diameter: 14.63 m
Length: 17.54 m
Weight: 2004 kg - Max.2675
Power: 1 Alvis Leonides 50 (540 hp)
Range: 482 Km
Acommodation: Pilot plus 4
No.Built: 149
WS-51 Dragonfly

November 12,1952: WS-55 Whirlwind Westland built version of the Sikorsky S-55, used for Search and Rescue, Transport and Anti-submarine duties.

Rotor diameter: 16.15 m
Length: 18.94 m
Weight: 2415 kg - Max.3265
Power: 1 Pratt & Whitney Wasp R-1340-40(600hp) or One Wright Cyclone R-1300-3 (700hp)
Range: 483 Km
Acommodation: 2 pilots plus 10
No.Built: 289
WS-55 Whirlwind

August 23,1955: Widgeon A five seat general purpose helicopter involving major re-design of the WS-51, including cabin, metal rotor blades and re-engine.

Rotor diameter: 14.99 m
Length: 17.72 m
Weight: 1960 kg - Max.2676
Power: 1 Alvis Leonides 521/1 (520hp)
Range: 499 Km
Acommodation: Pilot plus 4
No.Built: 15

May 17,1957: WS-58 Wessex (HAS Mk1) A general purpose and anti-submarine helicopter, using the Sikorsky S-58 airframe and transmission, modified to accept a turboshaft engine.

Rotor diameter: 17.07 m
Length: 20.04 m
Weight: 3446 kg - Max.5715
Speed : Max. 212 Km/h
Power: 1 Napier Gazelle 161 (1450 hp)
Range: 1038 Km
Acommodation: Pilot plus 3 (ASW)
No.Built: 167
WS-58 Wessex

June 15,1958: Westminster A single rotor transport helicopter research vehicle, Wholly funded by Westland based on the Sikorsky S-56 rotor and transmission system.

Rotor diameter: 21.95 m
Length: 26.44 m
Weight: 9635 kg - Max.14965
Speed : 241 Km/h
Power: 2 Napier Eland E229A turboshaft engines (3,150hp)
Range: 241 Km
Acommodation: 2 pilots plus 45
No.Built: 2

February 28,1959: WS-55 Whirlwind (Series 3, HAR 9 & HAR 10) The installation of a single Rolls-Royce Gnome turboshaft engine into the Whirlwind airframe represented a considerable improvement, used primarily in the SAR role.

Rotor diameter: 16.15 m
Length: 18.94 m
Weight: 2486 kg - Max.3538
Speed : 175 Km/h
Power: 1 Rolls-Royce Gnome H-1000 turboshaft (1050 hp)
Range: 514 Km
Acommodation: 2 pilots plus 10
No.Built: 75
WS-55 Whirlwind

Continue with Westland Timeline Part III

User Contributed Notes

Add note to this page

Latest News

JBI Helicopters in the Farming of Cranberry Bogs

Aeromedical Tilt Rotor Seminar in Australia

Falcon Aviation Orders Three More H160

ASU Delivered NVG Capable AS350 to HNZ Topflight

EDIC’ Horizon International Flight Academy

400,000 Flight Hours for V-22 Osprey Fleet

Sikorsky S-92 Certified by Mexico DGAC

AAR to Enhance Support for the UAE Armed Forces




Promote Your Services Here

facebook     twitter     google     linkedin

Sponsored by
Viewpoint Saxon

Promote Here

Flying a helicopter
Helicopter stories
Jobs new
Future helicopters
For Sale


47196 serials
20065 photos
4006 heliports

facebook     twitter     google     linkedin