Specifications

WESTLAND WS.59 WESTMINSTER

DESCRIPTION

Twin-engine single main-rotor transport or heavy lift helicopter with an all-metal unclad structure, later with a plastic skin. Two aircraft built by Westland Aircraft Limited, Yeovil during 1956-1958

PROTOTYPE

HELICOPTER 2

PRODUCTION

Design Ref:

WG.6

WG.7

Registration

G-APLE

G-APTX

Construction No

WA.1

WA.2

Registered

27 Feb 1958

5 May 1959

Engines

2 x Napier Eland E.229 Turboshaft

2 x Napier Eland E.229A Turboshaft

2 x Napier Eland E.211 Turboshaft

Capacity

2,920 shp each

3,150 shp each

3,500 shp each

DIMENSIONS

Main Rotor Diameter

72 ft 0 in

(21.95 m)

72 ft 0 in

(21.95 m)

Anti-Torque Rotor Diameter

15 ft 0 in

(4.57 m)

15 ft 0 in

(4.57 m)

Length

86 ft 9 in

89 ft 4 in

(27.4 m)

Height

21 ft 1 in

19ft 6 in

(5.94 m)

Main Rotor Disc Area

4,071 sq ft

(378.24 sq m)

4,069 sq ft

(378.24 sq m)

Anti-Torque Rotor

169 sq ft

(15.7 sq m)

169 sq ft

(15.7 sq m)

Track

19 ft 9 in

(6.05 m)

19 ft 9 in

(6.05 m)

Wheelbase

35 ft 7 in

(10.85 m)

35 ft 7 in

(10.85 m)

WEIGHTS

Empty

21,245 lb

22,300 lb

(10,125 kg)

Loaded

33,000 lb

(14,980 kg)

36,000 lb

(16,345 kg)

Payload

13,700 lb

(6,220 kg)

13,700 lb

(6,220 kg)

Fuel Load (In 2 Tanks)

500 Imp gallons

(1,1375 litres)

PERFORMANCE

Maximum Speed

155 mph

Cruise Speed

115 mph

(184 km/h)

150 mph

Rate Of Climb At Sea Level

1,750 ft per minute

1,900 ft per minute

(570 m per minute)

2,000 ft per minute

Hovering Ceiling

9,000 ft

(2,750 m)

9,000 ft

(2,750 m)

Normal Range

207 miles

(332 km)

120 miles

Ferry Range

1,150 miles

(1,850 km)

Accommodation

2 flight deck crew plus one observer

2 flight deck crew plus two observers

2 flight deck crew plus 50 passengers