Westland Whirlwind (helicopter) - Specifications (Whirlwind HAS.7)

Specifications (Whirlwind HAS.7)

Data from Westland Aircraft since 1915

General characteristics

• Crew: Two pilots
• Length: 41 ft 8½ in (12.72 m)
• Rotor diameter: 53 ft 0 in (16.15 m)
• Height: 15 ft 7½ in (4.76 m)
• Disc area: 2,205 ft² (205 m²)
• Empty weight: 5,993 lb (2,724 kg)
• Max. takeoff weight: 7,800 lb (3,538 kg)
• Powerplant: 1 × Alvis Leonides Major 755 14-cylinder two-row radial, 750 hp (559 kW)

Performance

• Maximum speed: 109 mph (95 knots, 175 km/h)
• Range: 334 miles (290 NM, 534 km)
• Service ceiling: 13,000 ft (3,960 m)
• Rate of climb: 910 ft/min (4.6 m/s)
• Disc loading: 3.5 lb/ft² (17.3 kg/m²)
• Power/mass: 0.01 hp/lb (0.16 kW/kg)

Armament

• 1x Mark 30 or Mark 44 torpedo or Depth charges (carried in place of dipping sonar)