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  • Westland Whirlwind Heavy Fighter / Fighter-Bomber Aircraft


    Impressive when it appeared in the late 1930s, the Westland Whirlwind was all but outmoded by 1943 and primarily doomed by its choice of engine.

     Updated: 6/19/2017; Authored By Staff Writer; Content ¬©www.MilitaryFactory.com


    The Westland Whirlwind became a capable twin-engined, heavy fighter design that might have seen even better service numbers were it not for its selection of Rolls-Royce Peregrine engines. Originally slated to utilize the Rolls-Royce Merlin, the Whirlwind platform was instead relegated to using the underpowered Peregrine for nearly all Merlin stocks were directed to Supermarine Spitfire and Hawker Hurricane fighter production. As a result, the Whirlwind would break into military aviation with much promise but become an obsolete design as soon as June 1944 - replaced by the more capable Hawker Typhoon types in service. Total production of Whirlwinds netted just 116 units.

    The Whirlwind was given an identifiable design with two underslung engine nacelles mounted under low-wing monoplane assemblies. While this elevated cockpit viewing for improved situational awareness, the pilot's vision was still obstructed by the wings and engine housings while also seated aft of a long nose assembly. The fuselage was tubular in its general shape with the tail unit of a T-style arrangement fitting a pair of horizontal planes to either side of a single rudder. Space in the nose section was reserved for a battery of 4 x 20mm cannons. The undercarriage continued the accepted "tail-dragger" three-point form featuring two main landing gear legs and a tail wheel. All were retractable into the airframe.


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    Westland Whirlwind Mk I Technical Specifications


    Service Year: 1940
    Type: Heavy Fighter / Fighter-Bomber Aircraft
    National Origin: United Kingdom
    Manufacturer(s): Westland Aircraft Limited - UK
    Production Total: 116



    Structural (Crew Space, Dimensions and Weights)


    Operating Crew: 1
    Length: 32.74 feet (9.98 meters)
    Width: 45.01 feet (13.72 meters)
    Height: 11.55 feet (3.52 meters)

    Weight (Empty): 7,840 lb (3,556 kg)
    Weight (MTOW): 10,269 lb (4,658 kg)

    Installed Power and Standard Day Performance


    Engine(s): 2 x Rolls-Royce Peregrine liquid-cooled piston engines developing 885 horsepower each.

    Maximum Speed: 360 mph (580 kph; 313 knots)
    Maximum Range: 802 miles (1,290 km)
    Service Ceiling: 30,000 feet (9,144 meters; 5.68 miles)
    Rate-of-Climb: 3,000 feet-per-minute (914 m/min)

    Armament / Mission Payload


    STANDARD (Mk I):
    4 x 20mm Hispano cannons in nose

    STANDARD (Mk II):
    4 x 20mm Hispano cannons in nose
    2 x 250lb or 500lb conventional drop bombs under the wings.

    Global Operators / Customers


    United Kingdom

    Model Variants (Including Prototypes)


    Mk I - Base Fighter Designation; fitted with 2 x Rolls-Royce Peregrine liquid-cooled piston engines delivering 885hp each.

    Mk II - Fighter-Bomber Variant; fitted with 2 x Rolls-Royce Peregrine 12-cylinder V-type engines delivering 765hp each; up to 1,000lbs of bombs.