Hawker  Aircraft

Hawker Hart was a British two-seater biplane light bomber aircraft of the Royal Air Force (RAF).

 

Hawker Hart Kestrell powered 1B

Design and development

 

In 1926, the Air Ministry stated a requirement for a two-seat high-performance light day-bomber, to be of all-metal construction and with a maximum speed of 160 mph (258 km/h). Designs were tendered by Hawker, Avro and de Havilland. Fairey, who had sold a squadron's worth of its wooden Fox bomber in 1925, was not at first invited to tender to the specification, and was sent a copy of the specification only after protesting to the Chief of the Air Staff, Hugh Trenchard.

 

Hawker's design was a single-bay biplane powered by a Rolls-Royce F.XI water-cooled V12 engine (the engine that later became known as the Rolls-Royce Kestrel). It had, as the specification required, a metal structure, with a fuselage structure of steel-tube covered by aluminium panels and fabric, with the wings having steel spars and duralumin ribs, covered in fabric. The crew of two sat in individual tandem cockpits, with the pilot sitting under the wing trailing edge, and operating a single .303 in (7.7 mm) Vickers machine gun mounted on the port side of the cockpit. The observer sat behind the pilot, and was armed with a single Lewis gun on a ring mount, while for bomb-aiming, he lay prone under the pilot's seat. Up to 520 pounds (240 kg) of bombs could be carried under the aircraft's wings.

 

A total of 992 aircraft were built as Harts. It became the most widely used light bomber of its time and the design would prove to be a successful one with a number of derivatives, including the Hawker Hind and Hector. There were a number of Hart variants, though only slight alterations were made to the design. The Hart India was a tropical version, the Hart Special was a tropical Hawker Audax, a Hart variant with desert equipment; a specialised Hart Trainer was also built which dispensed with the gunner's ring. Vickers built 114 of the latter model at Weybridge between 1931 and June 1936

 

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Hawker
Hawker Hart (Kestrel IB)

The Hawker Audax was a Hart variant, designed for army cooperation, seeing much service in the British Empire. The first Audax flew in late 1931 and over 700 Audaxes were produced (including export). The Audax was similar to the Hart, though had some modifications, including a hook to pick up messages. The Audax was armed with a single .303 in (7.7 mm) Lewis light machine gun and a .303 in (7.7 mm) Vickers machine gun.

  • History

    Role Light bomber

    Manufacturer Hawker Aircraft Limited

    Designer Sydney Camm

    First flight June 1928

    Introduction 1930

    Retired 1943

    Primary user Royal Air Force / Variants Hawker Hind / Hawker Hector

  • Primary Users

    Crew: 2

    Length: 29 ft 4 in (8.94 m)

    Wingspan: 37 ft 3 in (11.35 m)

    Height: 10 ft 5 in (3.18 m)

    Empty weight: 2,530 lb (1,148 kg)

    Max takeoff weight: 4,596 lb (2,085 kg)

    Fuel capacity: 83 imp gal (100 US gal; 380 L)[5]

    Powerplant: 1 × Rolls-Royce Kestrel IB water-cooled V12 engine, 525 hp (391 kW)

  • General Info

    Maximum speed: 185 mph (298 km/h, 161 kn) at 13,000 ft (4,000 m)

    Stall speed: 45 mph (72 km/h, 39 kn) [48]

    Range: 430 mi (690 km, 370 nmi)

    Service ceiling: 22,800 ft (6,900 m)

    Time to altitude: 8 min 30 s to 10,000 ft (3,000 m)

    Armament

    Guns: 1 × synchronised forward firing .303 in (7.7 mm) Vickers machine gun, 1 × .303 in (7.7 mm) Lewis Gun on Scarff ring in rear cockpit.

    Bombs: Up to 520 lb (240 kg) bombs under wings

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The Hawker Hart was a British two-seater biplane light bomber aircraft of the Royal Air Force (RAF). It was designed during the 1920s by Sydney Camm and manufactured by Hawker Aircraft. The Hart was a prominent British aircraft in the inter-war period, but was obsolete and already side-lined for newer monoplane aircraft designs by the start of the Second World War, playing only minor roles in the conflict before being retired.

Hawker Hart

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Hawker Hart was a British two-seater biplane light bomber aircraft of the Royal Air Force (RAF).

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