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Wiki Loves Monuments: Photograph a monument, help Wikipedia and win! Learn more Hawker Hart From Wikipedia, the free encyclopedia Jump to navigation Jump to search Hart Camm hart 500.jpg Hawker Hart G-ABMR 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

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.

Several major variants of the Hart were developed, including a navalised version for the Royal Navy's aircraft carriers. Beyond Britain, the Hart would be operated by a number of foreign nations, including Sweden, Yugoslavia, Estonia, South Africa, and Canada. Contents

1 Design and development 2 Operational history 3 Variants 3.1 Hart 3.2 Audax 3.3 Demon 3.4 Hardy 3.5 Hind 3.6 Osprey 4 Operators 4.1 Hawker Hart 4.2 Hawker Audax 4.3 Hawker Demon 4.4 Hawker Hardy 4.5 Hawker Hartebeest 4.6 Hawker Osprey 5 Surviving aircraft 6 Specifications Hart (Kestrel IB powered day bomber) 7 See also 8 References 8.1 Notes 8.2 Citations 8.3 Bibliography 9 External links

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.[1] 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.[2][3]

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.[4] Up to 520 pounds (240 kg) of bombs could be carried under the aircraft's wings.[5]

J9052, the prototype Hart, first flew in June 1928, being delivered to the Aeroplane and Armament Experimental Establishment at RAF Martlesham Heath on 8 September. It demonstrated good performance and handling, reaching 176 mph (283 km/h) in level flight and 282 miles per hour (454 km/h) in a vertical dive.[6][7] The competition culminated in the choice of the Hawker Hart in April 1929. The de Havilland Hound was rejected due to handling problems during landing and because of its part-wooden primary structure. While the Avro Antelope demonstrated similar performance and good handling, the Hart was preferred as it was far cheaper to maintain, a vital aspect to a programme during defence budget constraints that the British armed forces faced during the 1920s. The Fairey Fox IIM (which despite the name was a new aircraft), delayed by Fairey's late start on the design compared to the other competitors, only flew for the first time on 25 October 1929, long after the Hart had been selected.[6]

A total of 992 aircraft were built as Harts.[8][N 1] 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.[9]

The production Hart day bomber had a 525 hp (390 kW) Rolls-Royce Kestrel IB 12-cylinder V-type engine; a speed of 184 mph (296 km/h) and a range of 470 mi (757 km).[10] It was faster than most contemporary fighters, an astonishing achievement considering it was a light bomber. It also enjoyed excellent manoeuvrability, making the Hart one of the most effective biplane bombers ever produced for the Royal Air Force. In particular, it was faster than the Bristol Bulldog, which had recently entered service as the RAF's front line fighter. This disparity in performance led the RAF to gradually replace the Bulldog with the Hawker Fury.[11]

Demand was such that production was spread out among a wide selection of aircraft companies. Of the 962 built in the United Kingdom, Hawker produced 234, Armstrong Whitworth 456, Gloster 46, Vickers 226 and 42 were produced in Sweden under licence by ASJA who built 18, Götaverken who built three and the Central Workshops of the Air Force (CVM) who built 21.[12] 1004 Harts were produced.[12] Operational history

The Hart entered service with No. 33 Squadron RAF in February 1930, replacing the larger and slower Hawker Horsley. No. 12 Squadron replaced its Foxes with Harts in January 1931, with a further two British-based Hart light bomber squadrons forming during 1931.[13]

Harts were deployed to the Middle East during the Abyssinia Crisis of 1935–1936. The Hart saw extensive and successful service on the North-West Frontier, British India during the inter-war period. Four Hawker Harts from the Swedish Air Force saw action as dive bombers during the 1939–1940 Winter War as part of a Swedish volunteer squadron, designated F19, fighting on the Finnish side. Though obsolete compared to the United Kingdom's opposition at the start of the Second World War, the Hart continued in service, mainly performing in the communications and training roles until being declared obsolete in 1943.[14]

The Hart proved to be a successful export, seeing service with the Royal Egyptian Air Force, Royal Indian Air Force, South African Air Force, Estonian Air Force, Southern Rhodesia, Sweden (where it was designated B4) and the Kingdom of Yugoslavia. The Rhodesian Hardys saw service on the Allied side during the opening moves of the East African theatre of World War II.

Swedish Air Force General Björn Bjuggren wrote in his memoirs[15] how his squadron developed dive-bombing techniques in the mid-1930s for their B4s.[N 2] When the Hawker engineers found out, they issued a formal objection, saying that the aircraft had not been designed for that purpose. However, the Swedish pilots proved that the aircraft was up to the task and dispelled their concerns.[16] Variants Hart

Hart I   Two-seat light bomber aircraft for the RAF. 525 hp Kestrel IB engine.[17] Hart SEDB Two-seat single-engined light bomber aircraft for the RAF, powered by a 525 hp Rolls-Royce Kestrel IB, or a 510 hp Kestrel X (DR) piston engine.[18] Hart (India) Tropicalised version for the RAF, used by RAF in the North West Frontier of India, with larger radiator and extra equipment.[19] Hart (C) Two-seat unarmed communications aircraft for the RAF, a small number were used by No. 24 Squadron RAF; eight built.[20] Hart Trainer (Interim) Hart light bombers converted into training aircraft. Two built.[21] Hart Trainer Two-seat dual-control trainer aircraft, with reduced sweepback on top wings to compensate for movement in center of gravity caused by removal of military equipment.[22] Hart Fighter Two-seat fighter version for the RAF used by No. 23 Squadron RAF, with Kestrel IIS. Later redesignated as the Demon; six built.[23] Hart (Special) Tropicalised version for the RAF, used by the RAF in the Middle East. Based on Audax airframe with desert equipment, and de-rated Kestrel X engine.[24][25] Hart (Testbeds) Several Harts were used as engine testbeds, including G-ABMR and G-ABTN which were used to test several variants of Kestrel engines. K2434 was used by Napier to test the Napier Dagger I, II and III. K3036 was used by Rolls-Royce to test the Merlin C and E, complete with a ventral radiator.[26] Estonian Hart Export version for Estonia, equipped with an interchangeable wheel or float undercarriage; eight built.[27][28]

A preserved Hart of the Swedish Air Force, powered by a Bristol Pegasus radial engine, in Finnish Air Force markings (1976)

Swedish Hart Light bomber for Swedish Air Force. Four Hawker-built pattern aircraft, powered by a Bristol Pegasus IM2 radial piston engine were delivered in 1934. Following successful evaluation, 42 were built under licence in Sweden, powered by a Swedish-built NOHAB Pegasus IU2.[27][28]

Audax

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. The Audax was powered by a version of the Kestrel engine and had a maximum speed of 170 mph (274 km/h). A number of variants of the Audax were produced, including the Audax India, a tropicalised version of the Audax for service in India and the Audax Singapore for service there.[29] Audax prototype

The Audax saw service with other air forces, including the Royal Canadian Air Force, the Royal Indian Air Force, the South African Air Force, the Royal Egyptian Air Force, the Royal Iraqi Air Force, the Imperial Iranian Air Force, the Straits Settlements and the Southern Rhodesian Air Force. The Audax saw limited service during the Second World War, seeing service in Africa on the Kenya–Abyssinia border, the latter of which had been occupied by Italy. The Audax also saw service in Iraq, at RAF Habbaniya, west of Baghdad, after the uprising there, the Anglo-Iraqi War; influenced by Axis forces. The battle for RAF Habbaniya: In the days leading up to the battle for RAF Habbaniya crews [Squadron Leader Tony Dudgeon for example] began to upgrade the Audaxs stationed there, despite having received orders forbidding such actions. They fitted some of the Audaxs to carry 250 lb [113 kg] bombs instead of 20 lb (9 kg) bombs. The Audax ended its service by 1945. A derivative of the Audax, the Hawker Hartebeest, a light bomber, was built for the South African Air Force with modifications made from the Audax. Sixty-five of these aircraft were built, the majority in South Africa. The aircraft saw action in East Africa during clashes against Italy who occupied Abyssinia.[30] Audax of 26 Squadron in 1934

A.V. Roe built 287 Audaxes as part of the RAF expansion scheme during 1935–1937. These did not warrant an Avro type number but between 1937 and 1938, Avro built 24 modernised Audaxes for the Egyptian government, powered by 750 hp (560 kW) Armstrong Siddeley Panther VIA radials. Acknowledging the amount of redesign work done, these were designated the Avro Type 674.

Audax I

Two-seat army cooperation aircraft for the RAF, powered by a 530 hp (395 kW) Rolls-Royce Kestrel IB, or 580 hp Kestrel X piston engine.

Audax (India)

Tropicalised version for the RAF, used by the RAF in India.

Audax (Singapore)

Tropicalised version for the RAF, powered by a Rolls-Royce Kestrel V piston engine, used by the RAF in Singapore and British Malaya.

Canadian Audax

Modified version of the Audax I for the RCAF; one built for Canada.

Egyptian Audax

Six aircraft fitted with the 750 hp Armstrong Siddeley Panther radial piston engine, plus 18 aircraft fitted with the Panther X radial piston engine; 34 built for Egypt.

Iraqi Audax (Nisr)

24 aircraft fitted with the Bristol Pegasus IIM2 radial piston engine, plus ten aircraft fitted with the Pegasus VIP8 radial piston engine; 34 built for Iraq.[31]

Persian Audax

30 aircraft fitted with the Pratt & Whitney Hornet S2B radial piston engine, plus 26 aircraft fitted with the Bristol Pegasus IIM or IIM2 radial piston engine; 56 built for Persia.

Hartebeest

Hawker built pattern aircraft; four built and exported to South Africa.

Hartebeest I

Two-seat general-purpose, ground support aircraft for the South African Air Force, powered by a 608 hp (453 kW) Rolls-Royce Kestrel VFP piston engine; 65 aircraft built under licence in South Africa.

Demon Boulton Paul built Demon I of 64 Squadron in 1938

The Hawker Demon was a fighter variant of the Hart light bomber. During air defence exercises the RAF's Siskins and Bulldogs were often unable to intercept the new Hart bombers, which were sometimes instructed to restrict their height and speed in order to give the fighters a chance, which prompted the development of a fighter variant of the Hart.[32]

While the Hawker Fury offered better performance, lower production volumes made it more expensive and therefore it remained available only in small numbers, so when a fighter version of the Hart was suggested, the Air Ministry selected the type as an interim fighter until higher-performance fighters could be bought in larger numbers.[33] The new fighter variant added a second Vickers machine gun, while the coaming of the rear cockpit was angled to give a better field of fire, and a supercharged Kestrel IS engine was fitted. Evaluation of an initial batch of six aircraft, known as Hart Fighters by one flight of 23 Squadron during 1931 was successful, and larger orders followed for the fighter Hart, now known as the Hawker Demon.[34] The Demon's first flight was on 10 February 1933.

305 Hawker Demons were built, including 232 for the RAF.[35] The Demon was powered by varying versions of the Kestrel engine. It had an armament of a single rear .303 in (7.7 mm) Lewis Gun with two fixed .303 in (7.7 mm) Vickers machine guns in the nose. Many were fitted with a hydraulically-powered turret in the rear gunner's position, which had been tested on the Hawker Hart. Demons were also sold to the Royal Australian Air Force. It saw only second-line operations during the Second World War. Hawker Demons of No. 23 Squadron RAF

Production of the Demon was undertaken by Hawker and by Boulton Paul Aircraft at their Wolverhampton factory, where their last example of 106 to be completed was delivered to the RAF in December 1937.

Hart Two-Seat Fighter Two-seat fighter version of the Hart for the RAF. Later redesignated as the Hart Fighter. Demon I   Two-seat fighter aircraft for the RAF. Australian Demon I   Two-seat fighter aircraft for the RAAF, similar to RAF version but fitted with a 600 hp (447 kW) Rolls Royce Kestrel V engine; 54 built (the first 18 delivered as general-purpose fighters in 1935 and an additional 36 for army co-operation duties delivered in 1936). Australian Demon II   Two-seat training version for the RAAF, standard Demon fitted with dual controls and provision for target towing, 10 built Turret Demon Two-seat fighter version, fitted with a Frazer-Nash gun turret in the rear cockpit.

Hardy Hawker Hardy aircraft operating from RAF Ramleh airfield in the 1930s

The Hawker Hardy was a general-purpose variant of the Hawker Hart tropicalised to meet Air Ministry Specification G.23/33 as a Wapiti replacement in Iraq. The prototype was a production Hart which was modified with a modified radiator, a message pick-up hook, water containers and a desert survival kit. The prototype first flew on 7 September 1934, and the first production aircraft were delivered to 30 Squadron in January 1935. The Hardy saw some service during the Second World War, in Africa and the Middle East; the Hardys performing a number of operations against Italian-occupied Abyssinia as well as other areas of Africa. The Hardy also saw service with Southern Rhodesia. The last operational sortie by a Hardy was on 9 May 1941 and most of the survivors were scrapped, although some continued in service as communications aircraft. On 14 May 1941, the Belgian Colonial authorities obtained a Hawker Hardy from the South African Air Force. Painted in Belgian colours, the machine was used for observation missions, but unfortunately overturned while landing at Gambela airfield on 26 May 1941, effectively writing off the aircraft.

Hardy I   Two-seat general-purpose aircraft for the RAF, 47 built excluding one prototype modified from a Hart.

Hind Main article: Hawker Hind Hawker Hind, flying example in Shuttleworth Collection Hawker Hind (Afghan) flying at Old Warden

The Hawker Hind was a derivative of the Hart and was intended to replace it. The Hawker Hector was a variant of the Hind and was used in the army co-operation role. It saw only limited service during the Second World War with the Royal Air Force. Hectors were also sold to Ireland. Osprey A Hawker Osprey IV on the catapult of the cruiser HMS Enterprise in 1936 A Swedish Osprey ready to launch from the cruiser HSwMS Gotland

The Hawker Osprey was the navalised carrier-borne version of the Hart, performing in the fighter and reconnaissance roles. The Osprey had a single Rolls-Royce Kestrel II engine, and had a max speed of 168 mph (270 km/h). Its armament consisted of a single forward .303 in (7.7 mm) Vickers machine gun and one .303 in (7.7 mm) Lewis gun. The Osprey joined the Fleet Air Arm (FAA) in 1932, with 103 being built, and ended its career in 1944 after serving as a trainer for FAA pilots during the Second World War. By December 1936, Ospreys were being deployed by 701 Squadron based at RAF Kalafrana in the anti-submarine and anti-piracy role. The Osprey was also sold to the Swedish Air Force being used on the seaplane cruiser HSwMS Gotland, which carried six Ospreys. Ospreys were also sold to the Portuguese Naval Aviation and the Spanish Republican Air Force.

Osprey I   Two-seat fleet spotter and reconnaissance aircraft, powered by a 630 hp (470 kW) Rolls-Royce Kestrel IIMS inline piston engine; 37 built. Osprey II   Two-seat fleet spotter and reconnaissance aircraft, powered by a 630 hp (470 kW) Rolls-Royce Kestrel IIMS piston engine, equipped with redesigned floats; 14 built. Osprey III Two-seat fleet spotter and reconnaissance aircraft, powered by a 630 hp (470 kW) Rolls-Royce Kestrel IIMS piston engine, equipped with a dinghy stowed away in the starboard upper wing; 26 built. Osprey IV   Two-seat fleet spotter and reconnaissance aircraft, powered by a 640 hp Rolls-Royce Kestrel V.[36] Twenty-six built in 1935.[37] Portuguese Osprey Two aircraft equivalent to Osprey III built for Portugal and powered by Kestrel IIMS piston engine. Delivered in 1935. Six aircraft more in 1939.[37][38] Spanish Osprey One aircraft fitted with a Hispano-Suiza 12Xbrs engine; one built for the Spanish Republican Air Force. Swedish Osprey Version for Sweden fitted with a 600 horsepower (450 kW) Swedish-built NOHAB Bristol Mercury radial piston engine and interchangeable wheel and float landing gear. Six built. Given the designation S 9 by the Swedish Air Force.[38][39]

Operators Main article: Operators of Hawker Hart and variants Hart, Audax, Demon, and Osprey operators Hawker Aircraft's demonstrator Hart airworthy in 1954 painted in their dark blue house colours Hawker Hart

Afghanistan Canada Egypt Estonia British India Persia South Africa Southern Rhodesia Sweden United Kingdom Kingdom of Yugoslavia

Hawker Audax

British India Canada Egypt Iraq - No. 3 Squadron IqAF[40] Persia Southern Rhodesia Straits Settlements United Kingdom

Hawker Demon

Australia United Kingdom

Hawker Hardy

United Kingdom Southern Rhodesia Belgium (one aircraft, ex-RAF K4316) Belgian Congo

Hawker Hartebeest

South Africa

Hawker Osprey

Portugal Spanish Republic Sweden United Kingdom

Surviving aircraft Hawker Hart II G-ABMR, RAF Museum (2007) Demon I, Shuttleworth Collection

Australia

A1-8 – Demon I on static display at the RAAF Museum in Point Cook, Victoria. Delivered 1935, served with No. 3 Squadron RAAF until 1937 when it was wrecked in Tasmania and reduced to components. Restored 1987 by 2AD in Richmond, New South Wales.[41]

Sweden

714 – B 4 on static display at the Swedish Air Force Museum near Linköping, Östergötland.[42]

United Kingdom

G-ABMR – Hart II on static display at the Royal Air Force Museum London in London. The 13th off the production line, it first flew in 1931 but never saw military use. Under the civilian registration G-ABMR, it was used by Hawker in various roles, including testbed, demonstration aircraft and a camera aircraft. It flew throughout the Second World War and continued flying until 1971. Still airworthy, it was then transferred to the RAF Museum, on loan from Hawker Siddeley, Hawker Aircraft's successor company. It remains there, painted to represent RAF Hart serial number J9941.[43][44] K4972 – Hart Trainer on static display at the Royal Air Force Museum Cosford in Cosford, Shropshire. Built in 1935 by Armstrong Whitworth, it flew as a training aircraft before being used as an instructional airframe. In 1943, it passed on to the Air Training Corps unit at Nelson Tomlinson School, Wigton, where it remained until recovered in 1962 by a group of aviation enthusiasts. They passed it on to the RAF Museum in 1962.[45][46] K8203 – Demon airworthy at the Shuttleworth Collection in Old Warden, Bedfordshire.[47]

Specifications Hart (Kestrel IB powered day bomber)

Data from The British Bomber since 1914.[8]

General characteristics

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)    Wing area: 349.5 sq ft (32.47 m2) Airfoil: RAF 28[10] 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)

Performance

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[5]

See also

Related development

Hawker Hind

Related lists

List of aircraft of World War II   List of aircraft of the Spanish Republican Air Force

References Notes

This excludes the six Hart Fighters, later re-designated Demon, but includes the prototype Audax, Osprey, Demon and Hardy, which were converted Harts.[8]

Bjuggren claims that he got this idea from watching a Hollywood movie with dive bombers.

Citations

Lewis 1974, p. 146. Jarrett Aeroplane Monthly May 1995, p. 13. Taylor 1974, p. 196. Jarrett Aeroplane Monthly June 1995, pp. 30–32. Mason 1991, p. 170. Jarrett Aeroplane Monthly May 1995, p. 14. Mason 1994, p. 205. Mason 1994, p. 207. Lewis 1974, pp. 176, 233. Jarrett Aeroplane Monthly June 1995, p. 32. Lewis 1974, p. 176. "Hawker Hart." aeroflight.co. Retrieved: 4 December 2012. Thetford Aeroplane Monthly July 1995, p. 51. Lewis 1974, p. 233. Bjuggren, Björn (1965). Attack: minnen från trettiofem års flygtjänst (in Swedish). Stockholm: Norstedt. Lewis 1974, p. 224. Mason 1991, p. 488. Mason 1991, p. 492. Jarrett Aeroplane Monthly May 1995, p. 15. Mason 1991, pp. 490, 494. Mason 1991, p. 160. Mason 1991, p. 161. Mason 1991, p. 489. Wixey Air Enthusiast January/February 2002, pp. 57–58. Mason 1991, p. 159. Mason 1991, pp. 166–170. Mason 1991, p. 165. Wixey Air Enthusiast November/December 2001, pp. 28–29. "Hawker Audax and Hawker Hind." 211squadron.org. Retrieved: 13 July 2013. Arthur, Max. Lost Voices of the RAF. London: Hodder & Stoughton, 20055. ISBN 978-0-34083-813-6. "MOTORING". The West Australian. Perth: National Library of Australia. 8 November 1934. p. 7. Retrieved 16 August 2013. Thetford Aeroplane Monthly July 1995, p. 56. Mason 1992, p. 234. Mason 1991, p. 219. "Hawker Demon". www.historyofwar.org. Marriott 2010, p. 296. Mason 1991, p. 228. Wixley Air Enthusiast January/February 2002, p. 63. Layman and McLaughlin 1991, pp. 41–42. Pesach Malovany, "Wars of Modern Babylon", University Press of Kentucky, June 2017, ISBN 0813169437 / ISBN 978-0813169439, fn. 2, p.813. McGuiness, Paul; Crick, Darren; Cowan, Brendan (29 November 2017). "RAAF A1 Hawker Demon Mk.I & Mk.II". ADF Serials. Retrieved 24 November 2018. "B 4". Flygvapenmuseum (in Swedish). Retrieved 24 November 2018. "Hawker Hart II". Royal Air Force Museum. Retrieved 24 November 2018. Simpson, Andrew (2013). "INDIVIDUAL HISTORY [G-ABMR]" (PDF). Royal Air Force Museum. Retrieved 24 November 2018. "Hawker Hart Trainer". Royal Air Force Museum. Retrieved 24 November 2018. Simpson, Andrew (2012). "INDIVIDUAL HISTORY [K4972]" (PDF). Royal Air Force Museum. Retrieved 24 November 2018. "HAWKER DEMON". Shuttleworth. Retrieved 24 November 2018.

"Hawker Hart". Air Transport Auxiliary Ferry Pilots Notes. (reproduction). Elvington, York, UK: Yorkshire Air Museum, 1996. ISBN 0-9512379-8-5.

Bibliography

Crawford, Alex. Hawker Hart Family. Redbourn, Hertfordshire, UK: Mushroom Model Publications Ltd., 2008. ISBN 83-89450-62-3. Goulding, James and Robert Jones. Gladiator, Gauntlet, Fury, Demon (Camouflage & Markings 5: RAF Fighter Command Northern Europe, 1936 to 1945). London: Ducimus Books Ltd., 1971. OCLC 872045486 Hannah, Donald. Hawker FlyPast Reference Library. Stamford, Lincolnshire, UK: Key Publishing Ltd., 1982. ISBN 0-946219-01-X. James, Derek N. Hawker: An Aircraft Album No. 5. New York: Arco Publishing Company, 1973. ISBN 0-668-02699-5 (first published in the UK by Ian Allan in 1972). Jarrett, Philip. "By Day and by Night: Hawker Harts and Hinds: Part One". Aeroplane Monthly, May 1995, Vol. 23 No. 5, Issue No 265, pp. 12–18. London: IPC. ISSN 0143-7240. Jarrett, Philip. "By Day and by Night: Hawker Harts and Hinds: Part Two". Aeroplane Monthly, June 1995, Vol. 23 No. 6, Issue No 266, pp. 28–33. London: IPC. ISSN 0143-7240. Layman, R. D. and Stephen McLaughlin. The Hybrid Warship: The Amalgamation of Big Guns and Aircraft. London: Conway Maritime Press, 1991. ISBN 0-85177-555-1. Lewis, Peter. The British Bomber since 1914 Sixty Years of Design and Development. London: Putnam, 1974. ISBN 0-370-10040-9. Marriott, L. Battleships. Sywell, Northamptonshire, UK: Igloo Books, 2010. ISBN 978-0-85734-421-2. Mason, Francis K. The British Bomber Since 1914. London: Putnam Aeronautical Books, 1994. ISBN 0-85177-861-5. Mason, Francis K. The British Fighter since 1912. Annapolis, Maryland, USA:Naval Institute Press, 1992. ISBN 1-55750-082-7. Mason, Francis K. Hawker Aircraft since 1920. London: Putnam Aeronautical Books, 1991. ISBN 0-85177-839-9. Mason, Francis K. The Hawker Audax & Hardy (Aircraft in Profile 140). Leatherhead, Surrey, UK: Profile Publications, 1966. OCLC 45091982 Rimell, Raymond Laurence. The Hart Family: Hawker Hart and Derivatives (Aeroguide Classics Number 5). Chipping Ongar, Essex, UK: Linewrights Ltd., 1989. ISBN 0-946958-34-3. Taylor, H. A. Fairey Aircraft since 1915. London: Putnam, 1974. ISBN 0-370-00065-X. Thetford, Owen. "By Day and by Night: Hawker Hart and Hind": Operational History Part One. Aeroplane Monthly, July 1995, Vol. 24 No. 1, Issue No 267, pp. 50–57. London: IPC. ISSN 0143-7240. Wixey, Ken. "Hart of the Matter: Part One – Hawker's Hart 'Family': The Hart Bomber and the Army Co-Op Audax". Air Enthusiast, No 96, November/December 2001, pp. 24–33. Stamford UK:Key Publishing. ISSN 0143-5450 Wixey, Ken. "Hart of the Matter: Part Two- Hawker's Hart 'Family': Demon, Hart Special, Trainer, Osprey, Hardy". Air Enthusiast, No 97, January/February 2002, pp. 54–65. Stamford UK:Key Publishing. ISSN 0143-5450

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