Gloster Gladiator
The Gloster Gladiator is a British-built biplane fighter. It was used by the Royal Air Force (RAF) and the Fleet Air Arm (FAA) (as the Sea Gladiator variant) and was exported to a number of other air forces during the late 1930s.
Developed privately as the Gloster SS.37, it was the RAF's last biplane fighter aircraft, and was rendered obsolete by newer monoplane designs even as it was being introduced. Though often pitted against more formidable foes during the early days of the Second World War, it acquitted itself reasonably well in combat.
The Gladiator saw action in almost all theatres during the Second World War, with a large number of air forces, some of them on the Axis side. The RAF used it in France, Norway, Greece, the defence of Malta, the Middle East, and the brief Anglo-Iraqi War (during which the Royal Iraqi Air Force was similarly equipped). Other countries deploying the Gladiator included China against Japan, beginning in 1938; Finland (along with Swedish volunteers) against the Soviet Union in the Winter War and the Continuation War; Sweden as a neutral noncombatant (although Swedish volunteers fought for Finland against USSR as stated above); and Norway, Belgium, and Greece resisting Axis invasion of their respective lands.
South African pilot Marmaduke "Pat" Pattle was the top Gladiator ace with 15 victories with the type.[1][2]
During the 1920s, Britain's air defences had been based around interceptor aircraft capable of flying only for short ranges and at speeds of 150 to 200 miles per hour (240 to 320 km/h), but by 1930, figures within the Air Ministry were keen to supersede these aircraft. In particular, some dissatisfaction had arisen with the level of reliability experienced with the 'one pilot, two machine guns' design formula previously used; the guns were often prone to jams and being unreliable.[3] The Air Ministry's technical planning committee formulated Specification F.7/30, which sought a new aircraft capable of a maximum speed of at least 250 mph (400 km/h), an armament of no fewer than four machine guns, and such handling that that same fighter could be used by both day and night squadrons.[3] Gloster, being already engaged with development of the Gloster Gauntlet, did not initially respond to the specification, which later proved to be beneficial.[4]
The specification had also encouraged the use of the new Rolls-Royce Goshawk evaporatively cooled inline engine; many of the submissions produced by various aviation companies in response accordingly featured the Goshawk engine.[5] However, the Goshawk engine proved to be unreliable, mainly due to its overcomplex and underdeveloped cooling system, and unsuited to use on fighter aircraft and this outcome stalled development of the aircraft intended to use it.[5] A further stumbling point for many of the submitted designs was the placement of the machine gun breeches within arm's reach of the pilot. At the same time, the development of monoplane fighters such as the Hawker Hurricane and Supermarine Spitfire cast doubt over the future viability of the requirement altogether.[5]
