Gloster Gamecock
The Gloster Gamecock was a British single-seat biplane fighter developed from the Grebe, replacing that type's unreliable Armstrong Siddeley Jaguar engine with a Bristol Jupiter radial and moving the twin Vickers guns inside the fuselage. It entered RAF service in 1926 and became a popular air-show performer, but its accident record was severe: 22 of the RAF's 90 aircraft were lost in landing or spin accidents, and the type left British front-line service in 1931. Finland adopted the improved Gamecock II, building 15 under licence as the Kukko; Finnish Gamecocks served through the 1930s and fought in the Winter War, one forcing down a Soviet DB-3 bomber in January 1940.
Why It Mattered
The Gamecock existed because the Grebe, the Royal Air Force's standard fighter of the mid-1920s, was let down by its unreliable Armstrong Siddeley Jaguar engine. Gloster answered by designing around the Bristol Jupiter radial, and its evaluation flights at Martlesham Heath drew considerable praise. In service it won a public following, as its aerobatic displays at air shows gave it a particularly attractive reputation with spectators. Its lasting interest lies in the contrast between that crowd-pleasing polish and its accident record, and in a second career in Finland, where licence-built examples were in front-line service throughout the 1930s and fought in the Winter War.
Design Notes
Work began in 1924 under Henry Folland's design team, to Air Ministry Specification 37/23, which called for a Jupiter-powered improvement of the Grebe. The fuselage was built almost completely of wood, braced internally by steel tie-rods, with a fireproof bulkhead behind the engine bay. The two Vickers machine guns moved inside the fuselage, and the Jet Age Museum counts the type among the first aircraft with internally mounted machine guns. Production aircraft were powered by the 425 hp Bristol Jupiter VI, a nine-cylinder radial, and reached a maximum speed of 155 mph. The design kept one Grebe fault, a tendency to flutter, and the improved Gamecock II of 1928 addressed the type's handling with a longer upper wing and a modified tail unit. A carrier-based derivative, the Gambet, was built as a private venture and licence-produced in Japan as the Nakajima A1N, a separate type from the Gamecock itself.
Operational History
The prototype made its maiden flight on 22 February 1925, and that September the Air Ministry placed an initial order for 30 production aircraft. The first production Gamecock flew in March 1926 and was delivered two months later, and 43 Squadron at Henlow was the first unit to take the type on. Six RAF squadrons operated the fighter in all, and pilots typically found it enjoyable to fly and a good gun platform. Its accident record, though, was severe: of the 90 aircraft the RAF operated, 22 were lost in landing or spin accidents, often involving structural failure. The last Gamecock Is left first-line RAF service in mid-1931, five years after the type entered service. Finland's interest began with a demonstration flight over Helsinki on 25 March 1927, the Gamecock II then won the Finnish contest, three aircraft were exported in 1928, and licensed production of the Kukko followed in Finland from 1929. British production for the RAF totalled 90 Gamecock Is, while Finland licence-built 15 Gamecock IIs in 1929–30. Kukkos remained in front-line Finnish service throughout the 1930s, passing progressively to training duties late in the decade. They still fought in the Winter War, most famously on 29 January 1940, when a Kukko strafed two Soviet DB-3 bombers that had landed on Finnish soil by mistake, and the crews escaped in one aircraft, leaving the other DB-3 behind to be captured by the Finns.
Afterlife
The Gamecock's British career ended in 1931, but Finland kept the type for thirteen more years. At least one Kukko remained operational until September 1944, at which point the last example was scrapped. Survival since then is fragmentary, and the Finnish Aviation Museum holds a fuselage wreck of one of the Finnish aircraft. In Gloucestershire, the Jet Age Museum displays a reproduction of the original airframe, and dates the type 1925–1940. The museum presents it as an early interwar fighter procured by the Royal Air Force.