Gloster F.5/34
1937
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Gloster F.5/34

The last of the Gloster fighter designs created by H P Folland, the single-seat all-metal cantilever monoplane evolved to Specification F.5/34 (which ultimately produced the Hurricane and the Spitfire) was powered by an 840hp Mercury IX nine-cylinder radial engine and carried an armament of eight 7.7mm Browning guns. This aircraft, to which no designation was assigned other than that of the specification that it was intended to meet, suffered somewhat protracted development owing to the company's preoccupation with the Gladiator. The first of two prototypes did not commence flight trials until December 1937, with the second following in March 1938. By the time that the Gloster fighter made its debut, the Hurricane had entered service and the Spitfire had reached production, and further development of the Mercury-engined monoplane was not pursued.

3-View 
Gloster F.5/34A three-view drawing (1663 x 1213)


Specification 
 WEIGHTS
    Take-off weight2449 kg5399 lb
    Empty weight1900 kg4189 lb
 DIMENSIONS
    Wingspan11.63 m38 ft 2 in
    Length9.76 m32 ft 0 in
    Height3.09 m10 ft 2 in
    Wing area21.36 m2229.92 sq ft
 PERFORMANCE
    Max. speed508 km/h316 mph

Comments 
Tomasz, aeronauticus(@)wp.pl, 30.08.2009

With an upgraded Mercury XV engine it would have been a very promising support aircraft for the Royal Navy had the vision been there.

Leo Rudnicki, leo_rudnicki(@)hotmail.com, 24.06.2009

Sorry but the Bristol 146 is way too ugly(aesthetically challenged) for even my imagination,as well as proportionally awkward. Glad you didn't mention the Vickers Venom.

Steve Gorton, steveg(@)abkj.com, 24.06.2009

Like the similar Bristol 146, the Gloster F.5/34 suffered from the choice of a too-small engine, which made the aircraft uncompetitive with the Spitfire and Hurricane. I agree that the use of the Hercules engine poses an exciting prospect. I would anticipate performance similar to the Fw-190, and an air-cooled engine would better suit the low-altitude/ground attack mission than the Merlin. Carrier applications are obvious.

leo rudnicki, leo_rudnicki(@)hotmail.com, 14.04.2009

In my version of alternate history, Adm Boyd ruled the navy,the Fleet Air Arm had priority, Roy Fedden had a free hand and this aircraft became the fleet fighter that they never had until Sea Fury, post war. of course, it had a 90degree twist in the undercarriage per Curtiss, like F6f & F4U, 4 Hispano 20's with 150 round box magazine, Hercules engine with aft-facing exhaust as later developed, centerline and wing plumbed hardpoints for fueltanfs or bombs. Gladiator never existed, nor did Skua, Roc, Defiant, Battle,( Hurri-Bombers filled in), Fulmar etc. I had plans.....Looks Zeroish, doesn't it? Could have saved 2 Battleships, 2 cruisers and an aircraft carrier.

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