Hawker Hotspur
1938
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Hawker Hotspur

When, in 1935, Specification F.9/35 was issued for a two-seat interceptor fighter to replace the Demon, both Hawker and Boulton Paul tendered proposals for aircraft fitted with the Boulton Paul turret mounting four 0.303-in (7,7-mm) machine guns. Hawker's submission was based on redesign of the Henley light bomber, prototype construction of which had just commenced. Like the Henley, it utilised standard Hurricane outer wing panels. Dubbed Hotspur, the prototype of the two-seat fighter was not flown until 14 June 1938, and then with only a wooden mock-up of the turret and with ballast equivalent to the weight of armament. Powered by a 1,030 hp Rolls-Royce Merlin II, the Hotspur proved faster than the competitive Boulton Paul Defiant, but as Hawker and its parent Group were fully committed to production of the Hurricane, no effort was made to bring the prototype Hotspur up to representative Service standard and development was discontinued, the aircraft subsequently being utilised for flap and dive brake development. The following data relate to the aircraft as flown with mock-up turret.

3-View 
Hawker HotspurA three-view drawing (1613 x 1147)


Specification 
 WEIGHTS
    Take-off weight3470 kg7650 lb
    Empty weight2631 kg5800 lb
 DIMENSIONS
    Wingspan14.59 m48 ft 10 in
    Length11.01 m36 ft 1 in
    Height4.37 m14 ft 4 in
    Wing area31.77 m2341.97 sq ft
 PERFORMANCE
    Max. speed509 km/h316 mph

Comments
Andres Erdos, 16.08.2012

In the same fashion as the Henley, the Hotspur utilised standard Hurricane outer wing panels. One prototype aircraft, K8309, was built in 1937, fitted with armament of four 0.303 in (7.7 mm) Brownings in a B-P dorsal turret plus one .303 in (7.7 mm) Vickers gun mounted in the front fuselage. The completion of the prototype was delayed until 1938, by which time the rival Boulton Paul Defiant had already flown. The Hotspur first flew on 14 June 1938 with only a wooden mock-up of the turret and with ballast equivalent to the weight of armament.
As Hawker was committed to the production of Henleys and Hurricanes the project was abandoned. The mock-up turret was removed and a cockpit fairing installed. Planned production by Avro to Specification 17/36 was abandoned and the prototype, with turret removed, served at the RAE Farnborough on miscellaneous test programmes of flap and dive brake configurations until 1942.

Burunduk, 01.02.2011

C Burke, agree. Span = 12,34m, length = 10,02m.

C Burke, 07.08.2010

Your specs for the Hotspur are incorrect, and probably direct from the Henley. The Hotspur had a 40-foot wingspan and 32 length--a considerably smaller aircraft rivaling the Defiant.
Cheers!

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