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Supermarine 371 Spiteful / Seafang

sup-spiteful


Conceived as a successor to the Spitfire, the Type 371 was projected from November 1942, initially mating a laminar flow wing with a Griffon-engined Spitfire XIV and progressively embracing a new fuselage. Three prototypes were ordered to Specification F.1/43, which was written around the project, and the first of these flew on 30 June 1944. This prototype comprised a Spitfire XIV fuselage with the new wing, a 2,035hp Rolls-Royce Griffon 61 engine and an armament of four 20mm cannon.

Named Spiteful, the second prototype flew on 8 January 1945 with the new fuselage, an all-round vision cockpit canopy and a 2,375hp Griffon 69 driving a five-bladed propeller. Production orders were placed for 188 Spitefuls, but only 16 were flown of 19 built or partially-completed (from April 1945) as the end of World War II and the advent of the jet fighter terminated plans for RAF use of the Spiteful. The designation F Mk 14 was applied to the Griffon 69-powered Spiteful; the proposed F Mk 15 had either the Griffon 89 or 90 with a six-bladed contraprop, and a single F Mk 16 had a Griffon 101 with a three-speed supercharger and five-bladed propeller. The two conversions from the Mark XIV, RB516 and RB518 were fitted with the Griffon 101 engine producing 2,420 hp and a top speed of 494 mph.

Development of a navalised Spiteful was pursued during 1945 to Specification N.5/45, and a contract was placed for two prototypes and 150 series aircraft, the name Seafang being assigned. A Spiteful F Mk 15 with a "sting"-type arrester hook was tested early in 1945, and the Seafang prototypes flew in the following year. One of these represented the production Seafang F Mk 31 with Griffon 61 engine and a long-stroke undercarriage, but non-folding wings. The othet represented the Seafang F Mk 32 with a Griffon 89 engine with contraprop, and upward-folding wings. Armament comprised four 20mm cannon and provision was made for carrying a pair of 454kg bombs or six 136kg rockets. After completion during 1946-47 of 10 Mk 31s and six Mk 32s (some of which were never flown) production was cancelled.

Spiteful F 14
Max take-off weight: 4513 kg / 9950 lb
Empty weight: 3334 kg / 7350 lb
Wingspan: 10.67 m / 35 ft 0 in
Length: 10.03 m / 33 ft 11 in
Height: 4.08 m / 13 ft 5 in
Wing area: 19.51 sq.m / 210.00 sq ft
Max. speed: 777 km/h / 483 mph
Ceiling: 12800 m / 42000 ft
Range: 908 km / 564 miles

Supermarine Spiteful F 16
Engine: Rolls Royce Griffon 65, 2342 hp
Length: 32.349 ft / 9.86 m
Height: 13.419 ft / 4.09 m
Wingspan: 35.499 ft / 10.82 m
Wing area: 210.006 sq.ft / 19.51 sq.m
Max take off weight: 10202.5 lb / 4627.0 kg
Weight empty: 7351.5 lb / 3334.0 kg
Max. speed: 413 kt / 764 km/h
Service ceiling: 42995 ft / 13105 m
Wing loading: 48.59 lb/sq.ft / 237.00 kg/sq.m
Maximum range: 1143 nm / 2116 km
Range: 490 nm / 908 km
Crew: 1
Armament: 4x 20mm MG, 454kg Bomb

Seafang F Mk 32
Max take-off weight: 4740 kg / 10450 lb
Empty weight: 3629 kg / 8001 lb
Wingspan: 10.67 m / 35 ft 0 in
Length: 10.39 m / 34 ft 1 in
Height: 3.82 m / 13 ft 6 in
Wing area: 19.51 sq.m / 210.00 sq ft
Max. speed: 764 km/h / 475 mph
Ceiling: 12500 m / 41000 ft
Range: 632 km / 393 miles

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Supermarine Spiteful



 

 


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