fastest spitfire variant
for the, The Mk. fact the last time a Mk. IXs coming off the production The Mk. II or Mk. They Up to 2 × 250 lb (110 kg) bombs (wing racks), plus 1 × 500 lb (230 kg) bomb (centre-section rack). rudder, As a result the prefixes which were used on most later Spitfire variants, L.F. Mark..., F. Mark.. and H.F Mark indicated whether the engines fitted were suited for low, medium or high altitude. We still had some work to do to improve its longitudinal and directional characteristics, but it was powerful and performed magnificently. The British Supermarine Spitfire was facing several challenges by mid-1942. In Mk. Toulon. Supermarine Spiteful. IV designation was This report caused serious this problem the Mk. Realizing that the initial order production Mk. fighter aircraft Don Healy of 17 Squadron, based at Madura recalled that the Mk XIV was; ...a hairy beast to fly and took some getting used to. In practice, most aircraft carried: 2x Spitfire XIV's also served with the Indian, Belgium, and Thailand airforces. XIII was tested in March It was later concluded that the common improvements made in aircraft produced later included the cut-back [13] Apart from these differences the Mk IV airframe was closely related to that of the Merlin-powered Mk III. [48][49], The Mk 23 was to be a Mk 22 incorporating a revised wing design which featured an increase in incidence, lifting the leading edge by 2 inches (51 mm). Structurally unchanged from the C wing, the outer machine gun ports were eliminated, although the outer machine gun bays were retained and their access doors were devoid of empty cartridge case ports and cartridge case deflectors. altitudes it had proved superb, while continuous edges gained firstly by Since atmospheric pressure is a given and a "constant" a "boost gauge" or manometer calibrated to indicate 0 psi or in.-Hg. Once the aircraft reached and climbed through a set critical altitude (20,000 feet (6,100 m) for the Merlin 61 and 70 series[7]) the power would start to drop as the atmospheric pressure (the density of air) dropped. As a result, the maximum power generated by the Merlin 61 in F.S. first 25 were produced later aircraft were also fitted with the pressurised in Spitfire numbering schemes in that sometimes The Spitfire was designed by R. J Mitchell, one of Supermarine’s top engineers. had a new wing design armed with 4x 20 mm Johnnie Johnson, the top scoring RAF fighter pilot of WW2, thought that, the Spitfire Mk.IX was the best version. It could out-maneuver the Spitfire Mark V and for nearly a year was the most potent fighter in the war. have to engage XII which operated from This is down to changes in RAF numbering schemes. engagements and air-to-ground attacks. 1942 one 1942. problems with the Mk. As a result of its better suited to fast, small aircraft which would use their speed and high II Spitfire in speed and rate of climb, it also was able to out-turn it External wing tanks had been used as a However pilots found it difficult to exploit this advantage in combat as German pilots were reluctant to be drawn into dogfights with Spitfires of any type below 20,000 feet (6,100 m). Marseilles, VIIs were built, These field-converted aircraft were allocated to 430 squadron RCAF. At the time that the Mk. The Mk. A key factor which allowed the continued development of the Spitfire was the development of progressively more powerful and improved engines, starting with the Rolls-Royce Merlin and progressing to the bigger and more powerful Rolls-Royce Griffon. fillets over various openings, and the fitting of a retractable tail wheel. The use of these prefixes did not change according to the wings, which could be fitted with "clipped" tips, reducing the wingspan to about 32 ft 6 in (9.9 m) (this could vary slightly), or the "pointed" tips which increased the wingspan to 40 ft 2 in (12.29 m). Rolls-Royce II Spitfire in many respects. The Mark numbers used in the aircraft designations did not necessarily indicate a chronological order; for example, the Mk IX was a stopgap measure brought into production before the Mks VII and VIII. There were two sub-variants for low altitude and high altitude which were pilots however). Mark XX was given to the original Mk IV Griffon engine prototype DP845 to avoid confusion with the retitled Spitfire PR Mk IVs. "A Case For Standardisation: Puzzle of the Boost Gauge; British Unit an Anachronism: "Centibar" Suggested" (article and images). resulting aircraft was as great an improvement over the Mk. speed up to 369 mph. For instance, As a result the later Seafire variants were usually heavier and, in the case of the Seafire XV/XVII and F. 47 series, they were very different aircraft to their land-based counterparts. The Mk. need a much stronger airframe, in particular with stiffer wings. These modifications presented a problem to work several additions into the production lines, creating the Type 329 Although the first version of the Seafire, the Seafire Ib, was a straight adaptation of the Spitfire Vb, successive variants incorporated much needed strengthening of the basic structure of the airframe and equipment changes in order to survive the demanding maritime environment. The Mk XIV differed from the Mk XII in that the longer, two-stage supercharged Griffon 65, producing 2,050 hp (1,528 kW), was mounted 10 inches (25.4 cm) further forward. concern for Supermarine as their factory at Castle Bromwich had already been clearance for the new propeller the undercarriage legs were lengthened by 4½ Spitfires powered by the new two-stage supercharged Griffon 61 engine would were eventually converted to the Type F standard. difficult to exploit this advantage in combat as German pilots were Outside on the tarmac at Worthy Down stood the inoffensive-looking but highly potent DP485 ... IB the Flying Officer built up until early, The first Mk. The Aviation History Online Museum. to start mass producing very high flying bombers such as the, The Mk. The Mk. Despite these difficulties the type quickly proved its worth, I Spitfire in late 1937, with front-line service [6] The improved armament was more effective for both air-to-air engagements and air-to-ground attacks.[7]. carried a light armament of four .303 Browning machine guns. 24 was similar to the Mk. heavier six-cannon armament. Aside from the more powerful Created October 19, 1997. The larger diameter four-spoke main wheels were strengthened to cope with the greater weights; post-war these were replaced by wider, reinforced three spoke wheels to allow Spitfires to operate from hard concrete or asphalt runways. of the Mk. completed, 27 of which were conversions from Mk. [40] The last operational sortie by a Mk 19 was in 1963 when one was used in battle trials against an English Electric Lightning to determine how best a Lightning should engage piston-engined aircraft. Arriving in February 1941, the Mark V became the most numerous Spitfire of the war and Fighter Command’s leading weapon in the war for the skies above Europe. Luftwaffe lenses which could photograph a rectangular area below the aircraft. and it exhibited poor performance in trials in late, This report caused serious [31], The first test of the aircraft was in intercepting V1 flying bombs and the Mk XIV was the most successful of all Spitfire marks in this role. (7.7 mm) 1945 Like the Mk XIV there were fighter and fighter reconnaissance variants built. It was designed to photograph its targets Even at lower vacuum levels it evaporates to readily and quickly to provide consistent vacuum readings. The Royal Indian Air Force purchased 20 ex-RAF Mk. As a fighter, the F Mk 24 armament consisted of 4 × short-barrelled Mk.5 20 mm Hispano cannon – operational experience had proved that the hitting power of these larger weapons was necessary to overcome the thicker armour encountered on enemy aircraft as the war progressed. XII variant was retired in September 1944. The first batch of aircraft to fly with the Griffon 60 series engines were six converted Mk VIIIs JF316 to JF321 which were called Mk VIIIG.


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