The radical nature of the Spitfire's design is difficult to appreciate now, when we are long accustomed to low-wing cantilever, all-metal monoplanes with an enclosed cockpit and retractable landing gear. , The Seafire II was able to outperform the A6M5 Zero at low altitudes when the two types were tested against each other during wartime mock combat exercises. The Supermarine Spitfire is one of World War II's iconic planes. 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. Then the aircraft received a final once-over by our ground mechanics, any faults were rectified and the Spitfire was ready for collection. On 3 June 1936, the Air Ministry placed an order for 310 aircraft, at a cost of £1,395,000. To carry out the mission of home defence, the design was intended to allow the Spitfire to climb quickly to intercept enemy bombers. He oversaw a group of 10 to 12 pilots responsible for testing all developmental and production Spitfires built by the company in the Southampton area. Its handling qualities have benefitted (sic) to a corresponding extent and it is now considered suitable both for instrument flying and low flying.  The Mk 21 armament was standardised as four 20mm Hispano II cannon with 150 rpg and no machine guns. As a result, the Spitfire's performance and capabilities improved over the course of its service life. There were difficulties with management, who ignored Supermarine's tooling and drawings in favour of their own, and the workforce continually threatened strikes or "slow downs" until their demands for higher wages were met.. That any operational aircraft off the production line, cannons sprouting from its wings and warts and all, could readily be controlled at this speed when the early jet aircraft such as, Articles and topics related to the Supermarine Spitfire, Manufacturing at Castle Bromwich, Birmingham, Search for reported surviving Spitfires in Burma.  It then went through a series of changes, including the incorporation of an enclosed cockpit, oxygen-breathing apparatus, smaller and thinner wings, and the newly developed, more powerful Rolls-Royce PV-XII V-12 engine, later named the "Merlin". Aircraft performance and design (pdf file) pp. It had been maintained in running condition by ground crews at Binbrook, and after a short time was participating in the trials. … Stuka dive bomber. The new engine had a lower thrust-line than the Merlin and was set with 2 degrees of downthrust. With the propeller axle retained at the same level as before, the rear part of the top engine block had to be tilted up and came up higher than in the Mk. These were soon removed and a mock up of a proposed six-cannon armament was fitted, three in each wing. The two radiator flaps were now operated automatically by a thermostat. This aircraft was the 155th built and first flew in April 1939.  The first airframe (PM631) developed mechanical issues which removed it from the trial. Interim reports were later issued on a piecemeal basis. Later, other squadrons in the Far East and Middle East would receive them. "Spitfire: A Test Pilot's Defence. When 150 octane fuel was introduced in mid-1944 the "boost" of the Griffon engine was able to be increased to +25 lbs (80.7"), allowing the top speed to be increased by about 30 mph (26 kn; 48 km/h) to 400 mph (350 kn; 640 km/h) at 2,000 ft (610 m). Over the next month, other raids were mounted until, on 26 September 1940, both factories were destroyed, with 92 people killed and a large number injured. These laminar-flow airfoils were the Supermarine 371-I used at the root and the 371-II used at the tip. The version of the Spitfire that fought in the Battle of Britain was powered by a Merlin engine of 1,030 horsepower. Like the Mk XIV there were fighter and fighter reconnaissance variants built. ", There were 24 marks of Spitfire and many sub-variants. This information was needed in case RAF Lightnings might have to engage P-51 Mustangs in the Indonesian conflict of the time.. Barbic, Vlasco. The increase in performance was minimal and this experiment was abandoned. [nb 12], In March 1941, a metal disc with a hole was fitted in the fuel line, restricting fuel flow to the maximum the engine could consume. is listed. For other uses, see, British single-seat WWII fighter aircraft. After the first 25 (type 389s) were produced, later aircraft were also fitted with the pressurised cabin of the Mk X and the fuel capacity was increased to 256 gallons, three-and-a-half times that of the original Spitfire This version was the type 390.. , The key aim of Fighter Command was to stop the Luftwaffe's bombers; in practice, whenever possible, the tactic was to use Spitfires to counter German escort fighters, by then based in northern France, particularly the Bf 109s, while the Hurricane squadrons attacked the bombers. Strap on a Spitfire! A total of 81 Mk 24s were completed, 27 of which were conversions from Mk 22s. Although the Griffon-engined Spitfires were never produced in the large numbers of the Merlin-engined variants they were an important part of the Spitfire family, and in their later versions kept the Spitfire at the forefront of piston-engined fighter development. The same day P7666 was delivered to the Squadron, 23 November 1940, Finlay destroyed a Bf 109 on his first operational sortie in the aircraft. 2 × 20 mm Hispano Mk II cannon with 120 rounds-per-gun (rpg) in the outer bays combined with 2 ×, 4 × 20 mm Hispano cannon with 120 rpg (this configuration was rarely fitted.). Spitfire VIII (RR Merlin 63, 66, 70) - F, HF, LF versions, Spitfire V airframe with a RR Merlin 60 series engine and retractable tail wheel. Later, a new fuselage was designed, with the new fighter becoming the Supermarine Spiteful.  Early Seafire marks had relatively few modifications to the standard Spitfire airframe; however cumulative front line experience meant that most of the later versions of the Seafire had strengthened airframes, folding wings, arrestor hooks and other modifications, culminating in the purpose-built Seafire F/FR Mk 47. This page was last edited on 28 December 2020, at 12:57. , Early in its development, the Merlin engine's lack of fuel injection meant that Spitfires and Hurricanes, unlike the Bf 109E, were unable to simply nose down into a steep dive. "Spitfire: Simply Superb part three" Air International Volume 28, Number 4, April 1985. It is one of only four flying MK 1 Spitfires in the world. Outside on the tarmac at Worthy Down stood the inoffensive-looking but highly potent DP485 ... To avoid the expansion of fuel in hot weather damaging the wing, pressure relief valves, incorporating small external vent pipes, were fitted near the wing tips.. Over a six-year period in the 1990s, this aircraft was slowly restored by Personal Plane Services in England using almost 90% of its original aircraft skins. These were referred to as Mk IX UTI and differed from the Supermarine proposals by using an inline "greenhouse" style double canopy rather than the raised "bubble" type of the T Mk VIII. "World War II Fighter Aerodynamics. In December, it was refitted with a Griffon 61 and re-designated as a Mk 21 initial prototype. Media related to Supermarine Spitfire Mark XIV at Wikimedia Commons. This meant a Luftwaffe fighter could simply "bunt" into a high-power dive to escape an attack, leaving the Spitfire behind, as its fuel was forced out of the carburettor by negative "g". One feature of the Griffon engine which was to catch a lot of pilots out was that the propeller rotated in the opposite direction to that of the Merlin; i.e.,: to the left, from the pilot's perspective, rather than to the right. A scale replica is on display at the Returned Services League (RSL) Club in Bendigo, Victoria. The Spitfire sound collection includes 280 clips in 12.92 gigabytes of audio. A fibreglass replica in the colours of a Polish squadron leader based at the station during the Second World War is on display at, A replica Spitfire is on display on the Thornaby Road roundabout near the school named after Sir Douglas Bader who flew a Spitfire in the Second World War. "The Spitfire and its Wing: Article and scale drawings. In February 1936 the director of Vickers-Armstrong, Sir Robert MacLean guaranteed production of five aircraft a week, beginning 15 months after an order was placed. The pilot standing in front of the aircraft is pre-War Olympic hurdler, Sqn. With the increasing use of hard-surfaced runways in the post-war years many Spitfires were either manufactured, or retro-fitted with, larger mainwheels which were of a "three spoke" pattern. ", "Monument campaign for WWII female auxiliary pilots", "Eden Camp Modern History Theme Museum, Malton, North Yorkshire", "How realistic are Dunkirk's Spitfire flight scenes? 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