The redesigned upper wing gun bay doors incorporated blisters to clear the cannon belt feed motors. Spitfire Mk Vc with Type B armament setup at FHC The fairings over the Hispano barrels were shorter and there was usually a short rubber stub covering the outer cannon port when not in use.Ĭomparison of armament layout Type A ( Middle ), Type B ( Top ) and C ( Bottom ) wings on the Spitfire Mk V The Hispano Mk II cannon fitted in all cases were now belt-fed from box magazines (the Chattellerault system) allowing to double the ammunition supply to 120 rounds per gun. The revised, strengthened undercarriage legs were raked 2 inches (5.08 cm) further forward, making the Spitfire more stable on the ground and reducing the likelihood of the aircraft tipping onto its nose. The undercarriage mountings were redesigned and the undercarriage doors were bowed in cross section allowing the legs to sit lower in the wells, eliminating the upper-wing blisters over the wheel wells and landing gear pivot points. Called “universal wing”, this wing was structurally modified to reduce labour and manufacturing time and allow mixed armament options A or B type armament or a new, yet heavier combination of four 20 mm Hispano cannon.
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