Supermarine Spitfire Variants: Specifications, Performance and Armament - Dimensions, Performance and Armament - Early Merlin Engines

Early Merlin Engines

Supermarine Spitfire- Merlin engine variants
Mk IA (K9793-early production, de Havilland two speed propeller) Mk IIA (P7280) Mk VB (W3134) L.F. Mk VB (W3228) Mk VI (AB200)
Wingspan 36 ft 10 in (11.23 m) 36 ft 10 in (11.23 m) 36 ft 10 in (11.23 m) 32 ft 10 in (9.9 m) 40 ft 2 in (12.24 m)
Wing area 242.1 ft² (22.5 m²) 242.1 ft² (22.5 m²) 242.1 ft² (22.5 m²) 231 ft² (21.46 m²) 248.5 ft² (23.1 m²)
Length 29 ft 11 in (9.12 m) 29 ft 11 in (9.12 m) 29 ft 11 in (9.12 m) 29 ft 11 in (9.12 m) 29 ft 11 in (9.12 m)
Height 9 ft 10 in (3.02 m) 9 ft 10 in (3.02 m) 11 ft 5 in (3.48 m) 11 ft 5 in (3.48 m) 11 ft 5 in (3.48 m)
Empty weight 4,306 lb (1,953 kg) 4,541 lb (2,059 kg) 4,963 lb (2,251 kg) 4,963 lb (2,251 kg)
Loaded weight 5,935 lb (2,692 kg) 6,172 lb (2,799 kg) 6,525 lb (3,071 kg) 6,450 lb (2,925 kg) 6,740 lb (3,057 kg)
Engine Rolls-Royce Merlin III Rolls Royce Merlin XII Rolls-Royce Merlin 45 Rolls-Royce Merlin 50M Rolls-Royce Merlin 47
Power 1,030 hp (770 kW) at 16,000 ft (4,877 m) 87 Octane fuel, +6 lb/in² boost 1,135 hp (846 kW) at 12,250 ft (3,734 m) 100 Octane fuel, +9 pounds lb/in² boost 1,470 hp (1,096 kW) at 11,000 ft (3,353 m) 1,585 hp (1,181 kW) at 3,800 ft (1,158 m) 1,415 hp (1,054 kW) at 14,000 ft (4,267 m)
Maximum speed 367 mph (582 km/h) at 18,600 ft (5,669 m) 354 mph (570 km/h) at 17,550 ft (5,349 m) 371 mph (597 km/h) at 20,000 ft (6,096 m) 350.5 mph (564 km/h) at 5,900 ft (6,096 m) 354 mph (570 km/h) at 17,400 ft (5,349 m)
Rate of climb 2,175 ft/min (11.0 m/s) at 9,700 ft (2,956 m) 2,995 ft/min (15.3 m/s) at 10,000 ft (3,962 m) 3,250 ft/min (16.5 m/s) at 15,000 ft (4,572 m) 4,720 ft/min (24.0 m/s) at sea level 1,350 ft/min (13.5 m/s) at 28,000 ft (4,267 m)
Service ceiling 34,400 ft (10,485 m) 37,600 ft (11,460 m) 35,000 ft (10,668 m) 35,700 ft (10,881 m) 39,200 ft (11,948 m)
Wing loading 24.5 lb/ft² (117 kg/m²) 25.4 lb/ft² (122 kg/m²) 27.9 lb/ft² (137 kg/m²) 26.6 lb/ft² (130&npsb;kg/m²) 27.0 lb/ft² (137 kg/m²)
Power/mass 0.17 hp/lb (0.28 kW/kg) 0.18 hp/lb (0.30 kW/kg) 0.22 hp/lb (0.36 kW/kg) 0.21 hp/lb (0.35 kW/kg) 0.21 hp/lb (0.35 kW/kg)
Combat range 425 mi (680 km) on internal fuel 405 mi (651 km) on internal fuel 470 mi (760 km) on internal fuel 470 mi (760 km) on internal fuel 428 mi (688 km) on internal fuel
Ferry range 1,135 mi (1,827 km) 1,530 mi (2,462 km) with 170 Imp gal (204 US gal) drop tank
Armament
  • 8 × 0.303" Browning machine guns; 350 rpg
  • 2 × 20 mm (0.79 in) Hispano II cannon; 60 round drum
  • 4 × 0.303" Browning machine guns; 350 rpg
  • 2 × 250 lb (113 kg) or 1 × 500 lb (227 kg) bombs
  • 2 × 20 mm (0.79 in) Hispano II cannon; 60 round drum
  • 4 × 0.303" Browning machine guns; 350 rpg
  • 2 × 250 lb (113 kg) or 1 × 500 lb (227 kg) bombs
  • 2 × 20 mm (0.79 in) Hispano II cannon; 60 round drum
  • 4 × 0.303" Browning machine guns; 350 rpg

Read more about this topic:  Supermarine Spitfire Variants: Specifications, Performance And Armament, Dimensions, Performance and Armament

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