Specifications (Spitfire Mk Vb)
Data from The Great Book of Fighters[80] and Jane’s Fighting Aircraft of World War II[81]
General characteristics
Crew: one pilot
Length: 29 ft 11 in (9.12 m)
Wingspan: 36 ft 10 in (11.23 m)
Height: 11 ft 5 in (3.86 m)
Wing area: 242.1 ft² (22.48 m²)
Airfoil: NACA 2200
Empty weight: 5,090 lb (2,309 kg)
Loaded weight: 6,622 lb (3,000 kg)
Max takeoff weight: 6,770 lb (3,071 kg)
Powerplant: 1× Rolls-Royce Merlin 45 supercharged V12 engine, 1,470 hp at 9,250 ft (1,096 kW at 2,820 m)
Performance
Maximum speed: 378 mph, (330 knots, 605 km/h)
Combat radius: 410 nmi (470 mi, 760km)
Ferry range: 991 nmi (1,140 mi, 1,840 km)
Service ceiling 35,000 ft (11,300 m)
Rate of climb: 2,665 ft/min (13.5 m/s)
Wing loading: 24.56 lb/ft² (119.91 kg/m²)
Power/mass: 0.22 hp/lb (360 W/kg)
Armament
Guns: Mk I, Mk II, Mk VA
8x 0.303-inch (7.7-mm) Browning machine guns, 350 rounds per gun
Later versions (VB on)
2× 20 mm (0.787-in) Hispano Mk II cannon, 60 (later 120 (Mk VC)) shells per gun
4× 0.303-in (7.7-mm) Browning machine guns, 350 rounds per gun
Bombs:
2× 250-lb (110-kg) bombs
^^^^^^^^^^^from here:
http://en.wikipedia.org/wiki/Supermarine_Spitfire ^^^^^^^^^^^^^
TECHNICAL NOTES:
Armament: Six .50-cal. machine guns and 10 5-in. rockets or 2,000 lbs. of bombs
Engine: Packard-built Rolls-Royce Merlin V-1650 of 1,695 hp
Maximum speed: 437 mph
Cruising speed: 275 mph
Range: 1,000 miles
Ceiling: 41,900 ft.
Span: 37 ft.
Length: 32 ft. 3 in.
Height: 13 ft. 8 in.
Weight: 12,100 lbs. maximum
Serial number: 44-74936
^^^^^^^^^^^from here:
http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=513Specifications
[edit] P-51D Mustang
Data from The Great Book of Fighters,[75] and Quest for Performance[76]
General characteristics
Crew: 1
Length: 32 ft 3 in (9.83 m)
Wingspan: 37 ft 0 in (11.28 m)
Height: 13 ft 8 in (4.17 m)
Wing area: 235 ft² (21.83 m²)
Empty weight: 7,635 lb (3,465 kg)
Loaded weight: 9,200 lb (4,175 kg)
Max takeoff weight: 12,100 lb (5,490 kg)
Powerplant: 1× Packard V-1650-7 liquid-cooled supercharged V-12, 1,490 hp (1,111 kW) at 3,000 rpm;[77] 1,720 hp (1,282 kW) at WEP
Zero-lift drag coefficient: 0.0163
Drag area: 3.80 ft² (0.35 m²)
Aspect ratio: 5.83
Performance
Maximum speed: 437 mph (703 km/h) at 25,000 ft (7,620 m)
Cruise speed: 362 mph (580 km/h)
Stall speed: 100 mph (160 km/h)
Range: 1,650 mi (2,755 km) with external tanks
Service ceiling 41,900 ft (12,770 m)
Rate of climb: 3,200 ft/min (16.3 m/s)
Wing loading: 39 lb/ft² (192 kg/m²)
Power/mass: 0.18 hp/lb (300 W/kg)
Lift-to-drag ratio: 14.6
Recommended Mach limit 0.8
Armament
6 × 0.50 in (12.7 mm) machine guns; 400 rounds per gun for the two inboard guns; 270 per outboard gun
2 hardpoints for up to 2,000 lb (907 kg)
10 × 5 in (127 mm) rockets
^^^^^^^^^from here:
http://en.wikipedia.org/wiki/P-51_Mustang ^^^^
note the power to mass ratings. that's why(at least partly) the spit can climb, and accelerate faster, turn tighter, and do seemingly impossible things.