jeffpn said:
How did you determine that?
Because it was the first US manufactured OPERATIONAL jet fighter;
it was designed by Clarence "kelly" Johnson, creator of the P-38, F-104, U-2, SR-71, and F-117.
The P-80s performance surpassed the Messerschmidt ME-262.
Crew: One
Length: 34 ft 5 in (10.49 m)
Wingspan: 38 ft 9 in (11.81 m)
Height: 11 ft 3 in (3.43 m)
Wing area: 237.6 ft² (22.07 m²)
Aspect ratio: 6.37
Empty weight: 8,420 lb (3,819 kg)
Loaded weight: 12,650 lb (5,738 kg)
Max takeoff weight: 16,856 lb (7,646 kg)
Powerplant: 1 × Allison J33-A-35 centrifugal compressor turbojet, 5,400 lbf (24.0 kN)
Zero-lift drag coefficient: 0.0134
Drag area: 3.2 ft² (0.30 m²)
Performance--
Maximum speed: 600 mph (P-80A 558 mph at sea level and 492 mph at 40,000 feet)[7] (965 km/h)
Cruise speed: 410 mph (660 km/h)
Range: 1,200 mi (1,930 km)
Service ceiling: 46,000 ft (14,000 m)
Rate of climb: 4,580 ft/min (23.3 m/s) 5.5 min to 20,000 ft (6,100 m)
Wing loading: 53 lb/ft² (260 kg/m²)
Thrust/weight: 0.43
Lift-to-drag ratio: 17.7
The T-33
Crew: Two
Length: 37 ft 9 in (11.49 m)
Wingspan: 38 ft 10.5 in (11.86 m)
Height: 11 ft 8 in (3.57 m)
Empty weight: 8,300 lb (3,775 kg)
Max takeoff weight: 15,100 lb (6,865 kg)
Powerplant: 1 × Allison J33-A-35 centrifugal compressor turbojet, 5,400 lbf (23 kN)
Performance
Maximum speed: 600 mph (970 km/h)
Range: 1,275 mi ferry (2,050 km)
Service ceiling: 48,000 ft (14,600 m)
(specs shown are from Wikipedia)