SR-71黑鳥(SR-71A)

http://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird

General characteristics
Crew: 2
Payload: 3,500 lb (1,600 kg) of sensors
Length: 107 ft 5 in (32.74 m)
Wingspan: 55 ft 7 in (16.94 m)
Height: 18 ft 6 in (5.64 m)
Wing area: 1,800 ft2 (170 m2)
Empty weight: 67,500 lb (30,600 kg)
Loaded weight: 152,000 lb (69,000 kg)
Max takeoff weight: 172,000 lb (78,000 kg)
Powerplant: 2 × Pratt & Whitney J58-1 continuous-bleed afterburning turbojets, 34,000 lbf (151 kN) each
Wheel track: 16 ft 8 in (5.08 m)
Wheelbase: 37 ft 10 in (11.53 m)
Aspect ratio: 1.7
Performance
Maximum speed: Mach 3.3[84][85][N 4] (2,200+ mph, 3,530+ km/h, 1,900+ knots) at 80,000 ft (24,000 m)
Range: 2,900 nmi (5,400 km)
Ferry range: 3,200 nmi (5,925 km)
Service ceiling: 85,000 ft (25,900 m)
Rate of climb: 11,810 ft/min (60 m/s)
Wing loading: 84 lb/ft2 (410 kg/m2)
Thrust/weight: 0.44

看了SR-71A的數據我越來越相信J20可以飛到3M,可能還會超過,不計代價狂飛說不定可以飛到3.5M........
如果J20不計代價狂飛可以飛到3.0M~3.5M,那J20的超巡速度在2.0M~2.5M幾乎是可以肯定......



http://en.wikipedia.org/wiki/Lockheed_SR-71_Blackbird

General characteristics
Crew: 2
Payload: 3,500 lb (1,600 kg) of sensors
Length: 107 ft 5 in (32.74 m)
Wingspan: 55 ft 7 in (16.94 m)
Height: 18 ft 6 in (5.64 m)
Wing area: 1,800 ft2 (170 m2)
Empty weight: 67,500 lb (30,600 kg)
Loaded weight: 152,000 lb (69,000 kg)
Max takeoff weight: 172,000 lb (78,000 kg)
Powerplant: 2 × Pratt & Whitney J58-1 continuous-bleed afterburning turbojets, 34,000 lbf (151 kN) each
Wheel track: 16 ft 8 in (5.08 m)
Wheelbase: 37 ft 10 in (11.53 m)
Aspect ratio: 1.7
Performance
Maximum speed: Mach 3.3[84][85][N 4] (2,200+ mph, 3,530+ km/h, 1,900+ knots) at 80,000 ft (24,000 m)
Range: 2,900 nmi (5,400 km)
Ferry range: 3,200 nmi (5,925 km)
Service ceiling: 85,000 ft (25,900 m)
Rate of climb: 11,810 ft/min (60 m/s)
Wing loading: 84 lb/ft2 (410 kg/m2)
Thrust/weight: 0.44

看了SR-71A的數據我越來越相信J20可以飛到3M,可能還會超過,不計代價狂飛說不定可以飛到3.5M........
如果J20不計代價狂飛可以飛到3.0M~3.5M,那J20的超巡速度在2.0M~2.5M幾乎是可以肯定......