The fastest jet in the world is SR 71. Its fastest flying record is 3.3 Mach(3.3 time the sound of speed).This is the fastest flyingb "MANNED" aircraft. The fastest flying "UNMANNED" aircraft is NASA'S X-43 Hyper-X

Some information about SR-71

HISTORY:
First Flight (A-12) 26 April 1962
(SR-71A) 22 December 1964

Service Entry (A-12) November 1965
(SR-71) January 1966
Retirement

(A-12) 8 May 1968
(SR-71) 18 January 1990, 3 December 1998

CREW: (A-12) 1 pilot
(M-21) 1 pilot and 1 drone launch control officer
(YF-12) 1 pilot and 1 weapons systems officer
(SR-71) 1 pilot and 1 reconnaissance systems officer

ESTIMATED COST:

$34 million [1966$]

AIRFOIL SECTIONS:
Wing Root unknown
Wing Tip

unknown

DIMENSIONS:
Length (A-12) 102.25 ft (31.19 m)
(M-21) 102.25 ft (31.19 m)
(YF-12) 101.67 ft (30.02 m)
(SR-71) 107.42 ft (32.74 m)
Wingspan (A-12) 55.58 ft (16.96 m)
(M-21) 55.58 ft (16.96 m)
(YF-12) 55.58 ft (16.96 m)
(SR-71) 55.58 ft (16.96 m)
Height (A-12) 18.50 ft (5.64 m)
(M-21) 18.50 ft (5.64 m)
(YF-12) 18.50 ft (5.64 m)
(SR-71) 18.50 ft (5.64 m)
Wing Area (SR-71) 1,800 ft2 (167.22 m2)
Canard Area

not applicable

WEIGHTS:
Empty (SR-71) 60,000 lb (27,215 kg)
Normal Takeoff unknown
Max Takeoff (A-12) 117,000 lb (53,070 kg)
(YF-12) 124,000 lb (56,245 kg)
(SR-71) 170,000 lb (77,110 kg)
Fuel Capacity internal: 80,000 lb (36,290 kg)
external: not applicable
Max Payload

unknown

PROPULSION:
Powerplant (A-12) two Pratt & Whitney J-58 afterburning turbo-ramjets
(M-21) two Pratt & Whitney J-58 afterburning turbo-ramjets
(YF-12) two Pratt & Whitney J-58 afterburning turbo-ramjets
(SR-71) two Pratt & Whitney JT11D-20B afterburning turbo-ramjets
Thrust (A-12) 60,000 lb (267 kN)
(M-21) 80,000 lb (356 kN)
(YF-12) 63,000 lb (280 kN)
(SR-71) 65,000 lb (289 kN)

PERFORMANCE:
Max Level Speed at altitude: 2,275 mph (3,660 km/h) at 80,000 ft (24,385 m), Mach 3.35 [world record]
at sea level: unknown
Initial Climb Rate unknown
Service Ceiling 85,500 ft (26,060 m) [world record]
Range 2,590 nm (4,800 km)
Endurance 1 hr 30 min
g-Limits unknown

ARMAMENT:
Gun none
Stations 1 external hardpoint
Air-to-Air Missile none
Air-to-Surface Missile none
Bomb nuclear bombs
Other cameras, IR sensors, radar, other recon sensors
(M-21) D-21 drone

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