Lockheed SR-71 Blackbird

The Lockheed SR-71 Blackbird is a long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation.

It was operated by both the United States Air Force (USAF) and NASA.

Variants

SR-71A was the main production variant.

SR-71B was a trainer variant.

SR-71C was a hybrid trainer aircraft composed of the rear fuselage of the first YF-12A and the forward fuselage from an SR-71 static test unit.

The YF-12 had been wrecked in a 1966 landing accident.

This Blackbird was seemingly not quite straight and had a yaw at supersonic speeds.

Specifications

Crew

2

Length

107 ft 5 in (32.74 m)

Wingspan

55 ft 7 in (16.94 m)

Height

18 ft 6 in (5.64 m)

Wheel track

16 ft 8 in (5 m)

Wheelbase

37 ft 10 in (12 m)

Wing area

1,800 sq ft (170 m2)

Aspect ratio

1.7

Empty weight

67,500 lb (30,617 kg)

Gross weight

152,000 lb (68,946 kg)

Max take-off weight

172,000 lb (78,018 kg)

Fuel capacity

12,219.2 US gal (10,174.6 imp gal; 46,255 l) in 6 tank groups (9 tanks)

Powerplant

2 × Pratt & Whitney J58 (JT11D-20J or JT11D-20K) afterburning turbojets, 25,000 lbf (110 kN) thrust each

JT11D-20J 32,500 lbf (144.57 kN) wet (fixed inlet guidevanes)

JT11D-20K 34,000 lbf (151.24 kN) wet (2-position inlet guidevanes)

Performance

Maximum speed

1,910 kn (2,200 mph, 3,540 km/h) at 80,000 ft (24,000 m)

Maximum speed

Mach 3.32

Ferry range

2,824 nmi (3,250 mi, 5,230 km)

Service ceiling

85,000 ft (26,000 m)

Rate of climb

11,820 ft/min (60.0 m/s)

Wing loading

84 lb/sq ft (410 kg/m2)

Thrust/weight

0.44

Avionics

3,500 lb (1,588 kg) of mission equipment

Itek KA-102A 36–48 in (910–1,220 mm) camera

SIGINT and ELINT equipment in the following compartments

A – nose radar

D – right chine bay

E – electronics bay

K – left forward mission bay

L – right forward mission bay

M – left forward mission bay

N – right forward mission bay

P – left aft mission bay

Q – right aft mission bay

R – radio equipment bay

S – left aft mission bay

T – right aft mission bay.

 

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