Saab 29 Tunnan

 

1st Flight 1948

The Saab 29 Tunnan is a Swedish fighter that was designed and manufactured by Saab in the 1940s.

It was the second turbojet-powered combat aircraft to be developed in Sweden, the first being the Saab 21R, and it was the first Western European fighter to be produced with a swept wing post World War II, only being preceded in Western Europe as a whole by the Me 262 built during the war.

Despite its rotund appearance, from which its name is derived, the J 29 was fast and agile and served effectively in both fighter and fighter-bomber roles into the 1970s.

Variants

J 29

Four prototypes built in 1949–50.

J 29A

Fighter, 224 built from 1951 to 1954, later series had wing-mounted dive brakes moved to the fuselage, ahead of the main landing gear doors.

J 29B

Fighter, 332 built 1953–55; featured 50% larger fuel capacity and underwing hardpoints to carry bombs, rockets and drop-tanks.

A 29B

Same aircraft as the J 29B, when serving with attack units.

S 29C

Reconnaissance, 76 built from 1954 through 1956, five cameras mounted in a modified nose.

Later modified with the improved wing design introduced on the J 29E.

J 29D

Single prototype to test Ghost RM 2A turbojet with 27.5 kN (2,800 kgp/6,175 lbf) afterburning thrust; ultimately converted to J 29 F standard.

Also tested with four m/55 AKANs.

J 29E

Fighter, 29 built in 1955; introduced an improved wing design with a leading edge dogtooth to increase the critical Mach number.

J 29F

Fighter, 308 aircraft converted from available stocks of B and E model airframes from 1954 to 1956; featured the afterburning Ghost and dog-tooth wing; all remaining aircraft were further modified in 1963 to carry a pair of US-designed AIM-9B Sidewinder heat-seeking air-to-air missiles, built by SAAB under license as the Rb 24.

Specifications

Crew: 1

Length: 10.23 m (33 ft 7 in)

Wingspan: 11 m (36 ft 1 in)

Height: 3.75 m (12 ft 4 in)

Wing area: 24.15 m2 (259.9 sq ft)

Empty weight: 4,845 kg (10,681 lb)

Max takeoff weight: 8,375 kg (18,464 lb)

Powerplant: 1 × Svenska Flygmotor RM2B centrifugal-flow turbojet engine with afterburning, 27.0 kN (6,070 lbf) thrust

Performance

Maximum speed: 1,060 km/h (660 mph, 570 kn)

Range: 1,100 km (680 mi, 590 nmi)

Service ceiling: 15,500 m (50,900 ft)

Rate of climb: 32.1 m/s (6,320 ft/min)

Armament

Guns:

4 x 20 mm (0.79 in) Hispano Mark V autocannon

Rockets:

75 mm (3 in) air-to-air rockets

145 mm (5.7 in) Armour-Piercing rockets

150 mm (6 in) High-Explosive rockets

180 mm (7.1 in) High-Explosive anti-ship rockets

Missiles:

Rb 24 (AIM-9 Sidewinder) air-to-air missiles.

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