Saab 21R

The Saab 21R was a Swedish fighter/attack aircraft developed and produced by Saab.

It was a jet-powered development of the piston-engine SAAB 21 and was the first jet aircraft to be produced by Saab.

Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft.

Variants

J 21RA / A 21RA

First production series, powered by British-built engines, 34 built in 1950, retired in 1953.

A 21RB

Second production series, powered by Swedish-built engines, 30 built between 1950 and 1952, retired in 1956.

Specifications

Crew

1

Length

10.55 m (34 ft 7 in) including 20mm cannon

Wingspan

11.37 m (37 ft 4 in)

Height

2.9 m (9 ft 6 in)

Wing area

22.1 m2 (238 sq ft)

Airfoil

Saab laminar airfoil

Empty weight

3,090 kg (6,812 lb)

Gross weight

4,340 kg (9,568 lb)

Max take-off weight

5,615 kg (12,379 lb)

Fuel capacity

1,690 l (450 US gal; 370 imp gal) total maximum

590 l (160 US gal; 130 imp gal) in fuselage tank

300 l (79 US gal; 66 imp gal) in wing tanks

&

800 l (210 US gal; 180 imp gal) in optional tip tanks

Powerplant

1 × de Havilland Goblin II (Svenska Flygmotor RM1) centrifugal-flow turbojet engine, 13.24 kN (2,980 lbf) thrust J 21RA / A 21RA

Performance

Maximum speed

800 km/h (500 mph, 430 kn)

Cruise speed

610 km/h (380 mph, 330 kn)

Minimum control speed

155 km/h (96 mph, 84 kn)

Range

450 km (280 mi, 240 nmi) internal tanks only

Ferry range

900 km (560 mi, 490 nmi) with drop tanks

Service ceiling

12,000 m (39,000 ft)

Rate of climb

17 m/s (3,300 ft/min)

Take-off run

650 m (2,133 ft)

Armament

Guns

1 × 20 mm (0.79 in) akan m/45 with 140 rounds in the nose

4 x 12.7 mm (0.50 in) akan m/39A, 2 in the nose with 350 rpg and two in the wings with 325 rpg

Belly maximum 700 kg (1,543 lb)

Vapenkapsel paddan (toad) gunpod with 8 x 8 mm (0.31 in) Browning M1919/ksp m/22 machine guns with 800 rounds per gun

Or

10 x 8 cm (3.1 in) Armour Piercing pansarraket RP-3 m/46 rockets

Or

14.5 cm (5.7 in) High-explosive Anti-Tank pansarsprängraket m/49A & B rockets

Or

10 x 15 cm (5.9 in) High Explosive sprängraket RP-3 m/46 rockets

Or

15 cm (5.9 in) High Explosive sprängraket Bofors m/51A & B rockets

Or

5 x 18 cm (7.1 in) Semi-Armour-Piercing halvpansarraket m/49A & B rockets

Wingtips

2 x drop tanks which could be used as incendiary bombs and were tested with napalm.

 

 

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