Soko J-20 Kraguj

The J-20 Kraguj (Sparrowhawk) is light military, single-engine, low-wing single-seat aircraft with a metal airframe, capable of performing close air support, counter insurgency (COIN), and reconnaissance missions, that was designed by VTI and manufactured by SOKO of Yugoslavia, first flown in 1962.


Soko J-20 Kraguj
Class Aircraft
Type Attack
Manufacturer SOKO (Bosnia and Herzegovina)
Production Period 1968 - 1977
Origin Yugoslavia (Serbia)
Country Name Origin Year
Yugoslavia (Serbia) 1962
Country Name Operational Year Retirement Year
Croatia View
Yugoslavia (Serbia) 1968 1989 View
ManufacturerName Production From Production To Quantity
SOKO (Bosnia and Herzegovina) 1968 1977 85 View

It is of classic semi-monocoque, metal structure with a slightly tapered wing. The pilot is accommodated in an enclosed, heated and ventilated cockpit with adjustable seats. The cockpit canopy slides backwards to open. The landing gear is non-retractable with a tail wheel. Rubber dampers provide shock absorption, and hydraulic brakes are used for wheel braking.

The power plant comprises one 340 hp Textron Lycoming GSO-480-B1J6 piston engine and Hartzell HC-B3Z20-1/10151C-5 three-blade metal variable-pitch propeller. The engine cooling airflow is intensified by means of two specially designed ejectors. 36 US Gal of fuel contained in two rubber tanks enables a flight range of 350 NM for the fully armed configuration of the aircraft. 28 V DC electric power is supplied from a 1,5 kW generator and a storage battery. De-fogging and de-icing of the windshield is done by blowing of hot air.

Role COIN
Manufacturer SOKO
Designer Aeronautical Technical Institute
First flight 21 November 1962
Introduction 1964
Status Retired in 1989
Primary user Yugoslav Air Force (1968-1989)
Produced 1968-1977
Number built 85


General characteristics

  • Crew: 1
  • Length: 7.93 m (26 ft 0¼ in)
  • Wingspan: 10.64 m (34 ft 11 in)
  • Height: 3.00 m (9 ft 10in)
  • Wing area: 17.0 m² (183 ft²)
  • Airfoil: NACA 4415
  • Empty weight: 1130 kg (2,941 lb)
  • Max. takeoff weight: 1624 kg (3,580 lb)
  • Powerplant: 1 × Lycoming GSO-480-B1A6 6-cylinder air cooled horizontally opposed, 254 kW (340 hp)

Performance

  • Maximum speed: 295 km/h (159 knots, 183 mph) at 1,500 m (5,000 ft)
  • Cruise speed: 280 km/h (151 knots, 174 mph)
  • Stall speed: 88 km/h (48 knots 55 mph)
  • Range: 800 km (475 NM, 500 mi)

Armament

  • Guns: 2 × 7.7 mm Colt Browning Mk.II machine guns (650 rounds each)
  • Rockets: 2 × 12 round rocket pack or 6 × 57 mm or 127 mm rocket
  • Bombs: 2 × 100 kg (220 lb) bombs

End notes