| 词条 | Soko J-20 Kraguj | ||||||||||||||||
| 释义 |
The Soko 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. DesignIt 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. ArmamentPermanent armament comprises two wing-mounted 7.7 mm Colt–Browning Mk-II machine guns with 650 rounds each and a collimator sight in the cockpit. For combat missions there is a capacity for an external load of bombs and two 57 mm and two 128 mm (HVAR-5) air-to-ground rocket launchers. Adapters on the underwing pylons can be used to switch the armament configuration from free-fall bombs to multi-tube launchers with twelve 57 mm air-to-ground rockets. Cluster or cargo bombs, or 128 mm air-to-ground rockets can be fitted. OperationThe aircraft was specially designed for low-altitude missions against day and night visible ground targets in a broad area. It was readily available to be loaded with weapons and supplied through a flexible system of auxiliary airfields that required no special preparations, especially in mountainous regions. Yugoslav military planners assumed that potential aggressor will first disable airfields. Therefore, J-20 Kraguj was designed to take-off from short unprepared runways, even ones covered in deep snow when fitted with skis. It was also called a "Partisan aircraft".{{cn|date=March 2016}} The Kraguj P-2 was intended for close ground force support, and could be used for training of pilots in visual day/night flights, aiming, missile firing and bombing of ground targets. Operators
Specifications (J-20){{aircraft specifications|plane or copter?=plane |jet or prop?=prop |ref=Jane's All the World's Aircraft 1969-70 [1] |crew=1 |capacity= |payload main= |payload alt= |length main= 7.93 m |length alt= 26 ft 0¼ in |span main= 10.64 m |span alt= 34 ft 11 in |height main= 3.00 m |height alt= 9 ft 10in |area main= 17.0 m² |area alt=183 ft² |airfoil=NACA 4415 |empty weight main= 1130 kg |empty weight alt= 2,491 lb |loaded weight main= |loaded weight alt= |useful load main= |useful load alt= |max takeoff weight main= 1624 kg |max takeoff weight alt= 3,580 lb |more general= |engine (prop)= Lycoming GSO-480-B1A6 |type of prop=6-cylinder air cooled horizontally opposed |number of props=1 |power main= 254 kW |power alt= 340 hp |power original= |max speed main=295 km/h |max speed alt=159 knots, 183 mph |max speed more=at 1,500 m (5,000 ft) |cruise speed main= 280 km/h |cruise speed alt=151 knots, 174 mph |stall speed main= 88 km/h |stall speed alt=48 knots 55 mph |never exceed speed main= |never exceed speed alt= |range main= 800 km |range alt=475 NM, 500 mi |ceiling alt= 26,250 ft |climb rate alt= 1,575 ft/min |loading main= |loading alt= |thrust/weight= |power/mass main= |power/mass alt= |more performance= |guns=2 × 7.7 mm Colt–Browning Mk.II machine guns (650 rounds each) |bombs=2 × 100 kg (220 lb) bombs |rockets= 2 × 12 round rocket pack or 6 × 57 mm or 127 mm rocket |avionics= }} See also{{aircontent||related= |similar aircraft=
|sequence= |lists= |see also= }} References1. ^J W R Taylor 1969, p.506.
External links{{Commons category}}
7 : Yugoslav attack aircraft 1960–1969|Yugoslav military trainer aircraft 1960–1969|Soko aircraft|Single-engined tractor aircraft|Low-wing aircraft|Aircraft first flown in 1962|Military Technical Institute Belgrade |
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