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Serbian AF G-4s will soon undergo full overhaul and modernisation.
25 units will be equiped with latest generation avionics, wich should prepare Serbian pilots to fly any modern aircraft.
G-4 Super Galeb
SOKO - Vazduhoplovna Industrija Mostar
Manufacturer:
Vazduhoplovna Industrija SOKO DD
Country of origin:
Yugoslavia
Class:
Trainer
Type:
Basic/advanced flying and armament trainer with light attack capability
Powerplant:
One DMB (Rolls-Royce/Bristol Siddeley) Viper Mk 632-46 turbojet rated at 17.79 kN dry
Fuel capacity: Internal fuel 1307 kg; external fuel up to 575 kg in two 369 liter drop tanks; no provision for in-flight refueling
Dimensions:
Wing: Span 9.88 m; aspect ratio 5.01; area 19.50 m2
Fuselage and tail dimensions: Length 12.25 m including probe and 11.35 m excluding probe; height 4.30 m; tailplane span 3.97 m; wheel track 3,50 m; wheel base 4.15 m Operational weights: Empty 3250 kg equipped; normal take-off 4760 kg for a training mission or 6110 kg on a normal attack mission with a warload of 1350 kg; maximum take-off weight 6330 kg
Performance:
Never exceed speed 921 km/h at 11000 m; maximum level speed ‘clean’ 920 km/h at 6000 m and 910 km/h at 4000 m; cruising speed, maximum 845 km/h at 6000 m and economical 550 km/h at 6000 m
Ferry range 2500 km with drop tanks; range 1900 km with standard fuel or 1300 km with cannon pack and four BL755 cluster bombs; radius 390 km on a lo-lo-lo attack mission with cannon pack and four BL755 cluster bombs, or 485 km on a hi-lo-hi attack mission with cannon pack and four BL755 cluster bombs, or 595 km on a lo-lo-lo attack mission with two BL755 cluster bombs and two drop tanks, or 810 km on a hi-lo-hi attack mission with two BL755 cluster bombs and two drop tanks
Maximum rate of climb at sea level 1860 m per minute; climb to 8000 m in 6 minutes; service ceiling 12850 m
G limits: -4.2 to +8
Crew:
Student and instructor in tandem on Martin-Baker Mk 10Y zero/zero ejector seats
Fixed armaments:
One 23 mm Gryazev-Shipunov GSh-23L two barrel cannon with 200 rounds in a optional 750 kg ventral pack
Disposable armaments:
Up to 1280 kg of disposable stores carried on four hardpoints (all under the wings with the inner two units each rated at 360 kg and the outer two units each at 250 kg); typical weapons are triplets of 100 and 50 kg bombs, S-8-16 cluster bomb with eight 16 kg fragmentation bomblets, KPT-150 dispenser with 40 anti-personnel or 54 anti-tank minelets, napalm tanks, L-57-16MD multiple launcher carrying 55 mm unguided rockets, L-128-04 multiple launcher carrying four 128 mm unguided rockets, twin launcher for 128 mm HVAR unguided rockets, and KM-3 pod with one 12,7 mm heavy machine gun
Electronics & operational equipment:
Standard communication and navigation equipment, plus (fire control and weapons management) Ferranti ISIS D-282 gyro sight, and (defensive sensors and systems) Iskra SD-1 RWR; there is also provision for a reconnaissance pod with cameras and an IR linescaner
Variants:
G-4 Super Galeb: Designed to replace the G-2 Galeb and Lockheed T-33 in Yugoslav service, the Super Galeb (super seagull) bears no more relationship to the G-2 Galeb than an identity of role, being and altogether more advanced machine with marked conceptual similarities to the BAe Hawk. The type was first flown in July 1978 as the G-4PPP prototype, which, with the following six pre- production aircraft, had a straight tailplane with conventional inset elevators. However, the G-4 production variant that entered in service in 1983 has a slab tailplane of distinct anhedral. The type offers a modest light attack facility in addition to the standard training role, and this capability is being expanded under an improvement program revealed in 1990 but interrupted by civil war as the former Yugoslavia fragments into a number of smaller states. The improvement program is designed to upgrade engine performance under icing conditions, update the electrical and electronic (including nav/attack) systems, and enhance weapon capability for missiles such as the R-60 (AA-8 “Aphid”) and R-73 (AA-11 “Archer”) short range AAMs, and Kh-23 (AS-7 “Kerry”) and AS-9 “Kyle” ASMs.
G-4M Super Galeb: The program for this upgraded Super Galeb has revived to provide a more capable type in the armament training and light attack roles. The variant’s improvements stem from the use of more advanced avionics and higher-rated hardpoints complemented by a missile rail at each wing tip. The avionics include a Zrak ENP-MG4 HUD, Rudi Cajavec ENS-MG4 electronic sight, gyro platform, multi function displays, and optional chaff/flare dispensers. The inner and outer hardpoints are each rated at 500 and 350 kg respectively for a maximum disposable load of 1800 kg. In other respect, the G-4M differs from the G-4 in details such as span of 10.05 m excluding tip-mounted AAMs or 10.31 m including tip-mounted AAMs, aspect ratio of 5.18, empty equipped weight of 3403 kg without missile rails and 3435 kg with missile rails, internal fuel weight of 1376 kg supplemental by up to 925 kg of external fuel in one 449 liter and two 368 liter drop tanks, normal take-off weight of 4971 kg as a trainer, maximum take-off weight of 6400 kg as an attack warplane, maximum level speed ‘clean’ of 865 km/h at 10000 m and 900 km/h at 4000 m, ferry range of 2900 km with drop tanks; range of 1800 km with standard fuel reducing to 1200 km with cannon pack, four BL755 cluster bombs and two AAMs, maximum rate of climb at sea level of 1800 m per minute, and service ceiling of 12500 m.
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