Soko / CNIAR J-22 Orao / IAR-93



Built in Yugoslavia as the Soko Orao (eagle) and in Romania as the CNIAR (Centrul National al industriei Aeronautica Române) IAR-93, the aircraft was designed by a joint team and developed under a programme known as YuRom, the name indicating the partner countries. Prototypes assembled by Soko and CNIAR made their first flights within minutes of each other on 31 October 1974, and these were followed by a pair of two-seat variants, both of which flew on 29 January 1977. During 1978, deliveries began of a pre-production batch of 15 to each country, after which the initial series model, known in Romania as the IAR-93A, entered service. This was fitted with a pair of non-afterburning Viper Mk 632 engines, but after a short run of single and two-seat aircraft to this standard (20 of them for Romania) manufacture began of the definitive IAR-93B which features a licence-built afterburner and structural changes such as integral wing fuel tanks and a honeycomb rudder and tailplane.

The uprated Orao 2/IAR-93B flew in Jugoslavia in October 1983, and in Romania in 1985. The principal differ-ence from the earlier Orao 1/IAR-93A is the introduction of a licence-built Viper 633 with reheat, giving improved performance and weapons carrying capability. The Orao 2 has a Thomson-CSF headup display, and four under-wing and one underfuselage stores pylons. Optical and infrared reconnaissance pods are available for carriage on the centreline station.

Romania required 165 IAR-93Bs, including some two-seat models, with similar operational capability to the main version, for advanced training and weapons instruction. Yugoslav plans were believed to be similar. The Orao/lAR-93 is limited to the close support role by its lack of radar or inertial navigation, but low-level interception is a secondary duty.

The J-22 Orao/IAR-93 attack aircraft was out of production before all deliveries made, due to regional conflict.

Orao 2/IAR-93B
Engine: 2 x Rolls-Royce Viper Mk 633-47 afterburning turbojets
Installed thrust (dry / reheat): 37.7 / 44.8 kN, 2268-kg (5,000-1b)
Span: 9.62 m (31 ft 6.75 in)
Length excluding probe: 13.96 m (45 ft 9.5 in)
Height 4.45 m (14 ft 7.25 in)
Wing area: 26 sq.m (279.86 sq ft)
Empty equipped wt: 5900 kg (13,007 lb)
MTOW: 10,097 kg (22,260 lb)
Warload: 2800 kg
Max speed: 1160 kph (721 mph) at sea level
Initial ROC: 5.5 min to 13,000 m / 3960 m (12,990 ft) per min
Service ceiling 12500 m (41,010 ft)
T/O run: 690 m
Ldg run: 1050 m
Combat radius hi-lo-hi: 360 km
Fuel internal: 2600 lt
Air refuel: No
Armament: two 23-mm GSh-231, twin-barrel cannon (with 200 rpg) in front fuselage
four wing pylons and one centreline pylon carrying five x 250-kg (551-1b)

SOKO J 22 Orao 2

Engine: 2 x Rolls Royce Viper 633 41, 17462 N
Length: 45.932 ft / 14.0 m
Height: 14.764 ft / 4.5 m
Wingspan: 31.496 ft / 9.6 m
Wing area: 279.864 sq.ft / 26.0 sq.m
Max take off weight: 24806.3 lb / 11250.0 kg
Weight empty: 12678.8 lb / 5750.0 kg
Max. payload weight: 12127.5 lb / 5500.0 kg
Max. speed: 626 kts / 1160 km/h
Landing speed: 148 kts / 274 km/h
Cruising speed: 394 kts / 730 km/h
Initial climb rate: 13779.53 ft/min / 70.0 m/s
Service ceiling: 44291 ft / 13500 m
Wing loading: 88.77 lb/sq.ft / 433.0 kg/sq.m
Range: 572 nm / 1060 km
Crew: 1
Armament: 2800kg ext 5pods