Ikarus S-49

Ikarus S-49
Role	fighter-bomber
Manufacturer	Ikarus Aircraft factory
Designed by	Kosta Sivcev, Svetozar Popovic, Slobodan Zrnic
Introduced	1946
Retired	1961
Primary user	Yugoslav Air Force
Number built	158

The Ikarus S-49 was one of the first fighter aircraft produced in Yugoslavia after World War II by the Ikarus Aircraft factory. It was a conventional, low-wing cantilever monoplane with retractable tailwheel undercarriage and bore a strong resemblance to the Yakovlev Yak-9, although it was in fact a fresh design.

Development

After the Resolution of Informbiro in 1948 and breakup with Soviet Union, Yugoslavia was forced to rely on its domestic military industry. The same constructors that built the Rogozarski IK-3 before the war, engineers Kosta Sivcev, Slobodan Zrnic and Svetozar Popovic, used existing technical documentation of IK-3 to construct a new fighter aircraft, the Ikarus S-49. The first prototype of the S-49A flew in the June of 1949. The first operational aircraft were delivered to combat units at the beginning of 1950.
The S-49A was of mixed construction, with Soviet built VK-105 engines which were no longer available after 1948. Therefore, it was decided to produce a new version of aircraft powered by the similar French Hispano-Suiza 12Z-17 engine. Because of the bigger and heavier engine, the new aircraft had to be of all metal construction with a much longer nose. While the aircraft was mainly built by Ikarus, the wings and tail were built by the SOKO factory in Mostar ^[1]. The armament remained the same as with Ikarus S-49A and it consisted of one 20 mm MG-151 German cannon and two 12.7 mm Colt Browning machineguns. In addition, under wing racks for two 50 kg bombs or four 127 mm HVAR missiles were added.
At the beginning of 1952, the new fighter aircraft Ikarus S-49C was introduced in to the units of Yugoslav Air Force. About 130 S-49C were produced during the fifties and they remained in service until 1961 ^[1].

Variants

• S-49A - mixed construction and Klimov M-105 engine (45 built)
• S-49C - all-metal construction and Hispano-Suiza 12Z engine (113 built)

Operators

•  Yugoslavia
  • Yugoslav Air Force

Specifications (Ikarus S-49C)

Data from The Complete Book of Fighters ^[1]

General characteristics

• Crew: one pilot
• Length: 9.06 m (29 ft 8¾in)
• Wingspan: 10.30 m (33 ft 9½ in)
• Height: 2.90 m (9 ft 6 in)
• Wing area: 16.65 m² (179 ft²)
• Empty weight: 2,818 kg ^[2] (6,200 lb)
• Max takeoff weight: 3,568 kg^[2] (7,850 lb)
• Powerplant: 1× Hispano-Suiza 12Z-17 water cooled V-12, 1,104 kW (1,500 hp)

Performance

• Maximum speed: 628 km/h (339 knots, 390 mph) at 1,525 m (5,000 ft)
• Range: 690 km (373 nm, 429 mi)
• Service ceiling: 10,000 m (33,000 ft)
• Climb to 6,000 m (19,700 ft): 6 min 54 sec ^[3]

Armament

• 1 × 20 mm MG-151/20 cannon
• 2 × .50 Colt Browning M2 machine guns with 650 rounds per gun
• 2 × 50 kg (110 lb) bombs or 4 × 5 in HVAR missiles