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Ikarus S-451M Mlazni
Utilising the basic airframe of the S-451, Ikarus came up with a new design to develop the first jet aircraft designed and built in Yugoslavia, the Ikarus S-451M (Mlazni or “Jet”). The Ikarus 451M was designed by Major Dragoljub Beslin. Basically they installed a conventional cockpit and added two small Turbomeca Palas 056 turbojet engines which produced a maximum speed of 453 km/h.
Ikarus S-451M at the Yugoslav Aeronautical Testing Centre in the early 1950’s
Captain Tugomir Prebeg made ​​the first flight of this aircraft, in the morning of 25 October 1952, powered by two Turbomeca Palas jets. A single copy was built 1959.
With plans to develop a military version, a 20mm Hispano-Suiza 404A cannon and six underwing rockets was fitted to the S-451M for weapons testing.
Ikarus S-451M passes a lineup of Yugoslav Air Force Yak fighters at Batajnica Air Base – May 1953
Flight tests of the prototype were conducted at the Yugoslav Aeronautical Testing Centre until 1959 when the aircraft was handed over to the Belgrade Aeronautical Museum for permanent display.



Engines: 2 × Turbomeca Palas 056A
Length: 7.45 m (24 ft 5 in).
Wingspan: 6.78 m (22 ft 3 in).
Height: 2.32 m (7 ft 7 in).
Wing area: 8.00 m² (86 ft ²)
Empty weight: 897 kg (1977 lb)
Gross weight: 1350 kg (2980 lbs)
Range: 300 km (190 miles)
Ceiling: 8500 m (27,900 ft)

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