Flight testing was carried out from mid 1953, with experience from the programme providing a basis for the production of the Soko Galeb.

It was a single seat jet aircraft with swept wings with a span of 5,20m only and 5,95mlength. After the T-451 it was the second jet aircraft to be developed in Yugoslavia. The first of two prototypes had its maiden flight on 24th July 1953. The 452M was seen as apredesign to a ground attack, which was planned to be used as high speed recconnaissance aircraft, too. The small dimensions were the results of military and eccomical demands.
The full metal aircraft had a swept twin-boom tail attached to the center wing. The tailplane was further attached to the fuselage with a fin. The two Turboméca Palas engines with 1,6kN thrust each were installed one above the other in the rear fuselage. The intakes of the lower engine were positioned in the wing roots, those of the upper engine behind the cockpit.


General characteristics
Crew: One pilot
Length: 5.97 m (19 ft 7 in)
Wingspan: 5.25 m (17 ft 2 in)
Height: 1.77 m (5 ft 9 in)
Gross weight: 1,100 kg (2,420 lb)
Powerplant: 2 × Turboméca Palas 056A, 1.5 kN (330 lbf) thrust each
Performance
Maximum speed: 780 km/h (466 mph)
Endurance: 1 hours 15 min
