Progeny of the Air Force Technical Institute: The Type 451M powered by two Turbomeca Palas engines and the first Yugoslav jet aircraft of indigenous design
Самолет Икарус 451M
Progeny of the Air Force Technical Institute: The S-451M Zolja with repositioned Palas engines, lengthened fuselage and revised tail.
Progeny of the Air Force Technical Institute: The S-451MM Queen Bee Marbore-powered tandem-seat trainer
Progeny of the Air Force Technical Institute: The single-seat T-451MM light close air support aircraft