Yugoslav designer have made several patent in the sphere of the jet propulsion before the WW2 and there is also few attempt in Yugoslav Kingdom to made prototype of the jet engine. To regret Yugoslav officials did not have faith into this project and they are refused without serious consideration. So first attempt in building of the jet planes was made after the WW2 and they are based on the foreigner propulsion. On the images bellow you could see some of the post war development design sucjh as Zolja, 452M, Matica as well first Yugoslav jet plane 451M.

Srecko Bradic