Sima Milutinović, was a Yugoslav mechanical engineer and a professor at the Faculty of Mechanical Engineering, at the University of Belgrade, the most prolific Yugoslav aircraft constructor.
SIM-II a sports and training aircraft (1930).
A Yugoslav training float-plane Rogožarski PVT-H (1934).
The Rogožarski SIM-X was a Yugoslav single-engine sports and tourist plane also used for basic training of military pilots designed in 1936, with two crew members. It was designed and built at the Rog
Sima Milutinović
…Rogožarski PVT-H – advanced trainer seaplane 1936,. Rogožarski SIM-X – single engine two-seater trainer aircraft for initial training and piloting, 1936 Rogožarski SI-Gyp – SIM-X modifications, with Gypsy Major engine…