1. 1 Aviation Propulsion Systems Department , Unmanned technologies Center, Mechanics & thermal Section, Łukasiewicz research Network – Institute of Aviation , Al. Krakowska 110/114 , Warsaw , Poland
2. 2 Aviation Propulsion Systems Department , Unmanned technologies Center, Hybrid Drives Section, Łukasiewicz research Network – Institute of Aviation , Al. Krakowska 110/114 , Warsaw , Poland