Ship's propulsion systems

Kako bi se brod doveo u stanje gibanja potrebno je proizvesti silu koja će svladati silu otpora. Ova se sila dobiva mehanizmima koji se općenito nazivaju propulzorima. Vijak je na suvremenim brodovima najrašireniji tip brodskog propulzora i gotovo jedino sredstvo poriva. Možemo ga predočiti kao vijak koji na osovini okreće brodski stroj i tako okrećući se u vodi kao matici, snagu brodskog stroja pretvara u gibanje broda. U ovom radu je dat pregled i opis izvedbi brodskih vijaka te njihova primjena na pojedinim tipovima brodova. Cilj ovog rada je ukazati na važnu ulogu u odabiru određenog tipa vijaka za određeni brod, kao i na njihove prednosti i nedostatke.In order to bring the vessel into motion, it is necessary to produce a force that will overcome the resistance force . This required force is obtained from mechanisms commonly referred to as propulsors. The ship proppeler on modern vessels is the most widespread type of vessel propulson and almost the only means of thrust. It can be presented as a screw that rotates by the vessels machine on its axle and power of the vessel engine convert in movement. This paper describes the types of vessel screws and their application on certain types of vessels. The goal of this paper is to point out the importance of choosing a specific screw for a particular vessel, as well as their advantages and disadvantages