The objective of the study is that, the presentation of the capabilities of the modern unmanned aircraft combat vehicles (UCAV), in the modern warfare. After a historical brief, a detailed analysis about the supply and propulsion system for electrical UAV’s take place. Afterwards, emphasis is given to trajectory calculation methods for unguided missiles and projectiles in order to used from the aerial vehicle. The theoretical study leads to a parametrical study. The target is that, the development of a model which can accomplish all the missions in an army unit or lower (company-platoon-squad). Finally, a comparison with other similar systems made, in order to choose the appropriate one, depending the occasion.