Sikorsky UH-60 Blackhawk external tanksSikorsky UH 60 Blackhawk with external fuel tanks helicopter model. The Sikorsky UH 60 Black Hawk helicopter is the U. S. Armys primary medium lift utility transport and air assault aircraft. The UH 60 Black Hawk is a twin engined medium lift utility helicopter. It is equipped with a single 4 bladed rotor and a single 4 bladed tail rotor. The basic crew compliment for the UH 60A is three; pilot, co pilot, and crewchief. The titanium cored rotor blades