The turbine engine has no cylinders or pistons. Using kerosene as fuel, it operates by compressing air, igniting it, and using the hot exhaust gases to drive the turbine wheel. In turboprops, this power is used to turn the propeller. In jets, the gases are forced out the back of the engine and, in combination with the internal front fan, provide propulsion. This engine type allows for much greater speeds, longer ranges and higher altitudes.