Blimps use the same steering methods today that they used 100 years ago. The airship is steered left or right using foot pedals attached to wires that move vertical rudders mounted on the tail of the envelope. The wheels on either side of the pilot's seat control horizontal elevators in the tail to guide the airship up or down. Blimps have been used for many purposes since they were first created in 1856. Early on, they were used mostly by the military, to spy on enemy positions.
Blimps can stay aloft for long periods of time at little cost.
Fifteen people follow the blimp on the ground as it travels. In time, airships became passenger carriers. The German zeppelins were the most famous passenger airships. People thought they were too dangerous. Today, blimps are popular for use in publicity and advertising.