An open parachute resembles a large umbrella, when a parachute falls to the ground, the air beneath it pushes it upwards. This push slows the fall, the part of the parachute that can be compared to the fabric of an umbrella, hang long strings. These ropes are tied to straps that surround the body of the parachutist.
The parachute is folded forming a small package, tied to the back of the parachutist, when the parachutist jumps to the void, usually from an airplane, pulls a rope called opening.
This is how the parachute opens, sometimes the opening rope is fastened with a hook on another rope that runs along the inside of the plane. In this case, the parachutist automatically pulls the opening rope when jumping. The force of the air opens the parachute and gives it its umbrella shape while slowing the fall.
Even so, the paratrooper reaches the ground at a speed of 24 kilometers per hour, is something like jumping from a car in motion.
Sometimes they tie parachutes to the tail of certain large and fast planes. The parachutes swell with air behind the airplanes, in this way they give more slowness to their landing.
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