What is sky jumping?

Answer 1

(m)

Skyjump® is a whole new way of falling off things. Jumpers wear a "flying suit" and full body harness. They are then clipped to the jump cable by professional Jumpmasters and simply "step off"! The cable drum rotates as the cable feeds out, causing air resistance against fan blades on the end of the drum. This means Jumpers are effectively riding on a cushion of air. Jumpers fall very quickly until near the ground then decelerate to a safe landing speed. Ground rush is awesome.

Answer 2

BASE jumping grew out of skydiving. BASE jumps are generally made from much lower altitudes than skydives, and a BASE jump takes place in close proximity to the cliff or tower which provides the jump platform. The BASE jumper also has a lower airspeed than a skydiver throughout the jump, because a BASE jump starts with zero airspeed, and due to the limited altitude, a BASE jumper very seldom approaches the terminal velocity airspeed of a skydiver. All three factors have significant implications.

Skydivers use the air flow to stabilise their position, allowing the parachute to deploy cleanly. BASE jumpers, falling at lower speeds, have less aerodynamic control, and may tumble. The attitude of the body at the moment of jumping determines the stability of flight in the first few seconds, before sufficient airspeed has built up to enable aerodynamic stability. On low BASE jumps, parachute deployment takes place during this early phase of flight, so if a poor "exit" leads into a tumble, the jumper may not be able to correct this before the opening. If the parachute is deployed while the jumper is tumbling, there is a high risk of entanglement or malfunction. The jumper may also not be facing the right direction. Such an off-heading opening is not a problem in skydiving, but off-heading opening that results in object strike has caused serious injuries and deaths in BASE jumping.

An experienced skydiver is recommended to deploy their parachute no lower than 2,000 feet (600 m). At that time, if they have already been in free-fall for at least 1,000 feet (300 m), the jumper is traveling 120 miles per hour (54 m/s), and is 11 seconds from the ground. Most BASE jumps are made from less than 2,000 feet (610 m). For example, a BASE jump from a 500 foot (150 m) object is about 5.6 seconds from the ground if the jumper remains in freefall. On such a jump, the parachute must open at about half the airspeed of the skydiver, and more quickly (ie. in a shorter distance fallen). Standard skydiving parachute systems are not designed for this situation, so BASE jumpers use specially designed harnesses and parachute containers, with extra large pilot chutes, and jump with only one parachute—since there would be no time to use a reserve parachute.

Standard skydiving equipment can only be used on high BASE jumps. If modified, by removing the bag and slider, stowing the lines in a tail pocket, and fitting a large pilot chute, standard skydiving gear can be used for lower BASE jumps, but is then prone to kinds of malfunction which are rare in normal skydiving (such as "line-overs" and broken lines).

Another risk is that most BASE jumping venues have very small areas in which to land. A beginner skydiver, after parachute deployment, may have 3 minutes or more of a parachute ride to the ground. A BASE jump from 500 feet (152 m) will have a parachute ride of about 10 to 15 seconds.

One way to make a parachute open very quickly is to use a static line or direct bag. These devices form an attachment between the parachute and the jump platform, which stretches out the parachute and suspension lines as the jumper falls, before separating and allowing the parachute to inflate. This method enables the very lowest jumps (below 200 ft) to be made, although most BASE jumpers are more motivated to make higher jumps involving free fall.

On higher BASE jumps, those which allow a free fall of five seconds or more, it may be necessary to use freefall tracking technique to move away from the jump object (especially on cliff jumps, where there might be underhangs). Jump platforms providing an overhang, such as arch bridges or naturally overhung cliffs, are more forgiving in this respect and so are more suitable for beginner BASE jumpers.

BASE jumping is a sport involving the use of a parachute to jump from fixed objects. "BASE" is an acronym that stands for the four categories of fixed objects from which one can jump:

Building
Antenna (an uninhabited tower such as an aerial mast)
Span (a bridge, arch or dome)
Earth (a cliff or other natural formation)

Answer 3

It's when you jump out of a plane in the air
You carry a backpack carrying a parachute and you pull a string to bring out the parachute and it will slow you down as you fall to the surface(ground) parachutes will help you make a safe landing.