Sunday, July 26, 2009

Learn About Skydiving : Something For Everyone

By Michael Hastings

What to expect when skydiving is the topic for this part of our skydiving guide.

In skydiving, a jumper exits an airplane at heights of 10,000-18,000 feet (3,050-5,500 m) and moves through the air - downwards and horizontally - before opening a parachute.

At the point of exiting the plane, the force of gravity is far stronger than that of air resistance, causing a rapidly accelerating descent. After a few seconds, and a few hundred or a thousand feet, the two forces become equal and the jumper reaches terminal velocity. This speed varies according to the person's body and posture, but will be between 120-180 mph (193-290 kph).

Your exact speed will be dependent on the shape and area taken up by your body as you fall. You'll achieve a higher speed of free fall if you're pointed nose down with your arms and legs together than the common position of arms out, face and belly down.

Once the parachute cord is pulled, the main canopy is released and fills with air. This increases air resistance and the fall immediately begins to decelerate because of the sudden increase in air resistance. If the chute is opened at a safe height, the jumper will land at roughly 10 mph.

Hazards of skydiving include malfunctioning equipment, mid-air collisions and turbulence. Only about 1 in every 100,000 jumps leads to a fatality. But while the odds of something going wrong are relatively low, the consequences can be huge, so jumpers must always be alert and safety conscious.

Depending on the type of skydiving you want to do - Tandem, Static Line, AFF (accelerated free fall) - you may spend anywhere from an hour to eight hours training, which will cover: some basic physics about how the body and parachute work together; how to use a lot of complex gear safely; how to jump from the plane; the different falling / flying techniques; how to land safely.

Skydiving isn't cheap. It can cost between $50 and $200 for a jump, depending on the type of skydive and the status, facilities and location of the skydiving school. Equipment is not always provided by the school and skydivers may need factor in the expense of buying or hiring gear. - 16887

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