Skydiving

Skydiving is a sport in which a person jumps from an aircraft, then free falls for some distance before deploying a parachute to slow their descent back to the ground. Skydiving is also used as a military tactic. It can be a means of quietly getting troops zones.

1,522 Questions
Extreme Sports
Skydiving

How fast do you tracel in freefall during tandem skydiving?

The velocity of a skydiver is largely governed by weightand drag. Obviously both can vary quite a bit. The typical skydiver flying in "belly" or prone position reaches the terminal velocity of about 110mph to 150mph (typically 130mph) after about 1000ft of freefall. This equates to a rate of approximately 1000ft for every 5.5 seconds. Tandems would fall at about twice that velocity if it wasn't for a drogue chute that is deployed by the tandem instructor shortly after leaving the aircraft to increase the drag on the tandem pair. This is needed because there is about twice the weight and essentially the same drag because the student is laying directly below the instructor. Similarly to the situation with an individual skydiver, tandem freefall rates can vary quite a bit. Many camera fliers wear small wings under their arms to allow them a higher range of adjustability in their fall rates.

The rate of change of velocity "g" caused by earths gravity is a constant in a vacuum. But we have variables such as air resistance which may change due to change in air density and the surface area of an object falling through the air.

Skydivers utilize that principle through adjustments in body position, using baggy jumpsuits to increase drag, streamline jumpsuits to reduce it, wings as mentioned previously and lead shot to increase weight.

At the start of the freefall, gravity "g" is the overwhelming force as the low velocity produces minimal drag but as the velocity increases due to the acceleration g then so does drag and the rate of acceleration reduces to the point where it reaches zero. This is the so called terminal velocity and is the point where the force g and the drag are equal and opposite forces. Now the fun begins.

Because forces on a skydiver are in constant flux due to intentional or unintentional changes in body attitude (position) and changes in air density due to air temperature changes and altitude, the net force on a skydiver may approximate zero but there is always some out of balance force somewhere. Even gravity changes as we approach the ground, but by an infinitesimal amount. Even mass m is affected by v velocity. Unless you were skydiving at a reasonable factor of the speed of light, this may be ignored.

Ever tried to balance a knife on its edge ?

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Skydiving

What are the forces involved in skydiving?

The forces involved in the freefall part of a skydive are Gravity and air resistance (drag). As the parachute is deployed, drag opens the canopy and the skydiver's weight provides tension on the lines. When the canopy has opened, the skydiver's weight is supported lift provided by the canopy. The canopy also generates thrust and drag, like an aeroplane's wing.

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Skydiving

How tall is the freefall at butlins minehead?

16 Metres

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Mountain and Rock Climbing
Extreme Sports
Skydiving

Where in India skydiving is done?

There are three places to skydive in India. There is the Parachuting Association of India in Pant Nagar, the Indian Parachuting Federation in New Delhi, and Indradahanush agni aero sports in Bangalore.

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Skydiving
Outdoor Activities

Where is the best skydiving place to go to in Texas?

Texas Skydiving- 1055 Private Rd. 7002 Lexington, TX

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Skydiving

How long do skydivers fall before opening the paraCHUTE?

This greatly depends on the exit height as well as the opening height. The first depends on cloud cover, plane and pilot. The latter depends on the experience and comfort level of the diver. A standard dive would be from 13,500 ft. to about 4,500 feet and would take about one minute.

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Skydiving

What kind of forces work on a skydiver?

Gravity pulling the skydiver to the ground as well as wind resistance pushing up on the skydiver.

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Clothing
Extreme Sports
Skydiving

What clothing do you wear parachuting?

Apart from a skydiving rig containing two parachutes, most skydivers wear a jumpsuit, a helmet and an altimeter of some kind. The jumpsuit keeps you warm at the high altitudes and protects your clothing. Many skydivers do not wear a jumpsuit when the weather is warm. The helmet protects your head in case you hit the aircraft on exit or other jumpers in freefall, or if you land in obstacles like trees. In the UK, all skydivers are required to wear a helmet, but in the USA it is the jumper's choice. A barometric or electronic altimeter worn on the wrist or chest, or an audible altimeter in the helmet lets the skydiver know how high they are and when to deploy their canopy.

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Air Travel
Inventions
Skydiving
Parachutes

Why was the parachute invented?

so people wouldn't die when they jump out of airplanes

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Skydiving

Where can you skydive if you are only 16?

yes

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Philadelphia
Extreme Sports
Skydiving

Are there any indoor skydiving places in Philadelphia PA?

No.

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Skydiving

What is a sky diving mask?

There is no such thing as a 'skydiving mask'. There is however a skydiving helmet. These are typically split into the categories of:

  • Open face
  • Full face
  • Leather helmet
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Skydiving

How old do you have to be to jump out of a plane?

13 years old

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Skydiving

How old do you have to be to indoor skydive?

That varies from wind tunnel to wind tunnel. Personally, I have seen kids as young as 3 in tunnels.

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Cars & Vehicles
Skydiving

How does a parachute fly with Aerodynamics?

A conventional round parachute works by slowing rate of descent. The resistance of the air against the bell of the parachute provides an opposing force to the gravity pulling down. Such parachutes have a small opening at the top to let the air out slowly and provide stability. Without the hole the parachute tends to swing from side to side like a pendulum allowing air to escape from the upper edge which makes for a very unhappy person beneath. There is limited control on such a parachute with lines that can open small vents or collapse portions of the parachute.

The wing parachute operates completely differently. Forward motion allows air into slots at the front, blowing up the chute into a wing shape. Normal aerodynamic principles apply where air flows over the curved top surface faster than under the wing reducing pressure above the wing and providing lift. Such parachutes can climb as well as descend. Control lines provide equivalence with normal airplane wing controls such as aerilons but they work by flexing the wing as a bird, rather than moving small sections as on a fixed wing. By adjusting the lift ratios on different edges of the wing, turning, stalling, diving etc are achieved.

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Animated and Children's Movies
Elephants
Disney
Extreme Sports
Skydiving

How did they film the elephant skydiving in operation dumbo drop?

See the link below.

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Skydiving

Where can you skydive at 16?

One of the few places in the USA is Start Skydiving, formerly in Lebanon, Ohio and now moving to Middletown. You will need notarized permission to both parents. One thing, though. You cannot do a tandem skydive, as that age limit is 18. But you can learn how to skydive at Start by taking the Accelerated Freefell (AFF) course at 16. It's about six hours in the classrom, followed by your jump. Instead of being attached to an instructor (like you would on a tandem) you wear a rig yourself. Two intructors jump with you, but you're trained to fly yourself, deal with any malfunctions and how to fly and land your canopy.

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Extreme Sports
Skydiving

What age do you have to be to skydive?

16 years old, I'd say but only with parent consent.

--- confirmed, 16 requires parental consent. 18 otherwise.

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Skydiving
Height

What is a normal height to skydive from?

Skydivers like to go at between 14,000 and 15,000 Altitude Above Ground Level, so they get more time to do tricks, practice relative work or just enjoy the feeling of dropping like a rock at 120mph for as long as possible.

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Extreme Sports
Skydiving

How many people die each year skydiving?

There were 16 skydiving related deaths in 2009 with close to 3 million jumps made.

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Inventions
Physics
Skydiving

Why does a large parachute fall slower than a small parachute?

Because the larger parchute has a larger area thus making more air resistance, wich makes the larger parachute go slower than the smaller parachute. Hope This Helps :)

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Physics
Extreme Sports
Skydiving

How long do you free fall when parachuting?

The length of a free fall when skydiving varies depending on a few different factors. Body size, shape, and the initial height of exit from the airplane come into play when determining free fall time. The average free fall on a tandem is about 60 seconds.

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Extreme Sports
Skydiving

What are skydiving goggles made out of?

Plastic. The sort of plastic that, say, an mp3 player is packaged in but wrapped into goggle shape. Lightweight, flexible, and very strong.

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Skydiving

Can you you skydive at 40000 feet?

No, since the air is too thin - there is not enough oxygen to breathe.

It can be done, but you have to wear an oxygen mask. The military does HALO (high altitude, low opening) jumps from 35,000+.

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Extreme Sports
Skydiving

How much does it cost to make an indoor skydiving facility?

Millions.

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