Why kites dont fly




















Bowed kites are those kites that have a dihedral angle. Because they are bowed they do not need tails. Parafoils are special sort of kites which are shaped very much like an aeroplane wing. They rely on the wind to hold them open as they generally have no spars. These kites normally do not need tails. Box kites are also called cellular kites. They have many surfaces, some of which normally lie vertically, while others lie horizontally.

Because of these surfaces, which act in a similar way to the dihedral angle on bowed kites, this sort of kite does not need a tail. They are normally a strong wind kite. Compound box kites are basically box kites with wings attached to them. They fly in lighter winds than normal box kites and can pull much harder because of the increased surface area being presented to the wind.

Delta wings are the best kites for very light winds. They tend to be pushed up and forward so that they lie nearly parallel to the wind. Because of this they have a very low angle of attack. Consequently they don't pull very hard at all. The sail forms a billow, and this, combined with a keel in place of a bridle, allows deltas to fly without a tail. This kite was named the delta because it looked like the letter "delta" in the Greek alphabet, which corresponds to our letter "d". The sled is similar to the parafoil in that it relies on the wind to hold it open.

It has several spines running the length of the kite, but no cross-spars. Sleds often have vents cut in the sail, near the bottom of the kite, instead of using a tail. They pull very hard and fly with a high angle of attack. Never fly a kite in a thunderstorm or while it is raining. The kite, or the flying line, might be hit by lightning. Never fly a kite with wire, or anything that could conduct electricity through the flying line to you, and don't use a wet flying line.

Never fly a kite near power lines, antennae or transmission towers. If your kite does get caught in power lines, do not attempt to retrieve it. Call the S. Never fly a kite above crowds, near public streets, highways, airports or helicopter pads, or other areas where your kite might be a hazard to other people.

In Australia kites are legally allowed to be flown up to three hundred feet above ground level, and may not be flown within five kilometers of an airport. Don't climb trees, buildings or power poles to retrieve your kite.

Ask for help from an adult, or make another kite. If your kite pulls strongly, wear gloves while flying it, to prevent the line cutting into your hands or causing a friction burn.

Don't use monofilament fishing line to fly your kite. It is hard to see, and it can cut into skin very easily when it is pulled taut by a flying kite. Allow lots of room to fly a kite. Always choose a site with plenty of space and no trees or power lines. Try to keep out of the "wind shadow" of trees or buildings.

If you are standing with your back to the wind, and there is a building behind you, it is important to know that any obstacle to the flow of the wind will create turbulence.

If the building is ten metres high then the air will still be turbulent up to thirty metres downwind of the base of the building. Some people like to fly kites from hilltops, but it is normally better lower down the slope that faces into the wind. This is because of the turbulence caused by the wind shadow of the hill. Try to choose a location with even ground. If you are watching your kite you can't see your feet, and you may stumble and fall if the ground is rough.

Keep an eye out for park benches, rubbish bins, goal posts, and any other obstructions you might run into while launching your kite. Have someone hold the kite up, facing into the wind while you wind out about thirty metres of line. You should be facing your kite, and the wind should be blowing from behind you. To find smooth wind, you must find a large flat area without obstructions — like trees, shrubbery, a hill, or a building — because when the wind reaches an obstruction, it flows over and around it, and this can cause turbulence as far downwind by as much as seven times the height of the obstruction.

Turbulence can result in a bumpy flight and decrease the wind speed; these problems could make it difficult to launch and fly your kite. If you are successful in launching your kite, you may be able to fly your kite high enough to avoid turbulence. It is possible to fly in turbulent wind, but the more open area you have, the smoother the wind will be, which is why ocean beaches or large lakes are so popular for kite flying.

Some places and conditions are not good or not even safe for kiteflying. There are many different kinds of kites. Kitefliers carry different types of kites for different winds and the different experiences each type offers. Experienced kite fliers have several kites and know which ones are better suited for different kinds of flying experiences and winds of different forces. Being comfortable is also important; here are a few things that you might find useful:.

Successful flying is easily accomplished if you follow these simple procedures:. Hold your kite up by the bridle point and let the line out. If there is sufficient wind, your kite will go right up. Let the kite fly away from you a little, then pull in on the line as the kite points up so it will climb. Repeat this until your kite gains the altitude necessary for steady wind.

Have a helper take the kite 50 feet downwind and hold it up. On command, the helper releases the kite, and the flier pulls the line hand-over-hand while the kite gains altitude. Practice this long-launch technique. Prop the kite up against a bush, post, or wall. Reel out enough line for altitude and simply pull the kite aloft. If it comes down head first or spins, there might be too much wind. Different kites fly in different wind ranges. BRIDLES: If your kite has an adjustable bridle, move it higher nearer the top in higher winds and lower toward the tail in lower winds.

Use lightweight materials. Lots of tails can look great. Fliers should walk towards each other, and the tangle will slide right down the line where you can unwrap it.

Check all connectors, unsnarl and straighten lines and tails. Electricity in clouds is attracted to damp kite lines and you could get hurt. Stay Away From Power Lines. Use the correct flying line Too heavy a line will weigh a kite down Too light a line and your line might snap and you may lose your kite Do not use mono-filament fishing line. It is hard to see and can be dangerous If flying lines cross, one will cut or nick the other PROBLEM SOLVING: If your kite spins and the wind is not too strong: Too short a tail can cause your kite to spin Check to see if the struts are correctly fitted or that both sides of the kites are equal On delta kites, make sure the leading edge struts are pushed all the way down into the wing tips.

Your tow point where the line attaches may be too forward Tape a piece of tail to the opposite side. Check out Prism's Freestyle Pilot video series for all the tricks from beginner to advanced!



0コメント

  • 1000 / 1000