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Leading edge inflatable kite
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A leading edge inflatable kite or LEI is a single skin kite with inflatable bladders providing structure. It is useful as a power or traction kite. These kites are flown using 2, 4 or 5 control lines and a bar. (See also: kite control systems) A LEI is a great kite for water use because the inflated bladders cause it to float on the water surface. A LEI can sit on the water for an indefinite time and still be relaunched because unlike a double skin kite there are no chambers that can fill with water.
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A leading edge inflatable kite or LEI is a single skin kite with inflatable bladders providing structure. It is useful as a power or traction kite. These kites are flown using 2, 4 or 5 control lines and a bar. (See also: kite control systems) A LEI is a great kite for water use because the inflated bladders cause it to float on the water surface. A LEI can sit on the water for an indefinite time and still be relaunched because unlike a double skin kite there are no chambers that can fill with water. Generally used for kitesurfing, leading edge inflatable kites come in many different sizes from approximately 5-18 square metres.
Based on their design Leading Edge Inflatable kites can be broken down into three categories: C-
kite, Hybrid kite, and Bow kite.
C Kites are the oldest style of LEI used to kiteboard. They come with four lines, and have the option of an additional 5th line for safety. The main difference between C kites and other LEI styles is that they do not have any lines that support the leading edge of the kite (called bridles). The lines on a C- kite attach to the four corners of the kite.
Hybrid kites are a cross between C- kites and Bow kites. Like bow kites, they incorporate bridles to support their leading edge. These bridles support kite and enable designers to experiment with different arc profiles - some Hybrids can have a very flat arc, while some can look similar to a C- kite. Individual characteristics of the Hybrid kites vary depending on how similar they represent one of the other two kite styles. The defining difference between a Hybrid and Bow kite is the shape of the trailing edge. The trailing edge on a Hybrid kite is convex, whereas that of a Bow is concave.
All of the Bow kites advantages are because of it's concave trailing edge. This design feature changes the shape of the kite's trailing edge as it flies, requiring that the leading edge flatten to match, resulting in a much flatter looking kite. The bridles on the kite restrict the leading edge and hold it in line with the rest of the kite. In addition, the concave trailing edge enables the kite to be sheeted out further than a traditional C- kite, which is why a Bow kite can be nearly 100% depowered.
The inflatable and Bow kite designs were invented by Dominique and Bruno Legaignoux.
See also
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